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A Single-wavelength NIR-triggered Polymer for in Situ Generation of Peroxynitrite (ONOO − ) to Enhance Phototherapeutic Efficacy Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2021-01-15 Xiang Zhang, Da-Wei Jiang, Guo-Liang Yang, Yu-Cheng Zhu, Jia Tian, Hong-Liang Cao, Yun Gao, Wei-An Zhang
Phototherapies including photodynamic therapy (PDT) and photothermal therapy (PTT) are the most promising and non-invasive cancer treatments. However, the efficacy of mono-therapy of PDT or PTT is often limited by the phototherapeutic defects such as low light penetration depth of photosensitizers and insufficiency of photothermal agents. Peroxynitrite (ONOO−) has been proved to be an efficient oxidizing
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Nanocrystallization-locked Network of Poly(styrene- b -isobutylene- b -styrene)- g -Polytetrahydrofuran Block Graft Copolymer Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2021-01-08 Hang-Tian Zhang, Zhi-Tao Wei, Fang Zhang, Tian Yang, Yi-Xian Wu
Poly(styrene-b-isobutylene-b-styrene) triblock copolymer (SIBS), a kind of thermoplastic elastomer with biocompatibility and biostability containing fully saturated soft segments, could be synthesized via living cationic copolymerization. A novel poly[(styrene-co-methylstyrene)-b-isobutylene-b-(styrene-co-methylstyrene)]-g-polytetrahydrofuran (M-SIBS-g-PTHF) block graft copolymer was prepared to increase
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Comparison of the Structural Evolution of β Polypropylene during the Sequential and Simultaneous Biaxial Stretching Process Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2021-01-06 Dao-Xin Zhang, Lei Ding, Feng Yang, Fang Lan, Ya Cao, Ming Xiang
In this work, the lamellar structural evolution and microvoids variations of β polypropylene (β-PP) during the processing of two different stretching methods, sequential biaxial stretching and simultaneous biaxial stretching, were investigated in detail. It was found that different stretching methods led to significantly different lamellae deformation modes, and the microporous membranes obtained from
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Benzothiadiazole-based Conjugated Polymers for Organic Solar Cells Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2021-01-05 Chao Wang, Feng Liu, Qiao-Mei Chen, Cheng-Yi Xiao, Yong-Gang Wu, Wei-Wei Li
Benzothiadiazole (BT) is an electron-deficient unit with fused aromatic core, which can be used to construct conjugated polymers for application in organic solar cells (OSCs). In the past twenty years, huge numbers of conjugated polymers based on BT unit have been developed, focusing on the backbone engineering (such as by using different copolymerized building blocks), side chain engineering (such
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Barium Titanate-reinforced Acrylonitrile-Butadiene Rubber: Synergy Effect of Carbon-based Secondary Filler Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2021-01-05 Wannarat Chueangchayaphan, Piyawadee Luangchuang, Narong Chueangchayaphan, Muhammad Azwadi Sulaiman, Yeampon Nakaramontri
Acrylonitrile rubber (NBR) composites filled with barium titanate (BT) were prepared using an internal mixer and a two-roll mill. Also, a secondary filler, namely carbon nanotubes (CNT), was added in order to find a potential synergistic blend ratio of BT and CNT. The cure characteristics, tensile and dielectric properties (dielectric constant and dielectric loss) of the composites were determined
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A Triple Crosslinking Design toward Epoxy Vitrimers and Carbon Fiber Composites of High Performance and Multi-shape Memory Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2021-01-05 Hao Wang, Han-Chao Liu, Yao Zhang, Hu Xu, Bi-Qiang Jin, Zhen-Xing Cao, Hai-Tao Wu, Guang-Su Huang, Jin-Rong Wu
It remains a challenge to use a simple approach to fabricate a multi-shape memory material with high mechanical performances. Here, we report a triple crosslinking design to construct a multi-shape memory epoxy vitrimer (MSMEV), which exhibits high mechanical properties, multi-shape memory property and malleability. The triple crosslinking network is formed by reacting diglycidyl ether of bisphenol
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Challenges and Recent Developments of Photoflow-Reversible Deactivation Radical Polymerization (RDRP) Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2021-01-05 Zhuo-Ran Zhong, Yi-Nan Chen, Yang Zhou, Mao Chen
Photo-controlled reversible-deactivation radical polymerization (photo-RDRP) has been investigated as a “green” and spatiotemporally controlling pathway for polymer synthesis. While the combination of photo-RDRP and flow chemistry has offered opportunities to increase light intensity and enable uniform light irradiation, problems associated with flow approaches still remain for photoflow-RDRP, which
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Isoselective Ring-opening Polymerization of Racemic Lactide Catalyzed by N -heterocyclic Olefin/(Thio)urea Organocatalysts Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2021-01-05 Zhen-Yu Wang, Guang-Qiang Xu, Li Zhou, Cheng-Dong Lv, Ru-Lin Yang, Bing-Zhe Dong, Qing-Gang Wang
The isoselective ring-opening polymerization of racemic lactide was achieved by combining N-heterocyclic olefin (NHO) with mono(thio)ureas or bis(thio)ureas as catalytic systems. The polymerization process shows high stereoselectivity, controllability and reactivity, delivering multi-block isotactic polylactides with high chain-end fidelity and narrow molecular weight distributions. The enhancement
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Synthesis of Well-defined Poly(tetrahydrofuran)- b -Poly( a -amino acid)s via Cationic Ring-opening Polymerization (ROP) of Tetrahydrofuran and Nucleophilic ROP of N -thiocarboxyanhydrides Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2021-01-05 Peng Zhou, Xuan-Geng Dai, Jie Kong, Jun Ling
The synthesis of block copolymers of poly(tetrahydrofuran)-b-poly(a-amino acid) (PTHF-b-PAA) is challenging since it is difficult to combine the two blocks produced via different/conflicting ring-opening polymerization (ROP) mechanisms. In this contribution, the cationic ROP of THF is catalyzed by rare-earth triflate [RE(OTf)3] and terminated by 2-(t-butyloxycarbonyl-amino) ethanol (BAE). After the
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Macroscopic Regulation of Hierarchical Nanostructures in Liquid-crystalline Block Copolymers towards Functional Materials Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-12-17 Feng Cai, Yu-Xuan Chen, Wen-Zhong Wang, Hai-Feng Yu
The great potential of liquid-crystalline block copolymers (LCBCs) containing photoresponsive mesogens toward novel applications in photonics and nanotechnology has been attracting increasing attention, due to the combination of the inherent property of microphase separation of block copolymers and the hierarchically-assembled structures of liquid-crystalline polymers (LCPs). The periodically ordered
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Tailoring Morphology of PVDF-HFP Membrane via One-step Reactive Vapor Induced Phase Separation for Efficient Oil-Water Separation Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-12-02 Peng Huo, Cheng-Tang Zhong, Xiao-Peng Xiong
Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) receives increasing attention in membrane separation field based on its advantages such as high mechanical strength, thermal and chemical stability. However, controlling the microporous structure is still challenging. In this work, we attempted to tailor the morphology of PVDF-HFP membrane via a one-step reactive vapor induced phase separation
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Reversible Mechanochemistry Enabled Autonomous Sustaining of Robustness of Polymers—An Example of Next Generation Self-healing Strategy Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-12-09 Ming-Xuan Li, Min-Zhi Rong, Ming-Qiu Zhang
Even under low external force, a few macromolecules of a polymer have to be much more highly stressed and fractured first due to the inherent heterogeneous microstructure. When the materials keep on working under loading, as is often the case, the minor damages would add up, endangering the safety of use. Here we show an innovative solution based on mechanochemically initiated reversible cascading
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Melting and Annealing Peak Temperatures of Poly(butylene succinate) on the Same Hoffman-Weeks Plot Parallel to T m = T c Line Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-12-11 Zhi-Ning Xie, Hai-Mu Ye, Tong Chen, Tian-Ze Zheng, Jun Xu, Bao-Hua Guo
The crystallization and melting behavior of polymers is of theoretical importance. In this work, poly(butylene succinate) (PBS) was selected as an example to study such behavior at low supercooling via introduction of the extended-chain crystal (ECC) of the same polymer as nucleating agent. The crystallization of PBS with its ECC as nucleating agent in a wide temperature range (90–127 °C) and the following
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Benzotriazole Based 2D-conjugated Polymer Donors for High Performance Polymer Solar Cells Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-15 Zhi-Guo Zhang, Yang Bai, Yongfang Li
To design high efficiency polymer solar cells (PSCs), it is of great importance to develop suitable polymer donors that work well with the low bandgap acceptors, providing complementary absorption, forming interpenetrating networks in the active layers and minimizing energy loss. Recently, we developed a series of two-dimension-conjugated polymers based on bithienylbenzodithiophene-alt-benzotriazole
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Foam/Film Alternating Multilayer Structure with High Toughness and Low Thermal Conductivity Prepared via Microlayer Coextrusion Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-30 Qi Luo, Hong-Ting Pu, Zhi-Hua Zhang, Xiong Zhang, Cheng-Long Yu
Multilayer membranes prepared via microlayer coextrusion have attracted wide attention due to their unique properties and broad applications. In present study, the foam/film alternating multilayer sheets based on ethylene-vinyl acetate copolymer (EVA) and high-density polyethylene are successfully prepared via microlayer coextrusion. The cells in the sheets are single-cell-array along the foamed EVA
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A Review on Graphene Oxide Two-dimensional Macromolecules: from Single Molecules to Macro-assembly Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-26 Wen-Zhang Fang, Li Peng, Ying-Jun Liu, Fang Wang, Zhen Xu, Chao Gao
Graphene oxide (GO), which consists of two-dimensional (2D) sp2 carbon hexagonal networks and oxygen-contained functional groups, has laid the foundation of mass production and applications of graphene materials. Made by chemical oxidation of graphite, GO is highly dispersible or even solubilized in water and polar organic solvents, which resolves the hard problem of graphene processing and opens a
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Tunable Lower Critical Solution Temperature of Poly(butyl acrylate) in Ionic Liquid Blends Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-26 Lie Chen, Jin Huang, Cong Zhao, Jia-Jia Zhou, Ming-Jie Liu
We describe the lower critical solution temperature (LCST)-type phase behavior of poly(butyl acrylate) (PBA) dissolved in hydrophobic 1-alkyl-3-methylimidazolium bis{(trifluoromethyl) sulfonyl}amide ionic liquids (ILs). The temperature-composition phase diagrams of these PBA/ILs systems are strongly asymmetric with the critical composition shifted to low concentrations of PBA. As the molecular weight
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A Conjugated Copolymer Bearing Imidazolium-based Ionic Liquid: Electrochemical Synthesis and Electrochromic Properties Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-25 Xiao-Jing Lv, Li-Bin Xu, Liang Qian, Yuan-Yuan Yang, Zhi-Yi Xu, Jin Li, Cheng Zhang
An imidazolium-based ionic liquid (IL) modified triphenylamine derivative, namely 1-(4-((4-(diphenylamino)benzoyl) oxy)butyl)-3-methyl imidazole tetrafluoroborate (TPAC6IL-BF4), was designed and synthesized, and further applied with 3,4-ethylene dioxythiophene (EDOT) to prepare conjugated copolymer P(EDOT:TPAC6IL-BF4) via electrochemical polymerization. The cyclic voltammetry curves show that the copolymer
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Conformational and Dynamical Evolution of Block Copolymers in Shear Flow Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-20 Xiang-Xin Kong, Wen-Duo Chen, Feng-Chao Cui, Yun-Qi Li
Conformation and dynamical evolution of block copolymers in shear flow is an important topic in polymer physics that underscores the forming process of various materials. We explored deformation and dynamics of copolymers composed of rigid or flexible blocks in simple shear flow by employing multiparticle collision dynamics integrated with molecular dynamics simulations. We found that compared with
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Coalescence Suppression in Flowing Polymer Blends Using Silica Rods with Different Surface Chemistries Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-17 Si-Ying Xiang, Li-Sa-Ya Ye, Ya-Jiang Huang, Ya-Dong Lv, Mi-Qiu Kong, Guang-Xian Li
Silica rods with homogeneous (hydrophilic or hydrophobic) and amphiphilic surface properties were synthesized and their efficiencies in suppressing the flow-induced droplet coalescence of immiscible polyisobutylene (PIB)/polydimethylsiloxane (PDMS) blends were evaluated via in situ visualization technique. The flow-induced coalescence behavior of blends was found to strongly depend on the surface nature
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Visualization of Two-dimensional Single Chains of Hybrid Polyelectrolytes on Solid Surface Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-16 Lan-Lan Zhang, Wen-Ke Miao, Li-Jun Ren, Yu-Kun Yan, Wei Wang
The polyacidic character of polyoxometalate (POM) clusters endows high ionic conductivity, making these clusters good candidates for solar and fuel cells. Covalent bonding of clusters to polymer chains creates poly(POM)s that are polyelectrolytes with both cluster functions and polymer performance. Thus, solution-processable poly(POM)s are expected to be used as key materials in advanced devices. Further
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High Strength Electrospun Single Copolyacrylonitrile (coPAN) Nanofibers with Improved Molecular Orientation by Drawing Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-16 Tang-Cheng Xu, Dong-Hua Han, Yong-Mei Zhu, Gai-Gai Duan, Kun-Ming Liu, Hao-Qing Hou
High-performance carbon nanofibers are highly dependent on the performance of their precursors, especially polyacrylonitrile (PAN). In this work, the copolymer of PAN (coPAN) was synthesized for electrospinning. A self-assembling set-up was used for the stretching of single coPAN nanofibers. FTIR and Raman spectroscopies were used to characterize the chemical structure of coPAN nanofibers. Scanning
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Enhanced Gas Separation Performance by Embedding Submicron Poly(ethylene glycol) Capsules into Polyetherimide Membrane Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-12 Ying-Ying Ma, Min Liu, Jing-Tao Wang, Bin Zhu, Yi-Fan Li
Recently, hollow filler as an emerging concept is attracting more attention in preparation of mixed matrix membranes (MMMs). Herein, poly(ethylene glycol) microcapsules (PMC) are synthesized via distillation precipitation polymerization and embedded into the polyetherimide (Ultem®1000) matrix to fabricate MMMs for CO2 capture. The PMC exhibits a preferential hollow structure within the Ultem matrix
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Highly Transparent and Colorless Polyimide Film with Low Dielectric Constant by Introducing Meta -substituted Structure and Trifluoromethyl Groups Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-10 Hong-Tao Zuo, Feng Gan, Jie Dong, Peng Zhang, Xin Zhao, Qing-Hua Zhang
An effective design strategy for preparing highly transparent polyimide film with low dielectric constant is presented. The key to the strategy is to simultaneously introduce meta-substituted structure and trifluoromethyl in polymer chains. By using this design strategy, a highly transparent polyimide film with low-k was synthesized from 3,5-diaminobenzotrifluoride (m-TFPDA) and 4,4′-(hexafluoroisopropylidene)
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Tough Double Metal-ion Cross-linked Elastomers with Temperature-adaptable Self-healing and Luminescence Properties Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-05 Qi-Yan Yin, Cheng-Hao Dai, Huan Chen, Kai Gou, Hong-Zhou Guan, Peng-Han Wang, Jing-Tao Jiang, Geng-Sheng Weng
Smart materials with a combination of tough solid-like properties, fast self-healing and optical responsiveness are of interests for the development of new soft machines and wearable electronics. In this work, tough physically cross-linked elastomers that show high mechanical strength, intriguing temperature-adaptable self-healing and fluorochromic response properties are designed using aluminum (Al)
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Unusual Spherulitic Morphology of Poly(propylene fumarate) Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-04 Xiao-Yu Meng, Yi Li, Shu-Fang Yao, Xue-Wei Wei, Hai-Mu Ye
Spherulites are the most common crystalline morphology and thus the visual expression of crystal structures for polymers. The diversified patterns have provided intuitive morphology probes for various crystallization behaviors, while the correlations between them are still needed to be enriched. In this work, the complicated spherulitic morphology of poly(propylene fumarate) (PPF), which is sensitive
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Photoinduced Reversible Solid-to-Liquid Transitions and Directional Photofluidization of Azobenzene-containing Polymers Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-11-04 Shuo-Feng Liang, Chen Nie, Jie Yan, Qi-Jin Zhang, Si Wu
Photoinduced reversible liquefaction and solidification of polymers enable processing and healing of polymers with light. Some azobenzene-containing polymers (azopolymers) exhibit two types of photoinduced liquefaction properties: photoinduced reversible solid-to-liquid transition and directional photofluidization. For the first type, light switches the glass transition temperature (Tg) values of azopolymers
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Robust and Self-healable Antibiofilm Multilayer Coatings Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-26 Chao Zhou, Jun-Tao Zhou, Cheng-Ju Sheng, Dicky Pranantyo, Yan Pan, Xiao-Jia Huang
The infection induced by implantation of biomedical materials may result from the biofilm formation after bacteria attachment. Hence, the antibiofilm surface coating represents a novel technique to improve the antibacterial activity of biomedical materials. The traditional antibiofilm surface coatings exhibited some disadvantages and provided a limited service life. In this work, we used polyethyleneimine
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Stereocomplex Crystallization in Asymmetric Diblock Copolymers Studied by Dynamic Monte Carlo Simulations Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-23 Ying Xu, Jun Yang, Zong-Fa Liu, Zhi-Ping Zhou, Zhao-Peng Liang, Tong-Fan Hao, Yi-Jing Nie
Stereocomplex crystallization in asymmetric diblock copolymers was studied using dynamic Monte Carlo simulations, and the key factor dominating the formation of stereocomplex crystallites (SCs) was uncovered. The asymmetric diblock copolymers with higher degree of asymmetry exhibit larger difference between volume fractions of beads of different blocks, and local miscibility between different kinds
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Yttrium-catalyzed cis -1,4-Selective Polymerization of 2-(4-Halophenyl)-1,3-Butadienes and Their Copolymerization with Isoprene Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-16 Jian-Ming Huang, Chang-Guang Yao, Shi-Hui Li, Dong-Mei Cui
Polymerization of 2-(4-halophenyl)-1,3-butadiene (2-XPB) and their copolymerization with isoprene using a yttrium catalyst have been examined. The β-diketiminato yttrium bis(alkyl) complex (1) activated by [Ph3C][B(C6F5)4] and AliBu3 shows high cis-1,4-selectivity (>98%) for the polymerization of 2-XPB (2-XPB = 2-FPB, 2-ClPB and 2-BrPB) to afford halogenated plastic poly(dienes) with glass transition
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Antimicrobial Properties and Application of Polysaccharides and Their Derivatives Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-16 Gui-Xue Xia, Yue-Ming Wu, Yu-Fang Bi, Kang Chen, Wei-Wei Zhang, Shi-Qi Liu, Wen-Jing Zhang, Run-Hui Liu
With the quick emergence of antibiotic resistance and multi-drug resistant microbes, more and more attention has been paid to the development of new antimicrobial agents that have potential to take the challenge. Polysaccharides, as one of the major classes of biopolymers, were explored for their antimicrobial properties and applications, owing to their easy accessibility, biocompatibility and easy
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Preparation of Hydrophilic UHMWPE Hollow Fiber Membranes by Chemically Bounding Silica Nanoparticles Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-16 Lian-Lian Fan, Jia-You Quan, Hao Zhang, Jun-Rong Yu, Zu-Ming Hu, Yan Wang
In this work, ultra-high molecular weight polyethylene (UHMWPE) microfiltration hollow fiber membranes prepared via the thermally induced phase separation (TIPS) method were modified by chemically bounding hydrophilic silica (SiO2) nanoparticles onto the surface to improve anti-fouling performance. A range of testing techniques including attenuated total reflection Flourier transformed infrared spectroscopy
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Flexible Electrochromic Poly(thiophene-furan) Film via Electrodeposition with High Stability Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-15 Wen-Qian Yao, Pei-Pei Liu, Wei-Qiang Zhou, Xue-Min Duan, Jing-Kun Xu, Jia-Ji Yang, Shou-Li Ming, Meng Li, Feng-Xing Jiang
Flexible electrochromic (EC) materials have an urgent demand in the current electronic equipment market due to their technological interest and applications. However, at present, few flexible EC devices developed by industry exist due to some problems and challenges still to be solved such as flexibility. In this work, we have successfully synthesized a novel thiophene-furan (TFu) monomer via Stille
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An Ultrasensitive, Durable and Stretchable Strain Sensor with Crack-wrinkle Structure for Human Motion Monitoring Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-14 Ze-Yu Li, Wei Zhai, Yun-Fei Yu, Guo-Jie Li, Peng-Fei Zhan, Jian-Wei Xu, Guo-Qiang Zheng, Kun Dai, Chun-Tai Liu, Chang-Yu Shen
Flexible strain sensor has promising features in successful application of health monitoring, electronic skins and smart robotics, etc. Here, we report an ultrasensitive strain sensor with a novel crack-wrinkle structure (CWS) based on graphite nanoplates (GNPs)/thermoplastic urethane (TPU)/polydimethylsiloxane (PDMS) nanocomposite. The CWS is constructed by pressing and dragging GNP layer on TPU substrate
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Facile Mechanochemical Preparation of Polyamide-derivatives via Solid-state Benzoxazine-isocyanide Chemistry Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-14 Xu Sun, Wei Shi, Xin-Yu Zhou, Sheng Ding
With the exploration of novel sustainable protocol for functional polyamides’ (PAs) construction as the starting point, herein, the small molecular model compound (M1-ssBIC) was prepared firstly by manual grinding of monofunctional benzoxazine (1a) and isocyanide (1b) via solid-state benzoxazine-isocyanide chemistry (ssBIC) to evaluate the feasibility of ssBIC. Linear PAs (P1-series polymers) were
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The Relationship between Pendant Phosphate Groups and Mechanical Properties of Polyisoprene Rubber Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-13 Shi-Qi Li, Mao-Zhu Tang, Cheng Huang, Rong Zhang, Guang-Su Huang, Yun-Xiang Xu
It is still a great challenge to mimic the structure and function of natural rubber by introducing polar components into synthetic polyisoprene. In order to explore the function of phosphate groups on the mechanical properties of polyisoprene rubber, a terminally functionalized compound (PIP-P) containing phosphate groups was synthesized and further vulcanized to prepare the model compound V-PIP-P
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Scalable Reaction-spinning of Rigid-rod Upilex-S® Type Polyimide Fiber with an Ultrahigh T g Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-13 Sen-Sen Zheng, Han Dong, Shi-Hua Wang, Jie Dong, Tao Guo, Xin Zhao, Qing-Hua Zhang
In the family of polyimide (PI) materials, Upilex-S® film has been a shining star through the research PI materials due to its appealing merits. Unfortunately, the wholly rigid-rod backbone and easily formed skin-core micromorphology and microvoids of Upilex-S® type PI lead to the high difficulty in melt- and wet-spinning fabrication. Herein, we propose a facile and scalable method, reaction-spinning
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Structural Changes and Electrodynamic Effects in Polymers under Fast Uniaxial Compression Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-13 Aleksey. I. Aleksandrov, Ivan A. Aleksandrov, Vitaliy G. Shevchenko, Aleksandr N. Ozerin
Rheological explosion in polymers under uniaxial compression in an open volume occurs at the end of continuous rapid plastic deformation after several stages of creep. Two types of polymers were chosen for this study: brittle glassy amorphous polystyrene and thermoplastic semi-crystalline polypropylene. Electric pulses were detected during explosion, and their spectra were analyzed with two models
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Thienylmethylene Oxindole Based Conjugated Polymers via Direct Arylation Polymerization and Their Electrochromic Properties Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-09 Wei Yang, Hao-Guo Yue, Dong Zhao, Hui Yan, Kang-Li Cao, Jin-Sheng Zhao, Qing Zhang
Direct arylation methods have been used to polymerize thienylmethylene oxindoles (TEIs) and 3,3-bis[[(2-ethylhexyl)oxy]methyl]-3,4-dihydro-2H-thieno-[3,4-b][1,4]dioxepin (ProDOT) for new donor-acceptor conjugated polymers. The polymers exhibited blue hues in neutral-state with distinct color-to-transmissive reversible electrochromic switching under applied potentials from 0 V to +1.5 V, and showed
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Correction to “Enhanced Crystallization Rate of Poly(L-lactide)/Hydroxyapatite-graft-poly(D-lactide) Composite with Different Processing Temperatures” Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-09 Min Wang, Lei-Chu You, Yu-Qi Guo, Ni Jiang, Zhi-Hua Gan, Zhen-Bo Ning
In the version of this Article originally published, Fig. 7(f) was confused with Fig. 4(f). The corrected version of Fig. 7 is provided below. This graphical amendment does not affect the analyses, and additional text corrections are not needed.
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Computer Simulation Study on Adsorption and Conformation of Polymer Chains Driven by External Force Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-07 He-Bei Gao, Hong Li, Xiao-Qin Zhang, Xiang-Hong Wang, Chao-Yang Li, Meng-Bo Luo
In this work, Monte Carlo simulations are used to study the critical adsorption behaviors of flexible polymer chains under the action of an external driving force F parallel to an attractive flat surface. The critical adsorption temperature Tc decreases linearly with increasing F, indicating that the driving force suppresses the adsorption of polymer. The conformation of polymer is also affected by
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Dynamic Bonds Mediate π-π Interaction via Phase Locking Effect for Enhanced Heat Resistant Thermoplastic Polyurethane Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-10 Yue Lai, Xiao Kuang, Wen-Hong Yang, Yu Wang, Ping Zhu, Jing-Pu Li, Xia Dong, Du-Jin Wang
Stimulus-responsive polymers containing dynamic bonds enable fascinating properties of self-healing, recycling and reprocessing due to enhanced relaxation of polymer chain/network with labile linkages. Here, we study the structure and properties of a new type of thermoplastic polyurethanes (TPUs) with trapped dynamic covalent bonds in the hard-phase domain and report the frustrated relaxation of TPUs
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Effect of Interfacial Adsorption on the Stability of Thin Polymer Films in a Solvent-induced Process Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-10-04 Lin Xu, Tong-Fei Shi, Li-Jia An, Yu-Yuan Lu, Li-Na Wang
The stability of ultrathin polymer films plays a crucial role in their technological applications. Here, we systematically investigated the influence of interfacial adsorption in physical aging and the stability of thin polymer films in the solvent-induced process. We further identify the stability mechanism from the theory of thin film stability. Our results show that the aging temperature and film
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Stress-Structure Relationship of the Reversible Associating Polymer Network under Start-up Shear Flow Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-30 Ai-Qing Liu, Li-Jun Liu, Wen-Sheng Xu, Xiao-Lei Xu, Ji-Zhong Chen, Li-Jia An
We adopt Langevin dynamics to explore the stress-structure relationship of telechelic reversible associating polymer gel during startup shear flow, with shear strengths varying from Wi = 12.6 to Wi = 12640. At weak shear flow Wi = 12.6, the shear stress proportionally increases with shear strain at short times, followed by a strain hardening behavior and then passes through a maximum (σmax, γmax) and
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A Potential Alternative to Polystyrene: Ring-opening Terpolymerization of Different Epoxides with Phthalic Anhydride Using Metal-free Dual Catalysts Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-30 Li-Miao Lin, Yong-Hang Xu, Man Shen, Jia-Xin Liang, Shuan-Jin Wang, Min Xiao, Yue-Zhong Meng
A series of semi-aromatic polyesters named as Poly(PO-CHO-PA) were facilely synthesized via ring-opening terpolymerization of bio-based cyclohexane oxide (CHO)/propylene oxide (PO)/phthalic anhydride (PA) using economical U1/PPNCl as dual catalyst. The proportion of CHO-PA and PO-PA segments in polymer can be readily altered by changing the feed ratio of CHO/PO because the reactivity ratios of CHO
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Side-chains Engineering of Conjugated Polymers toward Additive-free Non-fullerene Organic Solar Cells Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-29 Feng Liu, Dan Wang, Jun-Yu Li, Cheng-Yi Xiao, Yong-Gang Wu, Wei-Wei Li, Guang-Sheng Fu
Side-chain engineering plays a significant role in the design of conjugated materials. In this work, a series of conjugated polymers PBDB-T-R with functionalized groups at the end of side units were developed as electron donor for organic solar cells (OSCs). The donor polymers PBDB-T-I and PBDB-T-OAc with iodine and acetate end groups exhibited similar absorption and energy levels, but showed much
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A Self-supporting, Surface Carbonized Filter Paper Membrane for Efficient Water-in-Oil Emulsion Separation Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-29 Jiang-Yong-Quan Cao, Si-Chong Chen, Jie Zhang, Yang-Yang Xie, Yu-Zhong Wang
Due to the important role of oil source in our life, the separation of water-in-oil emulsion is urgent and necessary. Membrane seperation technology has been an efficient and widely used method in separating oil-water separation. Herein, we report a versatile approach to fabricate surface carbonized membranes with self-standing property from biomass-derived precursor by synergistic charring of phytic
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Combined Molecular Dynamics Simulation and Rouse Model Analysis of Static and Dynamic Properties of Unentangled Polymer Melts with Different Chain Architectures Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-29 Pu Yao, Lu-Kun Feng, Hong-Xia Guo
Chain architecture effect on static and dynamic properties of unentangled polymers is explored by molecular dynamics simulation and Rouse mode analysis based on graph theory. For open chains, although they generally obey ideal scaling in chain dimensions, local structure exhibits nonideal behavior due to the incomplete excluded volume (EV) screening, the reduced mean square internal distance (MSID)
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How the Aggregates Determine Bound Rubber Models in Silicone Rubber? A Contrast Matching Neutron Scattering Study Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-21 Li-Zhao Huang, Yue Shui, Wei Chen, Zhong-Ming Li, Hong-Tao Song, Guang-Ai Sun, Jia-Zhuang Xu, Gan-Ji Zhong, Dong Liu
The correlation between aggregates and bound rubber structures in silicone rubbers (S(phr)) with various silica fractions (ΦSi) has been investigated by contrast matching small-angle neutron scattering (SANS), swelling kinetics, and low-field nuclear magnetic resonance (NMR). Mixed solvents with deuterated cyclohexane fractions of 4.9% and 53.7% were chosen to match the scattering length densities
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Effect of the Nanoparticle Functionalization on the Cavitation and Crazing Process in the Polymer Nanocomposites Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-28 Yan-Long Luo, Tian-Tian Li, Bin Li, Xian-Ling Chen, Zhen-Yang Luo, Yang-Yang Gao, Li-Qun Zhang
The nanoparticle (NP) functionalization is an effective method for enhancing their compatibility with polymer which can influence the fracture property of the polymer nanocomposites (PNCs). This work aims to further understand the cavitation and crazing process, hoping to uncover the fracture mechanism on the molecular level. By adopting a coarse-grained molecular dynamics simulation, the fracture
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Super Strong and Tough Elastomers Enabled by Sacrificial Segregated Network Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-21 Yong Zhu, Lai-Yun Wei, Xuan Fu, Jun-Qi Zhang, Ling-Min Kong, Guang-Su Huang, Jin-Rong Wu
The integration of high strength and toughness concurrently is a vital requirement for elastomers from the perspective of long-term durability and reliability. Unfortunately, these properties are generally conflicting in artificial materials. In the present work, we propose a facile strategy to simultaneously toughen and strengthen elastomers by constructing 3D segregated filler network via a simple
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Platinum Atoms Dispersed in Single-chain Polymer Nanoparticles Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-18 Zhi-Yu Hu, Hong-Ting Pu, Jian-Guo Wu
The intramolecular cross-linking of single polymer chains can form single-chain nanoparticles (SCNPs), which have many applications. In this study, styrenic copolymers with pendent triphenylphosphine as the coordination site for platinum ions (Pt(II)) and benzocyclobutene as the latent reactive groups are synthesized. Triphenylphosphine groups in the chains can coordinate Pt(II) and aid slight single-chain
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The Effect of Branching Structure on the Properties of Entangled or Non-covalently Crosslinked Polyisoprene Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-14 Mo-Kun Chen, Rong Zhang, Mao-Zhu Tang, Guang-Su Huang, Yun-Xiang Xu
The branching structures in natural rubber (NR) were believed to be critical for its superior mechanical properties. However, it is challenging to unravel the branching structure-function relationship of NR due to the complexity of the system. Herein, polyisoprene-(polyisoprene-g-polylactide) (PI-PLA) as model compound containing branching structure was designed and synthesized, which can improve the
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Conductive Film with Flexible and Stretchable Capability for Sensor Application and Stealth Information Transmission Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-11 Yi-Fei Shan, Kun Yang, Zhi-Xi Li, Xiao-Xiao Wang, Hao Li, Yong-Yan Cui
Flexible and wearable strain sensors for human-computer interaction, health monitoring, and soft robotics have drawn widespread attention to promising applications in the next generation of artificial intelligence devices. However, conventional semiconductor sensors are difficult to meet the requirements of flexibility and stretchability. Here, we reported a kind of novel and simple sensor based on
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Facile Adjusting for Cells of Lightweight Isocyanate-based Polyimide Foam and Operable Combination between Different Distinctive Acoustic Foams for Higher Performance Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-07 Xiao-He Ren, Gao-Hui Sun, Lei-Chao Wang, Rong-Rong Chen, Jun Wang, Shi-Hui Han
New ambient sound absorption material, lightweight isocyanate-based polyimide foam (IBPIF), was fabricated by operable combination between different distinctive acoustic IBPIF. Cellular structure of IBPIF was facilely and obviously adjusted by increased slurry temperature corresponding to change in distinctive acoustic properties. Moreover, density of all IBPIF kept at only 12–17 kg/m3. With increasing
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Polyarylene Ether Nitrile and Titanium Dioxide Hybrids as Thermal Resistant Dielectrics Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-02 Ren-Bo Wei, Chen-Hao Zhan, Yang Yang, Peng-Lin He, Xiao-Bo Liu
With the expanding application of capacitors, thermal resistant dielectric materials are in high demand due to the increasing harsh environments where the capacitors are needed and the heat generated by the capacitors. Herein, we present polyarylene ether nitrile and titanium dioxide hybrids which can be used as thermal resistant dielectrics for these capacitors. Phthalonitrile modified titanium dioxide
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An Interfacial Dynamic Crosslinking Approach toward Catalyst-free and Mechanically Robust Elastomeric Vitrimer with a Segregated Structure Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-02 Yong Zhu, Jing-Li Gao, Lin-Jun Zhang, Yan Peng, Hao Wang, Fang-Wei Ling, Guang-Su Huang, Jin-Rong Wu
Elastomeric vitrimers with covalent adaptable networks are promising candidates to overcome the intrinsic drawbacks of conventional covalently-crosslinked elastomers; however, most elastomeric vitrimers show poor mechanical properties and require the addition of exogenous catalysts. Herein, we fabricate a catalyst-free and mechanically robust elastomeric vitrimer by constructing a segregated structure
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Effect of Different Shear Modes on Morphology and Mechanical Properties of Polypropylene Pipes Produced by Rotational Shear Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-09-02 Wei-Chen Zhou, Zu-Chen Du, Hao Yang, Jun-Jie Li, Ying Zhang, Xue-Qin Gao, Qiang Fu
Oriented “shish-kebab” structures could be obtained by shearing to enhance the mechanical properties of polymer samples markedly. However, the effect of shear mode on mechanical properties is still uncertain. The study of stepped hoop shear field on the isotactic polypropylene (iPP) pipe was developed through applying a self-designed rotational shear system (RSS). The effect of stepped shear field
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Syntheses of Soluble Biopolyimides Using 4-Aminophenylalanine Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-07-27 Kenji Takada, Hiromasa Shinagawa, Yuki Morita, Manjit S. Grewal, Kazuya Taya, Amit Kumar, Tatsuo Kaneko
4-Aminophenylalanine (4APhe), an exotic amino acid which is obtained as a microorganism metabolite of glucose, is polycondensed with various tetracarboxylic dianhydrides as a diamine monomer to obtain poly(amic acid)s. Subsequent thermal imidization of poly(amic acid)s is made at 220 °C with stepwise heating from 100 °C. Some of the obtained polyimides (PIs) exhibited good solubility in organic solvents
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Cellulose Acetate Thermoplastics with High Modulus, Dimensional Stability and Anti-migration Properties by Using CA- g -PLA as Macromolecular Plasticizer Chinese. J. Polym. Sci. (IF 3.154) Pub Date : 2020-07-29 Ru-Meng Xu, Tian-Tian Yang, Elvira Vidović, Ruo-Nan Jia, Jin-Ming Zhang, Qin-Yong Mi, Jun Zhang
Cellulose diacetate (CDA) can be melt-processed to produce numerous and widely-used plastic products. However, due to the high glass transition temperature (Tg) of CDA, the addition of up to 30 wt% of micromolecular plasticizers is indispensable, which significantly reduces the dimensional stability and raises safety concerns from the migration of plasticizers. In this work, a series of CDA-graft-poly(lactic
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