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Wound dressings based on chitosan and gelatin containing starch, sesame oil and banana peel powder for the treatment of skin burn wounds J. Polym. Res. (IF 2.426) Pub Date : 2021-01-26 Zhaleh Alborzi, Hossein Izadi-Vasafi, Faezeh Ghayoumi
A novel wound dressing based on chitosan (CS) and gelatin (GL) was prepared and the effect of potato-starch (ST), sesame oil (SO) and banana peel powder (BPP) on the physical and mechanical properties, cytocompatibility and wound healing capability of the films were evaluated. The mechanical results showed that the samples containing 5 wt% of potato-starch and 7 wt% of banana peel powder had the best
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The degradation of thin poly(methyl methacrylate) films subjected to different destructive treatments J. Polym. Res. (IF 2.426) Pub Date : 2021-01-26 A. D. Berdie, A. A. Berdie, S. Jitian
A comparative study of the degradation of poly(methyl methacrylate) (PMMA) films deposited on metal mirrors as a result of heat treatment or irradiation with various UV or γ radiation is presented. The main degradation processes of PMMA during degradation are the random homolytic breakdown of carbon–carbon bonds in the polymer main chain and the photolysis of the lateral methyl groups and lateral esters
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Pectin-based self-healing hydrogel with NaHCO 3 degradability for drug loading and release J. Polym. Res. (IF 2.426) Pub Date : 2021-01-25 Danyang Chen, Limin Chang, Ziwei Zhou, Yunyi Bo, Yong Wang, Yingna He, Jianglei Qin
Self-healing hydrogels which have magical self-healing properties have attracted much attention in recent years. Here, we prepared a self-healing hydrogel with biocompatibility and NaHCO3 degradability. The hydrogel is constructed from cross-linking of poly(N,N-dimethyl acrylamide-stat-4-formylphenyl acrylate) P(DMA-stat-FPA) by pectin achlydrazide (pectin-AH). This hydrogel has base labile phenolic
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Generation of a pH-blind/pH-sensitive alternating surface on a hydrophobic resin by mussel-inspired chemistry and investigating the effect of surface modification on the adsorption dynamics of some anionic colorants J. Polym. Res. (IF 2.426) Pub Date : 2021-01-25 Orhan Gezici, Abdullah Taner Bişgin
The effect of a surface modification process known as "mussel-inspired modification" on the adsorption dynamics of hydrophobic adsorbent, namely XAD1180, was studied based on equilibrium adsorption data. In the study, three anionic colorants (i.e., Sunset yellow, SY; Allura red, AR; and Tartrazine, TZ) were used as the model compounds. The role of some experimental parameters, such as pH (4–7), ionic
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A water stable Zn(II)-MOF for luminescent detection of Fe 3+ ion and clinic nursing values on the anaphylactic shock by up-regulating the α receptor expression J. Polym. Res. (IF 2.426) Pub Date : 2021-01-24 Yin-Er Yao, Bo Yang, Lei Wang
Abstract The porous three-dimensional metal organic framework (MOF) based on Zn(II) of {[Zn5(L)2(OH)2(OH2)2(H2O)4]·2DMF·H2O} (1) which contains the pentanuclear cluster of [Zn5(μ3-OH)2(μ2-OH2)2]8+ was synthesized through using oxygen-bridged 5,5′-oxidiisophthalic acid (H4L) connector under the solvothermal conditions and further characterized. The structural integrity and crystallinity of the skeleton
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Fabrication of polystyrene-acrylic/ZnO nanocomposite films for effective removal of methylene blue dye from water J. Polym. Res. (IF 2.426) Pub Date : 2021-01-21 Mariia Pasichnyk, Miroslava Václavíková, Inna Melnyk
Polymer nanocomposite films were formed from the aqueous dispersion of thermally linking styrene-acrylic copolymer (Tubifast 4010®, CHT), partially esterified melamine resin (Tubifix®, CHT), and ZnO nanoparticles as filler. The developed nanocomposite films were characterized by elemental (CHNS) analysis, SEM, EDX, IR spectroscopy, XRD, and swelling degree study. The EDX analysis proved the presence
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Nano-cavitation structure toughness mechanism and optical properties of amphiphilic acrylate block copolymer modified epoxy system J. Polym. Res. (IF 2.426) Pub Date : 2021-01-21 Ankang Yang, Lusi Zou, Shangwen Zha, Panpan Zhou, Panluo Wu, Rong Guan
A series of amphiphilic acrylate block copolymer (ABC) modified epoxy were prepared by the solution casting method. The mechanical strength, thermal stability, and light transmittance of the modified epoxies were characterized, and the fracture surfaces of the ABC modified epoxy were characterized with multi techniques for the toughening mechanism exploration. The results indicated that the glass transition
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Lignin addition to polyacrylonitrile copolymer solution and its effect on the properties of carbon fiber precursor J. Polym. Res. (IF 2.426) Pub Date : 2021-01-20 P. Porkodi, Abhilash J.K., Sheeja Sunil, Tarun Kumar Pardhi, Hemant Kumar Shukla, Sanjay K. Shete, Ashok Kumar
Polyacrylonitrile copolymer (PAN) fiber and PAN/lignin (PL) fiber were wet spun from the PAN copolymer solution and PAN/Lignin blend solution using dimethyl sulphoxide (DMSO) solvent. A blend of 90% by weight (wt %) PAN terpolymer and 10wt% lignin dissolved in DMSO was used in wet spinning of PL fiber. Viscoelastic properties of PAN solution and PAN/lignin solution in DMSO were determined by rheometer
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Treatment of hemp fibres for use in rotational moulding J. Polym. Res. (IF 2.426) Pub Date : 2021-01-20 Maria A. S. Oliveira, Kim L. Pickering, Tom Sunny, Richard J. T. Lin
The benefit of using alkali-treated hemp fibre as the reinforcement for rotationally moulded polyethylene composites was evaluated in this research. Untreated and alkali-treated hemp fibre were characterised using different techniques such as scanning electron microscopy (SEM), thermal analysis, and Fourier transform infrared spectroscopy (FT-IR). These techniques showed that the alkali treatment removed
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Co 2 O 3 and MnO 2 as inexpensive catalysts for the ring-opening polymerization of cyclic esters J. Polym. Res. (IF 2.426) Pub Date : 2021-01-18 Mrinmay Mandal, Debashis Chakraborty
The cheaper and easy to handle catalysts are particularly important for catalytic studies. Herein, inexpensive Co2O3 and MnO2 were used as catalysts for the ring-opening polymerization (ROP) of rac-lactide (rac-LA) and ε-caprolactone (ε-CL). The polymerization proceeded in a controlled manner with the formation of high molecular weight (Mn) and narrow dispersity (Ð). Heterotactically enriched (Pr up
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Exploring the effect of the spacer structure in the heterocyclic ring-fused isoindigo-based conjugated polymer on the charge-transporting property J. Polym. Res. (IF 2.426) Pub Date : 2021-01-16 Jian-Sian Li, Yen-Wen Huang, Yan-Cheng Lin, Fei-Hao Chen, Wen-Chang Chen, Chu-Chen Chueh
Isoindigo (IID) has been developed as an electron deficient moiety for high-performance conjugated organic materials, especially for constituting donor–acceptor (D-A) type conjugated polymers. To further enhance the planarity of IID unit to promote the associated intramolecular charge transfer (ICT) effect of the derived polymers, various of structural modifications have been performed in recent years
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Correction to: Alginate‑chitosan/MWCNTs nanocomposite: a novel approach for sustained release of Ibuprofen J. Polym. Res. (IF 2.426) Pub Date : 2021-01-15 Azeem Bibi, Sadiq‑ur‑Rehman, Tasleem Akhtar, Kalsoom Akhtar, Muhammad Farooq, Muhammad Imran Shahzad
The original version of this article unfortunately contained a mistake. The names of the authors were presented incorrectly as:
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Starch-graft-polyacrylamide copolymer /Fe3O4 /graphene oxide nanocomposite: synthesis, characterization, and application as a low-cost adsorbent for Ni (II) from aqueous solutions J. Polym. Res. (IF 2.426) Pub Date : 2021-01-15 Sh. H. Hegazy, S. K. Mohamed
Starch-g-polyacrylamide copolymer and its nanocomposite with Fe3O4 and graphene oxide have been successfully synthesized. The synthesized samples were characterized using FTIR, XRD, SEM, HRTEM, and VSM. The factors that affect the adsorption efficiency of samples for Ni(II) ions from aqueous solutions as pH, initial Ni(II) ions concentration, contact time and temperature have been examined. The maximum
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Design and in vivo evaluation of alginate-based pH-sensing electrospun wound dressing containing anthocyanins J. Polym. Res. (IF 2.426) Pub Date : 2021-01-15 Ayben Pakolpakçıl, Bilgen Osman, Gökhan Göktalay, Elif Tümay Özer, Yasemin Şahan, Behçet Becerir, Esra Karaca
In this study, a pH-sensing electrospun mat containing purple cabbage (PC) (Brassica oleracea) anthocyanins was developed for wound dressing application. The pH-sensing electrospun mat was prepared from sodium alginate (Alg) and poly (vinyl alcohol) (PVA) via electrospinning. PC anthocyanins were embedded into the electrospun mat with the addition of PC extract into the Alg/PVA electrospun solution
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The effects of the van der Waals potential energy on the Young’s modulus of a polymer: comparison between molecular dynamics simulation and experiment J. Polym. Res. (IF 2.426) Pub Date : 2021-01-14 Iwan H Sahputra, Andreas Echtermeyer
Molecular dynamics simulation were employed to investigate the effect of changing the potential energies describing primary and secondary bonds on the Young’s modulus of a polymer. The energies were changed by arbitrarily modifying the parameters of the potential energy model function. The parameters influence the structure of the polymer and its global energy, eventually causing changes to the Young’s
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Tensile strength and fracture mode I toughness of photocurable carbon fiber/polyether-polythioether composites J. Polym. Res. (IF 2.426) Pub Date : 2021-01-13 Ricardo Acosta Ortiz, José de Jesus Ku Herrera, Aldo Osiel Garcia Santos, Aida Esmeralda García Valdez, Gustavo Soria Arguello
This paper reports the development of a novel photocurable carbon fiber/polyether-polythioether (TF CFEC) composite and the comparison of its mechanical performance with that of a conventional thermally cured carbon fiber-epoxi composite (CTC CFEC). Unidirectional carbon fiber (CF) was used as the reinforcement agent in both composites. In the case of the TF CFEC, the CF employed was surface-functionalized
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Progress in MgCl 2 supported Ziegler-Natta catalyzed polyolefin products and applications J. Polym. Res. (IF 2.426) Pub Date : 2021-01-13 Parthiv M Trivedi, Virendra Kumar Gupta
The innovation of Ziegler-Natta (Z-N) catalysts opened a novel aspect of chemistry in terms of polyolefin formation. Significant progress of more than fifty years in catalytic olefin polymerization simplified polyolefin production by optimizing the reaction conditions and internal donors. In this review, we particularly emphasized on recent development on different internal donor based Z-N catalyst
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Stepwise behavior of surface properties caused by phase inversion in a polymer blend filled with dispersed iron J. Polym. Res. (IF 2.426) Pub Date : 2021-01-12 Yevgen Mamunya, Andrii Misiura, Michal Prochazka, Maria Omastova
The surface properties, mechanical characteristics, and morphology of the PP/CPA-Fe composite based on a polymer blend of polypropylene (PP) and copolyamide (CPA) filled with dispersed iron (Fe) were studied. The effect of stepwise behavior of the surface energy and its dispersive and polar components was previously unknown and discovered for the first time when the composition of the polymer blend
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Facile fabrication of non-spherical thiol-functionalized organosilica particles and their adsorption of Ag(I) J. Polym. Res. (IF 2.426) Pub Date : 2021-01-12 Yanling Pan, Xin Lu, Puyuan Li, Zhong Xin
Thiol-functionalized organosilica particles with bowl-like or golf ball-like morphology were successfully obtained through a facile sol–gel procedure. 3-mercaptopropyltrimethoxysilane (MPTMS) and tetraethoxysilane (TEOS) were copolymerized under the catalysis of ammonia. The morphology and the growth process of bowl-like and golf ball-like organosilica particles were observed using scanning electron
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Improvement of mechanical properties for epoxy composites with modified titanate whiskers via dopamine self-oxidation J. Polym. Res. (IF 2.426) Pub Date : 2021-01-11 Tao Wang, Renfeng Song, Wenjing Song, Yunhui Zhao, Kongying Zhu, Xiaoyan Yuan
Epoxy (EP) composites were intended with polydopamine modified titanate whiskers for mechanical improvement. The EP composites exhibited distinct morphology, and also demonstrated enhanced interfacial properties generated by functional groups on the modified whiskers and the matrix, which was favorable for composites mechanical performance. The composite with 7.5 wt% modified whiskers showed notable
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Electrosynthesis of silver metal nanocomposites in a copolymer matrix of 1-vinyl-1,2,4-triazole and acrylic acid J. Polym. Res. (IF 2.426) Pub Date : 2021-01-11 S. H. Sargsyan, A. S. Sargsyan, A. V. Meltonyan, A. H. Poghosyan, K. S. Margaryan
Nanocomposites and silver nanocomposite coatings based on a copolymer of 1-vinyl-1,2,4-triazole and acrylic acid were synthesized in an aqueous and aqueous-ethanol medium on pure iron and steel electrodes by the electrochemical method. The composition and structure of nanocomposites is confirmed by UV, IR spectroscopy, X-ray diffraction analysis, transmission electron microscopy, thermogravimetric
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Fabrication of highly thermal conductive PA6/hBN composites via in-situ polymerization process J. Polym. Res. (IF 2.426) Pub Date : 2021-01-11 He-xin Zhang, Do Hyun Seo, Dong-Eun Lee, Keun-Byoung Yoon
In this research, thermally conductive polyamide 6/hexagonal boron nitride (PA6/hBN) nanocomposites waaere fabricated via an in-situ ring-opening polymerization of ε-caprolactam. The hBN filler was exfoliated through a co-solvent exfoliation process and then chemically modified to form an ε-caprolactam-grafted BN (cBN). After that, PA6 was introduced onto the cBN surface using a grafting from method
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X-ray diffraction and Raman study of pressure-assisted photopolymerization in the ferrocene-doped C 60 crystals J. Polym. Res. (IF 2.426) Pub Date : 2021-01-11 K. P. Meletov, A. V. Kuzmin, S. S. Khasanov, D. V. Konarev
The pressure-assisted photopolymerization in the fullerene complex with ferrocene C60·{Fe(C5H5)2}2 was studied for the first time by simultaneous in-situ Raman and X-ray diffraction (XRD) techniques at pressures up to 8 GPa. The irreversible splitting of the Ag(2) mode in the Raman spectra, resembling pristine fullerene polymerization, was observed at 4.6 GPa. The structural analysis does not show
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Synthesis and evaluation of hybrid molecularly imprinted polymers for selective extraction of saccharin in aqueous medium J. Polym. Res. (IF 2.426) Pub Date : 2021-01-11 Camila Santos Dourado, Fabiana Casarin, Jez Willian Batista Braga, Fabricio Machado, Ana Cristi Basile Dias
Molecularly imprinted polymers (MIP) are known as high selective sorbent, however, its application in aqueous medium is very limiting. In this way, a new hybrid MIP was successfully synthesized for saccharin (SAC) extraction in aqueous medium. SAC determination in surface waters becomes a challenge due to high dissipation that results in low concentration and susceptibility to potential interferences
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Structural features of functional polysiloxanes radical and ionic photo-curing for laser printing applications J. Polym. Res. (IF 2.426) Pub Date : 2021-01-08 Pavel M. Talianov, Sergey S. Rzhevskii, Dmitrii V. Pankin, Konstantin V. Deriabin, Regina M. Islamova, Alina A. Manshina
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Functional nanocomposites and their potential applications: A review J. Polym. Res. (IF 2.426) Pub Date : 2021-01-08 Tufail Hassan, Abdul Salam, Amina Khan, Saif Ullah Khan, Halima Khanzada, Muhammad Wasim, Muhammad Qamar Khan, Ick Soo Kim
Herein, the review aims to compile some reportable work of researchers carried concerning the use of nanomaterials in the polymeric composites for significant improvements in the properties and to report the application areas of such nanocomposites. Carbon nanotubes, cellulose nanoparticles, titanium dioxide, and other nanoparticles are used in the polymeric composites to enhance their mechanical,
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Antibacterial gauze based on the synergistic antibacterial mechanism of antimicrobial peptides and silver nanoparticles J. Polym. Res. (IF 2.426) Pub Date : 2021-01-06 Li Chen, Jianyang Ai, Haihua Cai, Xiang Chen, Zulan Liu, Zhi Li, Fangying Dai
Antibacterial gauze is commonly used to prevent wound inflammation and infection. In this study, a novel antibacterial gauze was prepared using antimicrobial peptides and silver nanoparticles, achieving a wide antimicrobial spectrum and increased antimicrobial properties. The properties of the antibacterial gauze were analyzed by scanning electron microscopy, energy-dispersive spectrometry, weight
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Sonochemical synthesis and swelling behavior of Fe 3 O 4 nanocomposite based on poly(acrylamide-co-acrylic acid) hydrogel for drug delivery application J. Polym. Res. (IF 2.426) Pub Date : 2021-01-06 Rajabali Ebrahimi, Ghasem Rezanejade Bardajee
The addition of magnetic nanoparticles gives unique properties to hydrogels. Magnetic-sensitive gels have various applications in targeted drug delivery, separation, and sensing. One of the most advantageous aspects of using magnetic nanoparticles is their ability to respond to remote control by an external magnetic field. Microgels loaded with magnetic nanoparticles enhance control in magnetic resonance
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PLLA and cassava thermoplastic starch blends: crystalinity, mechanical properties, and UV degradation J. Polym. Res. (IF 2.426) Pub Date : 2021-01-06 César López, Kiryl Medina, Rosa D´Ambrosio, Rose Mary Michell
The effect of the addition of cassava thermoplastic starch on the general properties and the photodegradation behavior of poly(L-lactic acid) (PLLA) was evaluated by blending PLLA with TPS in different weight percentages (5, 10, 15, 20 and 25 wt%). The blends were studied through differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and mechanical
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Synthesis and characterization of liquid crystalline epoxy resins to study the effect of mesogenic length on the physical properties J. Polym. Res. (IF 2.426) Pub Date : 2021-01-06 Yi-Sheng Lin, Steve Lien-Chung Hsu, Tsung-Han Ho, Li-Cheng Jheng, Yu-Hsiang Hsiao
Two liquid crystalline epoxy (LCE) resins containing different mesogenic lengths were synthesized and cured with two different aromatic diamine curing agents, diaminodiphenylsulfone (DDS) and diaminodiphenylmethane (DDM) to prepare high performance LCE networks. The spectroscopic structures of LCE resins were identified by Fourier transform infrared (FT-IR) spectroscopy, Proton nuclear magnetic resonance
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Effect of mandrel rotation speed on morphology and mechanical properties of polypropylene pipes produced by rotational shear J. Polym. Res. (IF 2.426) Pub Date : 2021-01-06 Junjun Wu, Zexiang Xie, Hao Yang, Minghao Yang, Kaizhi Shen, Qiang Fu, Xueqin Gao
To research the role of mandrel rotation speed on the morphology and mechanical properties of polypropylene (PP) pipes, a self-made rotational shear system (RSS) was applied in this study to manufacture plastic pipes with improved hoop tensile strength through applying hoop shear on the pipes using a rotational mandrel. Morphology study results indicated that different morphologies of the PP pipes
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Synthesis, gas barrier and molecular simulation of intrinsic high-barrier polyimide bearing carbazole and amide J. Polym. Res. (IF 2.426) Pub Date : 2021-01-06 Yi-Wu Liu, Ao Tang, Jing-Hua Tan, Pan He, Xiang Zhang, Ding Wu, Yu-Hui Li, Xian-Qing Zhao, Hai-Liang Zhang
A novel diamine (3,6-CAPDA) bearing carbazole and amide group was prepared. On the basis of 3,6-CAPDA and pyromellitic dianhydride (PMDA), a high-barrier polyimide (3,6-CAPPI) was obtained through a two-step polymerization method. The 3,6-CAPPI displays excellent barrier performances and thermal stability. Its oxygen permeability (OP) and water vapor permeability (WVP) are low to 2.63 cm3·mil·m−2·day−1
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The effect of dynamic vulcanization systems on the mechanical properties and phase morphology of PLA/NR reactive blends J. Polym. Res. (IF 2.426) Pub Date : 2021-01-06 Peerapong Chanthot, Nittaya Kaeophimmueang, Patcharee Larpsuriyakul, Cattaleeya Pattamaprom
The effects of dynamic vulcanization systems including sulfur, peroxide, and sulfur/peroxide mixed vulcanization were investigated for dynamically-vulcanized blends of polylactic acid (PLA) and natural rubber (NR) at the PLA/NR ratio of 85/15. For the sulfur system, the CV sub-system (CV1), which used much lower accelerator (TBBS) content than the EV sub-system, rendered higher impact strength and
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Clickable perfluorocyclobutyl aryl ether polymers bearing azido groups: synthesis and post-functionalization J. Polym. Res. (IF 2.426) Pub Date : 2021-01-06 Shining Li, Jianrong Wu, Yuanqin Zhu
A novel class of clickable perfluorocyclobutyl (PFCB) aryl ether polymers containing azido groups (APFCB polymers) is reported. The thermal cyclopolymerization reaction of 2-methyl-1,4-bis(1,2,2-trifluorovinyloxy)benzene was first optimized by DSC, GPC and 19F NMR, and the matrix polymer (PFCB-Me) with high average molecular weights (Mw = 13.61 × 104 g/mol) and molecular weight distributions (Mw/Mn = 1
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Effect of surface coupling agents on the mechanical behaviour of polypropylene/silica composites: a molecular dynamics study J. Polym. Res. (IF 2.426) Pub Date : 2021-01-06 Qing-Xiang Pei, Viacheslav Sorkin, Ping Liu, Yucheng Zhong, Warintorn Thitsartarn, Chaobin He, Yong-Wei Zhang
We investigate the mechanical behavior of polypropylene/silica composites under mode I and II loading by using molecular dynamics simulations, focusing on the effects of two typical surface coupling agents of HMDZ and APTES on the interface deformation and failure. It is found that under mode I loading, the silica surface functionalized with APTES can enhance the tensile strength of polypropylene/silica
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Synthesis and characterization of poly(α-methyl β-alanine)-poly(ε-caprolactone) tri arm star polymer by hydrogen transfer polymerization, ring-opening polymerization and "click" chemistry J. Polym. Res. (IF 2.426) Pub Date : 2021-01-06 Bedrettin Savaş, Efkan Çatıker, Temel Öztürk, Ergül Meyvacı
Synthesis of poly(α-methyl β-alanine)-poly(ε-caprolactone) [PmBA-(PCL)2] tri arm star polymer was accomplished by "click" chemistry. For this purpose, poly(α-methyl β-alanine) (PmBA) was synthesized from methacrylamide by hydrogen transfer polymerization (HTP). Terminally dibromo PmBA (PmBA-2Br) was obtained by using the end-group modification method. Terminally diazido poly(α-methyl β-alanine) [PmBA-2N3]
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Synthesis, characterization and environmental application of an original adsorbent: polyaniline-coated luffa cylindrica J. Polym. Res. (IF 2.426) Pub Date : 2021-01-06 Awatef Dali, Imed Eddine Boulguemh, Fadila Louafi, Chabane Mouats
The coating of the fibrous skeleton of luffa cylindrica (LC) with polyaniline (PANI) was carried out by in-situ polymerization of aniline. A thin PANI layer in its emeraldine-salt form (ES) got bound on to the LC surface, as revealed by the green color the latter developed, procuring more roughness to the luffa fibers. The surfaces of both materials, i.e. the purified original luffa (LC) and the PANI-coated
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Preparation and characterization of titanium oxide based poly (vinylidene fluoride-co-hexafluoropropylene) polymer electrolyte films J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Ramaiah Narayanagari, Raja Vukka, Ramu Chekuri
The recent research focused on the fabrication of flexible battery and electrochemical performance in various fields such as flexible electronics, wearable sensors and implantable medical devices. Due to essential safety and less stability of the organic liquid-based electrolytes were replaced by the ionic liquid electrolytes with enhancing properties. In this manuscript, the flexible LIB was fabricated
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Research on synthesis and self-healing properties of interpenetrating network hydrogels based on reversible covalent and reversible non-covalent bonds J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Xiaowen Huang, Xiaofei Wang, Chuanying Shi, Yang Liu, Yanyan Wei
First of all, we will provide a brief background on the self-healing hydrogels we produced which are suitable for the complex environment of nature. In this paper, disulfide bonds and acylhydrazone bonds can be combined in SH-WPU and hydrogen bonds existed in PAMAM. And the hydrogel can achieve self-healing under acid, alkaline, neutral or light environment.Self-healing for 1 h, 24 h and 48 h, the
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Gelatinized and nongelatinized starch/pp blends: effect of starch source and carboxylic and incorporation J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Andréa Bercini Martins, Augusto Michelon Silveira, Fernando Dal Pont Morisso, Ruth Marlene Campomanes Santana
Due to the environmental impact caused by incorrect disposal and the non-biodegradability of synthetic polymers, the packaging sector seeks renewable raw materials. An alternative is the utilization of natural renewable polymer, such as thermoplastic starch (TPS), mixed with synthetics. However, the chemical incompatibility between these two materials leads to the use of a compatibilizer agent. Even
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Synthesis and evaluation of UV cross-linked Poly (acrylamide) loaded thymol nanogel for antifungal application in oral candidiasis J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Jitendra B. Naik, Rahul L. Rajput, Jitendra S. Narkhede, Arun Mujumdar, Pritam B. Patil
Oral candidiasis is an infection that occurs inside of the cheek and oral cavity which is very painful. Treatment of oral candidiasis is very important for its commonness and the inadequate medication options are available for the treatment. Synthesis and evaluation of Poly (acrylamide) loaded thymol nanogelalternative for conventional creams was the main aim of this study. Polyacrylamide nanogel was
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Self-healing disulfide-containing polyester-urethane networks composed of 6-armed star-shaped oligolactide and oligocaprolactone segments J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Warunya Ussama, Mitsuhiro Shibata
The ring opening polymerization reactions of ε-caprolactone and L-lactide in the presence of the initiator dipentaerythritol, generated the hydroxy-terminated 6-armed star-shaped ε-caprolactone and L-lactide oligomers (H6CLO and H6LAO), respectively. The disulfide-containing polyester-urethane networks (PN-LCxy-DSz, weight ratios of H6LAO/H6CLO: x/y = 1/0, 3/1, 1/1, 1/3, and 0/1, BHEDS/(H6LAO + H6CLO)
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Fast-scan chip-calorimetry measurement on crystallization and enthalpy relaxation kinetics of isotactic poly(cyclohexene carbonate) J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Meng Zhang, Zhaolei Li, Xiao Fan, Guichuan Ren, Weijie Guo, Haijun Zhou, Yu Ma
Isotactic poly(cyclohexene carbonate) (iPCHC) is a newly developed degradable semi-crystalline polymer. In this paper, the crystallization kinetics of iPCHC above the glass transition temperature (Tg) and the enthalpy relaxation kinetics below Tg were studied by using a commercial fast-scan chip-calorimeter—Flash DSC 1. Results showed that half crystallization time of iPCHC as a function of crystallization
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Super ductility in HDPE/EVA blends triggered by synthetic amorphous nanotalc J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Giovanni Savini, Rodrigo L. Oréfice
Binary and ternary systems of HDPE/EVA with amorphous nanotalc contents of 1% m/m were prepared by mixing the components in the molten state in a twin-screw extruder followed by injection molding. The thermal properties were investigated by thermogravimetric analysis (TGA) and by differential scanning calorimetry (DSC) and showed that the thermal stability of the nanocomposites was slightly improved
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CuS/polyurethane composite appropriate for 4D printing J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Virginija Vitola, Ivita Bite, Indra Apsite, Aleksejs Zolotarjovs, Arpan Biswas
Light-activated shape-memory materials can return to the originally printed or manufactured shape in temperatures higher than their glass transition temperatures. This effect is widely applicable in the field of biomedicine, biology and others. In this research we are focusing on new materials for light-activated 4D printing—the focus is placed on biocompatible CuS nanoparticle /polyurethane composite
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Polyethylene glycol fumarate/acrylated-silica nanocomposite: synthesis, characterization and in-vitro evaluation J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Pegah Afrough, Naeimeh Bahri-Laleh, Amin Hedayati-Moghaddam, S. Sepehr Tabatabaei, Javad Mokhtari-Aliabad, Farhad Amanizadeh-Fini, Seyed Amin Mirmohammadi
To make potential the biodegradable polyethylene glycol (PEGO) toward photocrosslinking, it was cooligomerized with fumaryl chloride by esterification reaction. The obtained viscous liquid injectable macromere, OPEGF, was characterized by FTIR and GPC. In another reaction, nanosilica was treated with acryloyl chloride to obtain silica-AC nanopowder and subsequently dispersed in the OPEGO matrix in
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Effect of coating on the mechanical properties of electrospun poly(3-hydroxybutyrate) materials with targeted fibers alignment J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Irena Borisova, Olya Stoilova, Nevena Manolova, Iliya Rashkov
Understanding the mechanical behavior of electrospun materials and how to control it is important and valuable in terms of their future applications. That is why, in this study, materials with controlled fibers alignment and desired mechanical properties were fabricated by electrospinning of poly(3-hydroxybutyrate) (PHB) onto three types of rotating collectors – drum (smooth), blade and grid (patterned)
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One-pot synthesis of cross-linked nonspherical polystyrene particles via dispersion polymerization: the effect of polymerization conditions on the morphology of the particles J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Alireza Hosseinzadeh, Younes Saadat, Soleyman Hosseinzadeh, Shahryar Pashaei
Herein we report the fabrication of cross-linked polystyrene particle with a variety of nonspherical morphologies such as red blood cell-like, cap-like, apple-like and so forth through two-stage dispersion polymerization in polar media. Furthermore, we examine the effect of different polymerization conditions including monomer and cross-linker concentration, and the type of initiator, monomer, stabilizer
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A polyethylene glycol (PEG) – polyethersulfone (PES)/multi-walled carbon nanotubes (MWCNTs) polymer blend mixed matrix membrane for CO 2 /N 2 separation J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Kar Kit Wong, Zeinab Abbas Jawad, Bridgid Lai Fui Chin
Recently, carbon capture utilizing membrane technology has received much attention to limit the adverse effect caused by rising carbon dioxide (CO2) concentration in the atmosphere as they are less energy intensive and more environmentally friendly. Among the type of membranes, mixed matrix membranes (MMMs) has shown promising gas separation results. In this study, polymer blend MMMs were fabricated
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Effects of star-shaped PCL having different numbers of arms on the mechanical, morphological, and thermal properties of PLA/PCL blends J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Merve Dandan Doganci
In this work, a series of linear and star-shaped poly(ε-caprolactone)s (SPCL) with various arm numbers were successfully synthesized with ring-opening polymerization (ROP) with the initiators having different number of hydroxyl functional groups. The molecular characteristics of synthesized PCLs were analyzed via Fourier Transform Infrared Spectroscopy (FTIR), proton nuclear magnetic resonance spectra
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A Mn(II)-coordination polymer: selective detection of Fe 3+ ion and treatment activity on sepsis via reducing the inflammatory cytokines releasing J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Xiaoqing Su, Shijie Yan, Qian Xu, Zhuojun Deng
Abstract In the current research, a new Mn(II)-based coordination polymer, {(NH2Me)2[Mn4(Hntb)4(4,4′-bpy)(OH)2] DMF} (1) have been formed by mixing the ligands of H3ntb (4,4′,4′′-nitrilotris-benzoic) and 4,4′-bpy (4,4′-bipyridine). According to the results of UV detection, complex 1 has strong blue luminescence, which means that it can be used as a fluorescent probe for specific detection of Fe3+ ion
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Amphiphilic copolymers modified with oleic acid and cholesterol by combining ring opening polymerization and click chemistry with improved amphotericin B loading capacity J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Angie V. Angarita-Villamizar, Elsa R. Arias, Ivonne L. Diaz, Leon D. Perez
Polymer micelles obtained from amphiphilic copolymers have emerged as promising drug vehicles given their nanometric size, simple release, and encapsulation mechanisms. Nevertheless, their lack of functional groups that interact with the drugs causes low encapsulation capacities. In this paper, the synthesis of an amphiphilic copolymer composed of polyethylene glycol and a poly(ester-co-carbonate)
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Optimized ciprofloxacin release from citric acid crosslinked starch-PVA hydrogel film: modelling with mixture design J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Jennifer David, Biswanath Mahanty
Projecting optimal composition for hydrogel blends, while designing sustained release formulation of hydrophilic drug, is of paramount importance. In present study, composite hydrogel incorporating ciprofloxacin (0.2% w/w) was prepared by sequential addition of polyvinyl alcohol (PVA) (20–95% w/w), starch (0–75% w/w), citric acid (5–80% w/w) as cross-linker in a heat-induced gelatinization process
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The effect of PCL/PEG ABA block lengths on the crystallization of homo/block- based polyurethane/CNW nanocomposites J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Mohammad Nourany, Shadi Ghelichkhani, Hadi Sarkhosh, Mehrad Zakizadeh, Toktam Behrouz
We report synthesis and characterization of a set of thermoset polyurethane (PU) bionanocomposites based on a polyol blend of poly(ε-caprolactone)/ polyethylene glycol (PCL/PEG) ABA block copolymers and their homopolymers (Mw: 2000 D). ABA block copolymers of PCL/PEG, with variable block lengths, were blended with their homopolymers. The relative weight content of Homo: Block (HB) was set 1:1 and the
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Glycolysis: an efficient route for recycling of end of life polyurethane foams J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Roghayeh Heiran, Abolfazl Ghaderian, Arunima Reghunadhan, Fatemeh Sedaghati, Sabu Thomas, Amir hossein Haghighi
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Polyacrylonitrile/clay nanofibrous nanocomposites for efficient adsorption of Cr (VI) ions J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Priya Bansal, Roli Purwar
This paper highlights the efficient adsorption of Cr (VI) from wastewater using polyacrylonitrile (PAN)/montmorillonite (Mt) and polyacrylonitrile/zinc oxide nanoparticle-modified montmorillonite (ZnO-Mt) nanofibrous nanocomposites as adsorbents. Mt was modified using zinc oxide nanoparticles (ZnO) by an adsorption process. The particle size of ZnO-Mt was found to be 18 ± 2 nm. Field-emission scanning
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Investigation into the effect of branch length of polyolefin and its statistical distribution on the flow improving performance J. Polym. Res. (IF 2.426) Pub Date : 2021-01-05 Seyed Mohammad Mahdi Mortazavi, Saeid Ahmadjo, Mojtaba Omidvar, Mohammad Reza Zamani, Rezvan Fallahnezhad
Ultra high molecular weight polyolefins as the main category of drag reducing agents play the main role in energy transportation. The present study seek to thoroughly investigate, the implications of several determining factors, such as catalyst structure, monomer type and concentration, in the coordinative polymerization of 1-olefins coupled with the corresponding accumulative effect of these precursors
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Correction to: Cellulose-based polymer electrolyte derived from waste coconut husk: residual lignin as a natural plasticizer J. Polym. Res. (IF 2.426) Pub Date : 2020-12-02 Kai Ying Chua, Ahmad Danial Azzahari, Cheyma Naceur Abouloula, Faridah Sonsudin, Nurshafiza Shahabudin, Rosiyah Yahya
The original version of this article unfortunately contained many mistakes with regard to some mathematical expressions and to Tables 3 & 5.
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Tensile and fracture properties of epoxy alumina composite: role of particle size and morphology J. Polym. Res. (IF 2.426) Pub Date : 2020-11-26 Vijay Verma, Ahmed Hasan Muquimuddin Sayyed, Chaitnaya Sharma, Dharmendra Kumar Shukla
Epoxy composites reinforced with three different shapes of Al2O3 nanoparticles were synthesized by instant cross-linking process. Out of three types of Al2O3 particles, two were of rod shape particles termed as large nano rod (diameter 2–4 nm and length 100–200 nm), and small nano rod (diameter of 5–10 nm and length less than 50 nm) and third particle was spherical in shape (diameter of 27–43 nm).
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Dual purpose, bio-based polylactic acid (PLA)-polycaprolactone (PCL) blends for coated abrasive and packaging industrial coating applications J. Polym. Res. (IF 2.426) Pub Date : 2020-11-25 N. Sundar, P. Keerthana, S. Ananda Kumar, G. Ananda Kumar, S. Ghosh
The purpose of this study is to replace the existing synthetic kraft paper with a biodegradable PLA-PCL kraft paper that can serve as a valuable coated abrasive and packaging products replacing the conventional petroleum based products. PCL toughens the brittle PLA polymer due to its plasticizing action. The toughening effect of 10% PCL in PLA is found to be maximum towards improving its better set
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