Herein, we fabricated a hybrid (mSiO2@ZrPB) by modifying mesoporous silica (mSiO2) with zirconium N,N′-piperazine (bismethylene phosphonate) (ZrPB) via a self-assembly method, and studied the effects of the combination between mSiO2@ZrPB and 10-(2,5-dihydroxyphenyl)-10H-9-oxa-10-phospha-phenantbrene-10-oxide (DOPO-HQ) on the curing behavior, flame retardancy, mechanical/thermal properties of epoxy/cyanate

This work aims to develop a multifunctional PMMA/CoFe2O4 polymeric film of low loss dielectric constant, high magnetic properties, and perceptible terahertz shielding effectiveness. Pure cobalt ferrite magnetic nanoparticles (CoFe2O4 MNPs) were prepared by a facile-modified solution deposition method. Then, the nanoparticles were loaded to poly (methyl methacrylate) of different ratios (x = 0, 5, 10

A new mild and efficient tin and titanium based catalyst combination have been explored for the synthesis of high molecular weight poly(butylene succinate). The new catalyst system is found to be more efficient and hydrolytically—as well as thermally—stable even at 250°C. Additionally, this new catalyst system is capable of producing very high molecular weight poly(butylene succinate) polymer in good

In this study, we report ultrafine-sized antibiotic dot particles targeting gram-negative bacteria. The water-soluble ultrafine-sized hyaluronate dot (dHA) was conjugated with polymyxin B (PMB, as a target material for lipopolysaccharide on a gram-negative bacteria) and chlorine e6 (Ce6, as a model photosensitizer), and it was denoted as dHA-(PMB/Ce6). These dot particles interacted with lipopolysaccharide

In order to improve the solubility and the long-cycle performance of hydrophobic drug sorafenib (SOR), and to obtain an ideal smart drug delivery system for the effective treatment of liver cancer, S-SMIP, a pH/GSH double-sensitive sorafenib stealth imprinting material, was successfully prepared by UV-initiated surface imprinted polymerization on the basis of polyethylene glycol 2000 (PEG2000) acted

In present work, the comparative study on annealing-induced high-impact toughness of linear and grafted polypropylene random copolymer (PPR and MPP) was performed. The changes of microstructure and mechanical properties of PPR and MPP upon annealing were investigated in detail. The results showed that maleic anhydride was grafted onto the backbone of PPR to form long-chain branched structure. During

Blending low content of poly[(R)-3-hydroxybutyrate-co-4-hydroxybutyrate] (P34HB ≤8 wt %) with poly(L-lactide) (PLLA) has proven effective in enhancing heat resistance of PLLA fibers. Unfortunately, the enhancement is relatively limited with boiling water shrinkage of PLLA/P34HB blend fibers reduced to 9.9% at most. In this study, a series of PLLA/poly[(R)-3-hydroxybutyrate] (PHB) blend fibers with

Monodisperse polystyrene-silver (PS-Ag) composite microspheres were used to enhance the electrical conductivity of epoxy resin-based anisotropic conductive adhesives (ACAs). Specially designed PS-Ag composite microspheres were used as conductive elements to construct anisotropic conductive arrays. In addition, the surface microstructure and morphology of PS-Ag composite microspheres were controlled

In this study, we demonstrated a new design technique for producing DNNH based on gellan-gum crosslinked by octavinyl polyhedral oligomeric silsesquioxane. Incorporating OV-POSS nanoparticles as cross-linkers into the first and second networks created strong coordination contacts and improved mechanical performance with 90% water. pH and contact time affect DNNH swelling, Ni(II), and Pb(II) removal

In recent years, materials with piezoelectric and electroconductive behavior have been thought interesting and important to be used for bone scaffolds due to their potential in mimicking the bone tissues. In the present work, attempts have been made to prepare three-dimensional laminated scaffolds by means of embedding the piezoelectric polyvinylidene fluoride (PVDF)/polylactic acid (PLA) electrospun

This study deal with introducing a novel biocompatible porous nanomaterial for anticancer drug delivery. For this purpose, a porous covalent triazine framework (CTF) was prepared by a solvothermal reaction. The structure and morphology characterization of the synthesized CTF was done through different techniques. Imatinib (IMA) were loaded thoroughly into the CTF to form IMA-loaded CTF (IMA@CTF) in

Polymer materials have been widely used in modern industries duo to their characteristics such as lightweight, low price, and corrosion resistance. However, the inherent insulation of polymer materials can cause static electricity, which has become one of the major problems that has limited their application. Meanwhile, as the basis for ensuring the service field and life of the polymer materials,

Immobilizing matrix plays a crucial role in anchoring the receptors of target biomolecules and enhancing the sensing capability of biosensor. Howbeit, the immobilization platforms that induce stable molecular interactions with the receptors without the need for harsh reaction conditions (covalent bonding) are rare. Herein, we report the design, development and application of novel semiconducting one-dimensional

Nylon is the general name of high molecular polymers with amide bonds repeat structure in the main chain. Because of its good wear resistance, excellent chemical resistance and outstanding impact resistance, it is widely used in various fields of national life, such as automobile parts, oil pipelines, electronic parts, gears, connectors, coating materials and medical applications. Using isocyanate

The enhancement of the colloidal stability of magnetite nanoparticles (MNPs) for environmental-related fields has greatly attracted researchers' attention. This study used a high hydrophilic negatively charged polyelectrolyte, poly(4-styrenesulfonic acid co-maleic acid) sodium (PSAAS), to enhance the colloidal stability of MNPs. Coating of the naked MNPs with PSAAS polyelectrolyte is a simple and rapid

This study aimed to prepare and characterize water-soluble chitosan-graphene oxide-silver nanoparticles (CS-GO-AgNP) fluids for 3D-inkjet printing of filtration membranes and to investigate the effects of Dimethylacetamide (DMAc) used as a co-solvent on the rheological properties and printability of the modified chitosan fluids. DMAc concentration increase affected rheological characteristics of CS

Waterborne polyurethane (WPU) damping material has been drawing much attention in academic field because of its low toxicity compared with polyurethane (PU) damping material. In order to expand the application range of WPU damping materials, it is necessary to further improve the hydrophobicity and damping properties of WPU. A novel dangling chain polyol-n (DCP-n, n expressed as average molecular weight

There are extensive reports on bathochromic emissive material associated with non-covalent interaction but the reports on emissive material with covalent crosslinked approach is limited. Therefore, we highlight unique method for synthesis of crosslinked polymeric materials formed via thermal Click reaction where the static aggregate of naphthalene (Np) in Polym-Np or pyrene (Py) in Polym-Py showed

Semi-conductive polymers have been used in a few area applications such as coatings, accumulators, solar cells, rechargeable batteries, ion sensors, photoreceptors, light-emitting diodes and electrochromic instruments. Poly(4-(trifluoromethyl)benzene-1,2-diamine)s of Poly(TFMBDA)-O and Poly(TFMBDA)-E were synthesized via chemical oxidative and enzymatic polymerization methods, respectively, using

A new low-cost composite ultrafiltration membrane made of polysulfone (PSf) and polystyrene (PS) blend was effectively achieved on the ceramic pozzolan support using dip-coating method. The effect of PS content (5–20 wt%) on membrane properties such as microstructure and filtration performances was investigated. The Fourier-transform infrared spectroscopy, nuclear magnetic resonance, and differential

Hydrophilic polymers have been recognized for enhancing the physico-chemical and biological properties of synthetic polyesters in the field of cancer treatment and tissue engineering. In this article, the anticancer drug, 5-fluorouracil loaded membranes were prepared with polycaprolactone blended with chitosan, hydroxypropyl methyl cellulose and polyethylene glycol to study the drug release ability

Benzoxazine resin is known as a high-performance thermosetting resin, but the relatively high curing temperature and low cross-linking density limit its broad application. The furylamine based benzoxazines possess great comprehensive performances and show great potential as bio-based materials. In this work, the benzoxazine precursors (BAfa-ma) containing furylamine were synthesized by using melamine

This work is devoted to investigate novel aspects of the rheological and optical response of hydroxypropyl methylcellulose (HPMC) as a result of temperature variations from 308.15 to 338.15 K. First, new insights on correlation between the solution flow behavior and the film thickness uniformity, under distinct temperatures, are established. Then, the HPMC film is examined from the point of view of

A novel hydrophobic rare earth-based aluminum hypophosphite (AHP) was prepared using rare earth aluminate coupling agent (REA) in a ball mill with a one-step mechanochemistry method, and used as flame retardant for epoxy resin. It has been found that RaAHP-4 (AHP was modified by 4 wt% REA) exhibited excellent hydrophobic properties with the water contact angle of 94.58°. The effect of RaAHP-2 (AHP

In the present study, polyurethane (PU) was prepared using a pre-polymer (two-shot) process with a novel phloroglucinol chain extender. PU nanocomposite was prepared by incorporating acid-FMWCNTs in pristine-PU. Polystyrene (PS) was functionalized with the nitro group through our previously reported method. The ternary blend composites (PU/PS-NO2/FMWNTs) were prepared using acid functionalized multiwall

New linear and cross-linked polyurethanes with cycloaliphatic units and renewable cross-linkers (Span 20 and Tween 20) were obtained by two steps polyaddition reaction. The degree of microphase separation was calculated by FTIR-ATR spectroscopy with higher values for the linear polyurethane with the highest hard segment content (0.88) and lower values for the cross-linked polyurethane with Tween 20

The encapsulation and release of hydrophobic drugs from polymersomes are of great importance in drug delivery. A significant challenge is to enhance the encapsulation capacity of finding better drug-polymer compatibility. Herrin, poly(trimethylene carbonate)-b-poly(ethylene glycol) (PTMC-PEG) diblock copolymers were successfully synthesized by ring opening polymerization of trimethylene carbonate using

The g-titania functional additives were prepared via thiol-ene click chemical reaction, and then the polylactic acid/g-titania nanofiber membrane was prepared via electrospinning technology. Characterization via scanning electron microscopy and nitrogen adsorption/desorption showed that the average fiber diameter of the TP4 fiber membrane was 489 nm, the specific surface area was 34.69 m2·g−1, and

Thermoplastic vulcanizates (TPVs), with a combination of excellent resilience of conventional elastomer and re-processibility of thermoplastic, have been widely explored both in academia and industry in recent years. Herein, a new type of thermoplastic vulcanizates with good mechanical performance, excellent resistance to high temperature and oil has been successfully developed based on hydrogenated

In recent years, the use of nano-fillers in flexible polymer matrix to prepare highly flexible, stretchable, and multifunctional product has been widely studied. However, the uneven dispersion of nano-fillers in polymer matrix is an important factor hindering their performance. In this study, a method to prepare graphene nanosheets by ball milling and modification with the silane coupling agent APTES

Packer rubber cylinders in oil drilling operations must withstand high pressure, high temperature, and destruction of mediums. To ensure the long-term service time of the hydrogenated nitrile rubber (HNBR) packer rubber cylinders, it is essential to understand the aging mechanism of HNBR in different aging environments. Four HNBR with various acrylonitrile contents (ACN 17%, 21%, 34%, and 43%) were

A copolymer of pyrrole and o-aminophenol was synthesized by single step oxidative polymerization technique. Two different nanocomposites of copolymer with α-Fe2O3 and Co-α-Fe2O3 were prepared and acetone sensing property of both composites were studied at room temperature with different gas concentrations. The calculated sensitivity of the Co-α-Fe2O3 nanocomposite was 0.68 and α-Fe2O3 nanocomposite

Preparation of Fosthiazate (FTZ)-loaded microcapsules with controlled release was attempted by the interfacial polymerization using toluene diisocyanate (TDI) and triethylenetetramine (TETA) as monomers. The effects of the monomer concentration and the monomer concentration ratio on characteristics of the microcapsules such as size, shell thickness and release behavior in water and in soil were studied

Scaffolds have similar functions to the extracellular matrix and are an important component of tissue engineering techniques. Poly(l-lactic acid) (PLLA) is one of the scaffolding materials used in this field. The aim of this study was to investigate the biocompatibility and effect of novel PLLA scaffolds on mesenchymal stem cell (MSC) proliferation. PLLA scaffolds in this study were nanonodular porous

Acid gas, as a kind of polluting gas, poses a great threat to human health. Therefore, there is a need for a material that can detect it, and it is of great significance to find and deal with acid gas leakage in time. In this paper, the fluorescent micromolecule NAP-OH, a naphthalimide derivative modified by morpholine, was introduced into polyurethane as an end-capping agent, and the prepared nanometer

So far, discussions on the effects of elements on flame retardant properties have been widespread in flame retardant-related fields, but reports on the effects of specific structures on flame retardant properties are rare. In this work, two novel phosphorus-nitrogen flame retardants were synthesized from diphenylphosphinyl chloride and diphenyl chlorophosphite. It was proved that the POC structure

Morphological evolutions during the production of microfibrillar composites can be investigated by considering two main steps: (1) the melt blending in the extruder and (2) the drawing process. Deformation, coalescence and break-up of dispersed phase droplets under shear and elongational flow fields applied in these two main steps lead to the formation of fibrillar morphology. Therefore, it can be

Multifunctional wound dressings deliver numerous complementary therapeutics in a single, easy-to-use material; however, incompatibilities between additives and the inability to control spatial loading (i.e., surface vs. bulk) sometimes complicate material design and inhibit the use of all available beneficial additives. 3D printing affords the capability to fabricate polymeric wound dressings in unique

In order to evaluate the influence of plasticizers on the behavior of the dielectric properties of polymers intended for the elaboration of flexible sensors, we have studied the influence of the addition of glycerol (10 wt%–40 wt%) in polyvinyl alcohol (PVA). Once processed, the PVA films were not subjected to any particular annealing and they were dried at room temperature for 24 h before being characterized

The emerging Additive manufacturing technologies are being adopted by different industries, which require developing new materials and procedures. Here we report the development of polypropylene (PP) based composite materials for fused filament fabrication (FFF) process with the aim of enabling fully automatic robotic repair application of plastic components in automotive industry. A key challenge

Uniaxially stretched poly(l-lactide) (US-PLA) films display shear piezoelectric properties of interests for smart applications. However, the measurement of these properties is quite challenging and a simple technique based on bimorph cantilevers is here used. This technique is validated with commercial piezoelectric poly(vinylidene fluoride) (PVDF) films. A piezoelectric coefficient d31 close to 19 pm/V

In the last years, the rising temperature caused by global warming brought the research to find new efficient solutions to lower the temperature of buildings and reduce the consumption of electrical energy for air conditioning. In this work, we propose the combined use of organic and inorganic near-infrared (NIR) reflective additives in low-density polyethylene (PE) films as an accessible plastic coating

In order to reduce the emission of smoke and toxic gases during the combustion of epoxy resin (EP), inspired by the structure of “flowers after rain,” a novel low-cost flame retardant (FMH@ZHS) was prepared by using flower-like magnesium hydroxide (FMH) as the flower and zinc hydroxystannate (ZHS) as the raindrop. The tensile strength of EP/3FMH@ZHS increased by 13.7% compared with EP/3FMH. Moreover

Flexible and electrically conductive polymer nanocomposite materials are gaining popularity as EMI shield materials. Herein, we report the successful fabrication of Thermoplastic polyurethane (TPU)/polybutylene adipate-co-terephthalate (PBAT)/dodecyl amine modified multi-walled carbon nanotubes (MWCNT)-based biodegradable polymer nanocomposite films employing solvent mixing and casting technique. The

In this work, a series of multi-component intumescent PBS formulations were elaborated by the combination of intumescent flame retardant (IFR) system (consisting of ethylenediamine phosphate and melamine poly(aluminum phosphate), 7:3, wt:wt) and synergists. Three boron/zinc-containing compounds (i.e., melamine borate, zinc oxide, zinc carbonate) were examined as potential synergists to improve the

Nanoparticles of zinc oxide (ZnO), polyhedral oligomeric silsesquioxane (POSS), and their hybrids were added to polylactic acid (PLA) using solution casting process at different weight percentages of the nanoparticles (1, 3, and 5 wt%) to form developed nanocomposites for food packaging applications. According to FTIR and XRD studies, both nanoparticles displayed fair chemical interactions with the

Carboxylated nitrile rubber (XNBR) is crosslinked via metal–ligand coordination bond by simple mixing and compounding as an alternate to chemically rich traditional vulcanization route. Basis of the generation of reversible non-covalent crosslinks, in the rubber matrix, is copper (I)–carboxylate metal–ligand interaction that is evidenced by XPS, FTIR, and rheological studies. At low copper content

Poly[4-((4-vinylbenzyl)oxy) phthalonitrile-co-methyl methacrylate] [P(VBOPN10.7%-co-MMA)] was prepared by atom transfer radical polymerization (ATRP) method at 110°C. Green colored single chain polymer molecule via intramolecular formation of zinc phthalocyanine (SCP-ZnPc) on polymer chain was synthesized using VBOPN as a precursor copolymer under conditions of dilute cyclohexanol and at 140–150°C

Degradable polyester elastomers are highly desirable for biomedical applications. Here, highly transparent and degradable aliphatic polyester elastomers were prepared using the ring-opening copolymerization (ROCP) of commercial monomers, followed by a photo-crosslinking process. A series of the semi-crystalline copolyester (PMBL-co-PBL-co-PCL) precursors with different molecular weights and pendent

Glass fibers (GFs) reinforced polymer composites display high mechanical performance but deteriorated flame retardancy due to the “candlewick effect” caused by fibers. To solve this problem, novel hierarchal hybrid glass fibers (GF@HBPPA@GO) were prepared by multistep coating of 3-aminopropyltriethoxysilane (APTES), hyperbranched polyphosphoramide (HBPPA) and graphene oxide (GO) in sequence. Several

A difuran bio-based benzoxazine (SA-dfda) was synthesized by a three-stage process from difurandiamine (DFDA) and 2-hydroxybenzaldehyde with a final yield of 90%. Three copolymer systems were prepared by blending the difuran bio-resin with epoxy resin (DGEBA), conventional benzoxazine (BA-a), and polysiloxane-based benzoxazine precursor [Pr(BA-3aptms)] at different ratios. In order to study the effect

Protection of metal surfaces from corrosion by environmentally friendly coating is found to be an interesting and useful research topic. In this milieu, the authors presented an environment friendly bio-based waterborne polyester thermoset as an anticorrosive organic coating. The polyesters comprise renewable resource based citric acid, dimer acid and glycerol along with citric acid functionalized

In this study, for the first time, we used cyclohexane dicarboxylic anhydride (CH) as the third monomer to terpolymerize with carbon dioxide (CO2) and propylene oxide (PO) under the catalysis of zinc glutarate (ZnGA). Incorporating cis-CH (C-CH) and trans-CH (T-CH) into poly(propylene carbonate) (PPC) improved the thermal and mechanical properties and increased the polymer molecular weight and yield

Coaxial electrospinning is an effective technique to produce core-shell fibers. Nevertheless, it is unable to realize accurate positioning of the fibers in two dimensions which limits its use in the field of high oriented and aligned structures over large area such as flexible tactile sensors. Here, we introduce the Mechano-electrospinning, in which drawing force coming from moving substrate and electric

A simple, environmentally friendly process was developed for surface hydrophobization of cellulose-rich waste to improve their compatibility with recycled polypropylene (rPP), helping reduce costs while recycling environmentally problematic waste such as solid olive waste (also called olive pomace). In this study, an improvement of the interfacial bonding strength between the hydrophilic waste particles

In the present study, paclitaxel (PTX), multi-walled carbon nanotubes (MWCNTs), and doxorubicin (DOX) have been simultaneously doped into the poly(ϵ-caprolactone) (PCL)/chitosan/zein core-shell nanofibers to increase its cytotoxicity for MCF-7 breast cancers killing. The physico-chemical properties of synthesized nanofibers were determined by scanning electron microscope, Fourier-transform infrared

Wound healing has always been a great challenge throughout human history. Today, with a substantial rise in chronic diseases and surgical operations, there is more demand for wound dressings to facilitate the healing process. Modern dressings come in different forms and offer significant advantages over the traditionally used passive bandages by inhibiting microbial activity and providing a suitable

In the present paper, biodegradable hybrid hydrogels were prepared by using chitosan as a natural polymer and polyurethane containing azomethine as a synthetic polymer for the drug delivery application for 5-fluorouracil. The fabricated hydrogels were characterized via FT-IR and SEM analysis. Besides, the thermal, mechanical, and wettability properties, water uptake, biodegradation, protein absorption

The preparation of smart sensors with multiple sensory systems, reusable property, and high sensitivity remains a challenge. Here, inspired by a sponge, we develop a multisensory PCA–poly(vinyl alcohol) (PVA)/borax–LiCl hydrogel (named PPL hydrogel) with low cost and simple fabrication process using sodium polyacrylate (PAAS), PVA, and lithium chloride (LiCl) to address this challenge. PPL hydrogel