JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·Vol. 142
·期 18
·e56826
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IF 2.8
Xiaohui He,Zengwei Qin,Defu Chen
Solid polyelectrolytes (SPEs) have garnered considerable attention and extensive research due to their exceptional flexibility, low cost, and ease of industrial production. This study synthesized bis-imidazole cationic functionalized benzonorbornadiene block copolymers rP(NB-MGE- b -BenzoNBD-BisIm + TFSI − ) via ring-opening metathesis polymerization (ROMP). The block copolymers were blended with lithium trifluoromethanesulfonate (LiTFSI) and nano SiO 2 to prepare the composite solid polyelectrolytes membrane (CSPEMs) rP(NB-MGE- b -BenzoNBD-BisIm + TFSI − )/LiTFSI/SiO 2 by a solution casting method for applications in lithium-ion batteries (LIBs). This research investigates the effect of different nano-SiO 2 content on the ionic conductivity and electrochemical stability of the composite SPEs. The relationship between the intrinsic structure and properties of rP(NB-MGE- b -BenzoNBD-BisIm + TFSI − )/LiTFSI/z wt% SiO 2 ( z = 0, 2.5, 5.0, 7.5) was studied. When the SiO 2 content is 5.0 wt%, the maximum ionic conductivity reaches 9.3 × 10 −5 S cm −1 at 30°C and 1.5 × 10 −3 S cm −1 at 80°C. The NCM811/CSPEM/Li battery exhibits an initial reversible discharge capacity of 149.7 mAh g −1 at a current density of 0.2 C, with a coulombic efficiency maintained above 96%. After 50 cycles at a current density of 0.2 C, the capacity remains at 148.9 ± 8 mAh g −1 , with the coulombic efficiency continuing to exceed 96%, which demonstrating robust cycling stability.
研究领域:
材料科学
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高分子化学
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储能技术
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电化学
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锂离子电池
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Shu Qiu,Siwen Zhang,YiJing He,Ting Li,Yingshu Feng,Jicheng Xu
An ideal wound dressing requires a scaffold with extracellular matrix-mimicking fiber structure and elastic properties, which can influence cellular functions and tissue regeneration. This study presents a novel strategy to fabricate silk fibroin (SF) hydrogel fibers that combine hydrogel softness with electrospun fiber structural advantages through electrospinning and UV photo-crosslinking. RSF modified with glycidyl methacrylate (RSF-GMA) was prepared and electrospun with optimized parameters (21 kV voltage, 12 μL/min extrusion rate), followed by UV photo-crosslinking (365 nm, 5 min). The resulting hydrogel fiber membranes exhibited excellent structural stability and multifunctional properties. Mechanical strength analysis showed wet-state fracture strain of 56.1%, approximately 11 times higher than the dry state (5.1%). The hydrogel fiber membrane achieves sustained effective drug release over 144 h. In vitro degradation tests show 62% mass loss after 7 days in α-chymotrypsin solution, while maintaining structural integrity in PBS. The membrane loaded with streptomycin maintains antibacterial activity against Escherichia coli for 36 h. The UV photo-crosslinking strategy successfully imparts hydrogel properties and structural stability, while optimized parameters ensure uniform fiber distribution. These findings demonstrate that the prepared RSF hydrogel fiber membranes show significant potential as multifunctional biomaterials for wound dressings, drug delivery, and tissue engineering applications.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Wencong Li,Wei Qi,Yuhan Ma,Yan Zhong,Xin Sun,Shijie Xue,Xinyu Luo,Haibao Zhang,Xiaoxiao Li,Yanyan Liu,Jun Sun,Qianghui Xu,Jun Shen,Lin Chen,Xingyou Tian
The phase change thermal management technology using solid–liquid phase change materials (PCMs) is the core technology for solving the problem of mismatch in the time, space and intensity of heat loads. The incorporation of graphene nanoparticles (GNPs) has been shown to enhance the heat transfer performance of PCMs. This study investigated the effects of polymer dispersants, specifically polyisobutylene succinimide (PIBSI), on the stability and thermal properties of nanocomposite phase-change material (NePCMs) made from GNPs and n -eicosane, a typical alkane PCM. The results indicate that the PIBSI dispersants, specifically the high molecular weight bispolyisobutylene succinimide T161, exhibit an excellent dispersion stability effect for GNPs in n -eicosane and are more effective than other types of dispersants. The dispersants primarily act through steric hindrance to disperse the GNPs in the non-polar alkane PCMs. Analysis of thermal conductivity revealed that greater stability of dispersion in the NePCMs correlates with higher thermal conductivity. However, using too much dispersant can reduce the thermal conductivity of NePCMs. The addition of dispersants into the NePCMs may lead to a decrease in total phase change enthalpy, attributable to the volume occupied by the dispersants within the NePCMs.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Tiandong Zhang,Tangman Xue,Xinle Zhang,Chao Yin,Changhai Zhang,Qingguo Chi
To meet the demand for high-temperature application requirements of encapsulation materials for third-generation wide-band semiconductors, a synergistic strategy was adopted in this study to improve the thermal resistance and thermal conductivity of epoxy resins through molecular structure design, filler compounding and interfacial modulation. Through the copolymerisation reaction of o-cresol novolac epoxy resin (EOCN) and cyanate ester (CE) to construct a rigid crosslinked network based on a triazine structure, the thermal decomposition temperature ( T 5% ) and glass transition temperature ( T g ) of the epoxy copolymer are enhanced to 431°C and 265°C, respectively, when the CE content reaches 60 mol%, which represents increases of 55.6% and 33.2%, respectively, compared to the common epoxy/methyl hexahydrophthalic anhydride (EOCN/MHHPA) system. In addition, the doping of SiO 2 fillers in the epoxy copolymer can effectively improve its thermal conductivity. The optimal SiO 2 particle size compounding ratio and surface coupling agent type were confirmed through orthogonal experimental results, which enabled the composites to achieve a significantly improved thermal conductivity of 0.632 W/(m K) while maintaining excellent thermal resistance ( T g of 266°C) and insulation (breakdown strength of 46.4 kV/mm), showing great potential to be used as epoxy mold compound (EMC) in the fields of high-temperature electronic packaging.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Yu Liu,Yang Shen,Shusu Shen,Xiaoji Zhou,Ji Ma,Zhenfeng Lin,Yongfu Guo
MOFs (metal-organic frameworks) have been widely applied in membrane modifications. In this study, a polyvinylidene fluoride (PVDF) membrane substrate was initially functionalized with one typical MOF, UiO-66-NH 2 , through simple vacuum filtration, followed by the deposition of a trace amount of perfluorohexane (PFHx) sulfonate potassium, successfully preparing a novel composite membrane named UxP1. Incorporating UiO-66-NH 2 onto the hydrophobic PVDF significantly enhances both hydrophilicity and porosity. The trace deposition of PFHx introduced F groups, enhancing the oil-repellent properties of the membrane. The WCA of the U5P1 membrane (5 mg of UiO-66-NH 2 and 1 mg of PFHx) decreased from 68.4° to 25.4°, while the underwater oil contact angle (UWOCA) increased from 139.5° to 150.5°, resulting in a superhydrophilic and oleophobic surface. In oil–water emulsion separation experiments, U5P1 achieved an oil removal rate > 99% at an operating pressure of 0.085 MPa. In filtering wastewater containing Congo Red (CR) dye, the membrane exhibited a rejection > 99% and an impressive permeation flux of 1520 L m −2 h −1 , highlighting its outstanding separation efficiency. Moreover, during cyclic filtration experiments, U5P1 consistently maintained > 95% rejection at 0.085 MPa, and the FRR remained > 81%, demonstrating exceptional fouling resistance and rejection capabilities. This work provides a good basis for the advanced development of MOFs-modified membranes into efficient practical water treatment.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·Vol. 142
·期 41
·e57591
·
IF 2.8
Kang Zhu,Yong Li,Yue Jin,Hao Liu,Jun Xiao
In situ polymerized poly(methyl methacrylate) resin, a liquid molding thermoplastic, offers advantages such as low cost, recyclability, and environmental friendliness. However, its poor toughness limits its application potential. This study proposes a toughening method for poly(methyl methacrylate) resin used in liquid molding by copolymerizing it with butyl acrylate (BA) and butyl methacrylate (BMA) monomers. The effects of BA or BMA on the polymerization reaction and mechanical properties were investigated, with a focus on improving toughness. Dynamic thermal analysis (DSC) and 13 C NMR spectroscopy confirmed the formation of copolymers and the incorporation of BA or BMA monomers. The introduction of BA or BMA lowered the glass transition temperature but had minimal impact on the polymerization rate, with only a slight increase in polymerization time (14.77‰ and 4.320‰ for 8% BA or BMA, respectively). Adding small amounts of BA or BMA significantly enhanced the toughness of the resin. When the content reached 4%, elongation at break increased by 103% and 139%, and impact strength improved by 222% and 328%. These results shift the failure mode from brittle to ductile fracture, paving the way for the industrial application of high-performance in situ polymerized poly(methyl methacrylate) resin.
研究领域:
材料科学
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高分子化学
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复合材料
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热塑性树脂
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高分子加工
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Mingyin Qiu,Ying Men,Zhe Lin,Lipiao Bao,Ziyu Qin,Xing Lu
The growing demand for multifunctional sensors in wearable systems has prompted the need for materials that simultaneously support gas sensing and mechanical strain detection. However, current flexible sensing materials still suffer from issues such as response hysteresis, poor humidity resistance, and lack of antibacterial properties. Herein, we developed a ternary flexible composite by integrating defect-engineered ZIF-8, conductive polypyrrole (PPY), and bacterial cellulose (BC), which was further encapsulated with polydimethylsiloxane (PDMS) to form the Def-ZIF-8/PPY/BC@PDMS composite. The results demonstrated that with 2–3 layers of PDMS, the sensor achieved a fast and stable NO 2 response (9.3% at 10 ppm), with reliable recovery. Under 80% relative humidity, PDMS reduced humidity-induced signals from 34% to 10.3%, confirming markedly improved moisture resistance. The incorporation of a PDMS layer enabled enhanced stress sensing, reducing the response/recovery times to 0.4/0.3 s from 0.9/0.8 s in the uncoated structure. The sensor demonstrated high fidelity in recognizing complex biomechanical signals such as swallowing, walking, and finger articulation. Furthermore, antibacterial testing confirmed 42.18% and 64.69% inhibition against Escherichia coli and Staphylococcus aureus , respectively. This multifunctional composite simultaneously optimizes gas sensing, mechanical flexibility, humidity resistance, and antibacterial efficacy, paving the way for advanced materials in fully integrated wearable sensing technologies.
研究领域:
材料科学
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传感器与传感技术
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可穿戴电子
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气体传感
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柔性电子学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Tao Liu
The current preparation of biomass-based hydrophobic absorbents still relies excessively on the use of fluorinated hydrophobic substances, which poses a risk of environmental pollution. This study aims to develop a sustainable and nonfluorinated method for fabricating biomass-based hydrophobic absorbents with enhanced recyclability and multifunctional surface properties. The chemical vapor deposition method based on nonfluorinated methyltrichlorosilane is used for the in situ growth of polysiloxane nanofilaments on the surface of Tong Cao (TC), resulting in the development of a TC-based hydrophobic absorbent. Upon organosilane modification, modified TC shows good hydrophobicity with a water contact angle of 93° and can be used to remove organic solvents from water. The absorption capacity of modified TC for different organic solvents is from 3.1 to 6.5 g/g. The percentage of retained absorption capacity of modified TC still remains at 98% after 10 consecutive uses, demonstrating a good recyclability. Modified TC also holds high organic solvents retention capacity as well as good self-cleaning and anti-fouling ability. These results indicate that modified TC with hydrophobicity and recyclability has potential for practical oily wastewater treatment.
研究领域:
材料科学
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环境工程
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生物质利用
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表面化学
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可持续技术
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Shanshan Gao,Dayang Yu,Pengju Pan,Yongzhong Bao
Poly(ethylene oxide) (PEO) is a promising candidate to fabricate solid polymer electrolytes (SPEs). To improve the comprehensive performances of PEO-based SPEs, vinylidene fluoride (VDF) copolymers grafted with poly(ethylene glycol) were electrospun and applied as a support for the PEO matrix. The grafting of PEG onto the VDF copolymer was achieved by the nucleophilic substitution of a chlorine atom in the VDF copolymer by methoxy-polyethylene-glycol thiol. The ionic conductivity of the VDF copolymer was increased with the grafting site density of PEG at the same bis(trifluoromethane sulfonimide) (LiTFSi) concentration. SPEs were fabricated by solution casting of PEO/LiTFSi onto electrospun VDF graft copolymer fibers. Electric field poling induces a beneficial α -to- β phase transition in the VDF copolymer, and the compatibility between the VDF copolymer and PEO was improved due to the incorporated PEG side chains, which facilitate lithium ion (Li + ) transport through additional conduction pathways and enhance lithium-ion solvation. The supported PEO SPEs exhibited good mechanical strength and toughness, and the optimized SPE with an EO/Li ratio of 6:1 exhibits excellent electrochemical performance at 60°C, including an ionic conductivity of 1.79 × 10 −4 S cm −1 , a Li + transference number of 0.49, and a wide ESW of 5.46 V (vs. Li + /Li).
研究领域:
材料科学
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聚合物化学
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储能
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电化学
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电池技术
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Xipo Zhao,Rongrong Ji,Peidong Li,Shixing Dong,Linwei Liang,Ling Zhou
This study employed a two-step approach involving melt polycondensation and chain extension to synthesize high-molecular-weight PLA. Initially, the mechanism of ring-forming side reactions during polycondensation was systematically investigated using MALDI-TOF-MS. The results demonstrated that the SnCl 2 /TSA composite catalyst effectively suppressed the formation of cyclic oligomers, and the optimal reaction conditions were determined as 180°C for 8 h. Based on these findings, HDI was chosen as an efficient chain extender. By optimizing both the molecular weight of PLA during polycondensation and the HDI content, chain-extended PLA with a molecular weight of 1.48 × 10 5 g/mol was successfully obtained. The results showed that the chain-extended product exhibited excellent overall performance. Its tensile strength (75.5 MPa) was comparable to that of commercial PLA 4032D (75.3 MPa), while its elongation at break (12.21%) slightly exceeded that of the commercial sample (11.1%). This work provides a novel strategy for the industrial production of high-performance PLA.
研究领域:
高分子科学
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材料工程
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塑料与生物材料
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Ke Liu,Qisong Liu,Rui Fan,Hongfa Huang,Hua Yi,Chao Hu
Mixed matrix membranes (MMMs) incorporating metal–organic frameworks (MOFs) as fillers show attractive selectivity and permeability for gas separation. However, the performance improvement is restricted by undesirable interfacial interaction and inhomogeneous dispersion of MOFs in the membrane matrix. In this paper, amino-functionalized UIO-66 (U6N) with high porosity was employed as a filler and further regulated by a controlled plant polyphenol-induced surface modification strategy. The process involved the formation of tannic acid-iron(III) complex (TA-Fe(III)) on the U6N surface, which improved interfacial compatibility with the polyimide matrix while introducing abundant hydroxyl groups to enhance gas transport properties. Accordingly, the modified MMMs containing 30 wt.% U6N@TA-Fe(III) achieved optimized gas separation performance. Specifically, the CO 2 permeability increased to about 2495.9 Barrer with a CO 2 /CH 4 selectivity of 19.32, which exceeded the 2008 Robeson upper limit and showed an increase of 22.1% and 25.6%, respectively, compared to the MMMs embedded with unmodified U6N. Moreover, the improved dispersion of the U6N@TA-Fe(III) within the membrane structure is conducive to improving separation performance for CO 2 /N 2 and O 2 /N 2 . Therefore, this work provides a novel insight into the rational design of the MMMs via a facile modification strategy, which can further improve the gas separation performance of the MMMs.
研究领域:
材料科学
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膜技术
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气体分离
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聚合物纳米复合材料
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金属有机框架（MOFs）
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Shixun Hu,Wangjie Zeng,Junwei Tao,Peng Zeng,Shangshi Huang,Shuaishuai Wang,Changhong Li,Qi Li,Jinliang He
Amid the global “double-carbon” initiative, melting-grafted polypropylene (PP) insulation presents a promising technical route for next-generation power cable systems due to its recyclability, satisfactory dielectric performance, and engineering practicality. However, its universality across both high-voltage alternating current (HVAC) and direct current (HVDC) systems remains to be fully assessed. In this study, we selected a mature polar grafted PP system: glycidyl methacrylate (GMA)-grafted PP, to experimentally evaluate its performance and elucidate the underlying physical mechanisms. The results demonstrate that GMA-grafted PP exhibits excellent DC dielectric performance, including a 24.6% enhancement in breakdown strength and significantly improved space charge distribution, whereas its performance under AC conditions remains unsatisfactory. The GMA-induced trapping-detrapping process is proved a key factor contributing to DC improvements, while the study also highlights that polymeric degradation during the melting grafting process, as well as the high polarity of GMA, are responsible for the unfavorable AC performance. In conclusion, 5% (weight percent) GMA-grafted PP is highly suitable for HVDC cable insulation, but the degradation associated with the melting grafting process is a crucial and urgent issue to be addressed, for the development and universality of high-capacity recyclable cable systems.
研究领域:
电气工程
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高分子科学
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电力系统
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介电与绝缘
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DOI
高影响因子
危险品化学品经营许可证（带存储）