JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Xinyong Su,Jinwei Wang,Caiyuan Zheng,Xueguo Li
Fast UV-cured Polybutadiene films were prepared in 10 s by using mercaptan pentaerythritol tetra(3-mercaptopropionate) (PETMP) as the cross-linker and PETMP-treated nano-SiO 2 as the filler, achieving significant improvements in overall performance, which may be applied as insulating materials for flexible printed circuits. The dispersion of SiO 2 in the polymer matrix was improved after treatment by PETMP and served as a “hard core” in enhancing their hardness greatly and improving the tensile strength about 50% from 7.5 to 15.2 MPa; they still retain excellent flexibility, maintaining shapes without cracking and peeling while folding in half under squeezing. The thermal expansion coefficient decreased from 2.22 × 10 −4 /°C to 2.02 × 10 −4 /°C and the glass transition temperature rose from 47.50°C to 58.62°C; meanwhile, they exhibited higher decomposing temperatures and higher residues, indicating the stabilizing effect of nano fillers. The incorporation of SiO 2 decreased their dielectric constant from 3.12 to 2.94 while maintaining stable dielectric loss of less than 0.02. Moreover, the addition of pretreated SiO 2 also improved their resistance to pure and salt water. Nevertheless, the excessive addition of SiO 2 led to local aggregations and thus adversely affected their overall properties if its addition was above 8% as seen from SEM pictures.
研究领域:
材料科学
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高分子化学
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柔性电子学
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介电材料
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纳米复合材料
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Meixue Song,Chunyue Zhang,Xuanle Lv,Qingquan Wei,Junyu Lin,Yapeng Wang,Zheng Wang,Dan Meng,Feng Zhang
A dual-surfactant modification strategy was developed to synergistically enhance the flame retardancy and smoke suppression of epoxy resin (EP) by co-modifying Mg-Al layered double hydroxide (LDH) with sodium dodecyl sulfate (SDS) and sodium dodecylbenzene sulfonate (SDBS). This dual-surfactant approach is novel as it integrates two distinct functionalities—linear alkyl chain compatibility provided by SDS and aromatic sulfonate-induced charring contributed by SDBS—resulting in a synergistic improvement in LDH dispersion, interfacial bonding, and catalytic char formation, thereby achieving superior fire safety performance in EP composites. The modified SDS + SDBS-LDH was synthesized via a green ion-exchange route and uniformly dispersed in EP at a loading of 5 wt%. In cone calorimeter tests, total heat release and total smoke production decreased by 33.3% and 22.9%, respectively, while CO and CO 2 release rates dropped by 75.8% and 48.7% compared with pure EP. When applied as a coating, EP/5SDS + SDBS-LDH reduced the back-surface temperature of wood by 76.1%, demonstrating excellent thermal insulation and practical potential. This work provides a scalable and eco-friendly strategy for designing high-performance, flame-retardant epoxy composites through synergistic dual-surfactant modification of LDH.
研究领域:
材料科学
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聚合物复合材料
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火灾安全工程
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纳米材料
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阻燃材料
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Ye Niu,XinYi Du,SiYu Ma,Huan Zhang,XianXing Meng,Shuo Wang
The development of green and environmentally friendly flame retardant materials has attracted widespread attention in modern architecture. In this work, a kind of novel aerogel was prepared by the incorporation of Al(OH) 3 coated hollow glass microspheres (HGM) into konjac glucomannan (KGM) matrix and then cross-linking by CaCl 2 (abbreviated as KGM-HGM-Al(OH) 3 ). The prepared KGM-HGM-Al(OH) 3 aerogel exhibits a porous structure with a high porosity of 93.93%, endowing it with excellent thermal insulation performance. In addition, it exhibits excellent thermal stability, and the mass loss of KGM-HGM-Al(OH) 3 aerogels is 37.6% at 800°C. More importantly, the aerogel shows excellent flame retardancy, with the peak heat release rate (pHRR) and total heat release (THR) of 21.43 kW m −2 and 1.895 kJ m −2 , respectively. Furthermore, the limiting oxygen index (LOI) is 54.5%; this superior performance is primarily attributed to the synergistic effect of HGM-Al(OH) 3 . The hollow structure of the hollow glass microspheres effectively delays the internal heat transfer, Al(OH) 3 decomposes endothermically at high temperatures to form an Al 2 O 3 barrier layer, while releasing water vapor to dilute combustible gas, so that the KGM-HGM-Al(OH) 3 aerogel has excellent flame retardancy. The aerogel material has the advantages of low cost and a simple preparation method, and has extensive application value in the fields of building fire resistance and battery fire resistance.
研究领域:
材料科学
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消防安全工程
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聚合物纳米复合材料
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可持续建筑材料
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Leyang Deng,Yongqiang Lan,Jingru Lv,Jiaxing Chen,Yanhong Zhang,Ping Peng
This study reports the development of ethanol-selective composite membranes for pervaporation (PV) based on polydimethylsiloxane (PDMS) embedded with reduced graphene oxide@silica core-shell (GSCS) particles. To enhance interfacial compatibility and particle dispersion within the matrix, 1H,1H,2H,2H-perfluorodecyltriethoxysilane (FDTS) was immobilized onto the GSCS to entangle with PDMS chains. A pre-polymerization strategy was adopted to increase the viscosity of the casting suspension, facilitating higher filler loading and improved ethanol separation performance. Optimal separation performance was achieved with a casting solution viscosity of 4 Pa s, yielding a maximum selectivity of 3.94. The scanning electron microscope (SEM) confirmed the formation of smooth defect-free PDMS/FDTS-GSCS composite membranes. The PV testing of these membranes demonstrated a high separation factor of 11.03 and a permeation flux of 242 g m −2 h −1 for separating a 10 wt% ethanol/water mixture at 40°C. Critically, the composite membranes exhibited excellent operational stability over a continuous 168-h test period. These findings indicate that incorporating FDTS-modified GSCS into PDMS significantly enhances ethanol selectivity, highlighting the potential of these membranes for bioethanol recovery applications.
研究领域:
材料科学
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膜技术
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化学工程
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分离过程
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纳米复合材料
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Fangya Zhang,Yifei Pei,Jie Hu,Qiyang Wang,Manqing Yan
Conductive hydrogels are promising for flexible wearable sensors due to their flexibility, conductivity, and sensing capabilities. Herein, a multifunctional polyvinyl alcohol/4-carboxyphenylboronic acid/carboxymethyl cellulose@polyaniline hydrogel is fabricated by embedding spherical carboxymethyl cellulose@polyaniline microspheres into a PVA/4-carboxyphenylboronic acid hydrogel. The synergistic effect of borate and hydrogen bonds forms a dynamic dual-crosslinking network, endowing the hydrogel with high tensile strength (0.31 MPa), excellent stretchability (1415%), fast self-healing ability, and good conductivity (3.57 S m −1 ). Notably, the engineered hydrogel is assembled as a dual-responsive sensor, exhibiting strain and temperature sensing for wearable electronics and healthcare monitoring applications. As a strain sensor, it showed good sensitivity (gauge factor: 1.88), fast response/recovery time (about 200 ms), and cyclic stability, allowing accurate detection of joint movements and facial expressions. As a temperature sensor, its temperature-sensing capability relies on the synergistic effect of the dynamic rearrangement of borate (B O C) bonds and hydrogen bonds, PANI's temperature-dependent conductivity, and ionic mobility. Thus, it exhibits a negative temperature coefficient of resistance (TCR = −1.52%/°C) in the temperature range of 20°C–60°C, enabling continuous body temperature monitoring and detection of febrile states. This work provides a general strategy for self-healing dual-responsive sensor hydrogels for wearable electronics in healthcare and human-robot interfaces.
研究领域:
材料科学
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柔性电子学
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可穿戴传感器
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生物医学工程
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智能材料
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高分子化学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Bozhen Wu,Xuejiao Song,Yongkang Meng,Yanghua Song,Zhongpu Shi,Yan Liu
Advances in electronic device miniaturization and system integration, alongside rapid progress in wireless communication technologies, have significantly amplified electromagnetic interference problems. This development necessitates the creation of high-performance electromagnetic shielding materials. This study presents a new design for electromagnetic shielding composites comprising an asymmetric structure of cobalt-coated nylon 6 microspheres (PA6@Co), silver nanowires (AgNWs) and poly(vinylidene fluoride) (PVDF). Specifically, PA6 microspheres were prepared using anionic reaction-induced phase separation, and cobalt was plated on their surfaces, thereby forming magnetic PA6@Co microspheres. The magnetic saturation intensity of these microspheres can reach 80 emu/g. The asymmetric PA6@Co/AgNWs/PVDF electromagnetic shielding composites with absorption-dominant characteristics were constructed using AgNWs as the conductive filler and PVDF as the matrix. The results show that within the X-band (8.2–12.4 GHz) range, the PA6@Co/AgNWs/PVDF composite material exhibits excellent electromagnetic shielding performance. Its maximum electromagnetic shielding efficiency (SET) reaches 48.1 dB, and the absorption coefficient (A) is 0.8, demonstrating a distinct absorption-dominant shielding characteristic. This asymmetric structural design strategy solves the limitations of traditional shielding materials and provides a new approach to developing environmentally friendly, efficient electromagnetic shielding materials.
研究领域:
材料科学
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电磁功能材料
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纳米复合材料
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聚合物复合材料
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Q. Xu,C. B. Zhang,L. J. Wei,Y. X. Li,W. L. Liang,F. J. Jing,Y. X. Leng
Ureteral stents are employed to relieve ureteral stenosis, but they face challenges including high friction that causes endothelial damage, microbial colonization, and encrustation. The long-term use of ureteral stents usually leads to pain, increased urinary frequency, and even secondary surgery. To address these issues, ureteral stents require lubricating antifouling surfaces to reduce tissue damage, bacterial infection and encrustation. Herein, we report an antifouling and lubricating hydrophilic coating based on the zwitterionic polymer poly(sulfobetaine methacrylate-acrylic acid) (poly(SBMA-AA)) prepared using UV-initiated polymerization. Controlled monomer feed ratios were used to study the antimicrobial and anti-encrustation capacities. The poly(SBMA-AA) coatings were hydrophilic, which facilitated the formation of a hydrated layer, thereby reducing friction. The friction test revealed that the coatings could achieve an initial friction coefficient as low as 0.023. After 15 days of immersion in artificial urine, the coefficient of friction remained stable at approximately 0.027, indicating its long-term lubricity and potential to reduce tissue damage. Furthermore, as the AA monomer molar ratio increased, the coatings exhibited enhanced antibacterial adhesion, and demonstrated superior anti-encrustation performance in a 30-day urinary crystallization model. This study proposes a novel approach for developing multifunctional ureteral stent coatings that integrate long-term lubrication, antibacterial adhesion activity, and anti-encrustation capabilities.
研究领域:
生物医学工程
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泌尿学
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聚合物科学
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表面涂层
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生物材料
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Yingqiu Wang,Zenghui Qian,Mingzhu Zhou,Guodong Jiang,Yucai Shen
This study developed a highly conductive polyaniline (PANI) composite film. The synthesis involved first reacting epichlorohydrin (ECIP) with hydroxyl groups on hydroxypropyl methylcellulose (HMPC), creating reactive sites. Subsequently, aniline (An) was grafted onto the HMPC backbone via ECIP bridging, followed by oxidative polymerization to yield polyaniline grafted hydroxypropyl methylcellulose (PANI-g-HMPC). Further internal doping of the PANI was achieved by grafting 3-chloro-2-hydroxypropyltrimethylammonium chloride (QA) onto PANI-g-HMPC. This approach effectively overcame critical defects of conventional PANI, including poor stability and film-forming ability, low film strength, poor PANI dispersion in composite films, and low conductivity etc. Furthermore, this work introduces, for the first time, the use of glutaraldehyde (GA) to address the hygroscopicity of PANI-g-QA/HMPC film by aldol reaction to consume hydroxyl groups of HMPC, successfully preparing a hydrophobic PANI-g-QA/HMPC/GA composite film. The optimized composite film exhibits a high conductivity of 1.582 S/cm and a tensile strength of 120 MPa, approximately double that of the typical in situ polymerized PANI composite films. The resulting PANI-g-QA/HMPC/GA composite film holds broad application prospects in fields such as conductive films, conductive coatings, conductive paste et al.
研究领域:
材料科学
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高分子化学
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导电聚合物
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功能材料
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薄膜技术
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·Vol. 142
·期 30
·e57224
·
IF 2.8
Wenxi Liao,Chaofan Du,Luxin Li,Daiyi Wang,Yujian Wu,Jiansong Luo,Jiajia Deng,Yanyan Huang,Pan Wang,Yuxin Yang
Solar-powered interfacial evaporation technology is seen as a potential way to alleviate the crisis of water scarcity through seawater desalination. The key to the success of this technology hinges upon the efficient conversion of solar energy into heat energy, which is intimately connected with the innovative development of composite photothermal membranes. In this study, polyaniline (PANI) with excellent light absorption and carbon black (CB) with good stability were added to the polymer material polyaryl ether nitrile (PEN), and the PANI/CB-PEN nanofiber membrane was prepared by electrospinning blending. Due to the good stability of PEN polymer, the solar evaporator has excellent salt resistance and stability. The results show that the fiber membrane has the best light absorption effect when the reaction time is 80 min and the CB content is 50.0%. The composite fiber membrane temperature can reach 68.6°C, the evaporation rate is 1.51 kg m −2 h −1 , while the evaporation rate is 1.38 kg m −2 h −1 in a 3.5% NaCl brine. The photothermal conversion efficiency was 94.17%. The PANI/CB-PEN nanofiber membrane-based interfacial evaporation device demonstrates sustained performance in repeated tests, showing promising potential for long-term, scalable solar-powered seawater desalination applications.
研究领域:
材料科学
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可再生能源
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环境工程
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纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Yang Sui,Peng Wei,Kunhang Yan,Chuanbo Cong,Xiaoyu Meng,Zhichao Yang,Pengpeng Bai,Yu Tian,Qiong Zhou
The entanglement degree of ultra-high molecular weight polyethylene (UHMWPE) exhibits an inverse correlation with its rheological properties and wear resistance, creating a fundamental challenge in simultaneously enhancing melt processability while preserving superior anti-wear performance. The fabrication of polymer nanocomposites with reasonable structure is expected to solve this intractable problem. Graphene has excellent wear resistance and can reduce the viscosity of polymers. Therefore, we prepared a series of UHMWPE/Graphene composites in this paper. The effects of graphene on the microstructure, rheological behavior, crystallization behavior, and wear resistance of UHMWPE were investigated by transmission electron microscopy, small-angle x-ray scattering, dynamic mechanical analysis, and differential scanning calorimeter characterization methods, and hence the rheological and wear mechanisms of the composites were analyzed. The results show the optimized composite with 0.4 wt% graphene demonstrates remarkable performance synergies: a 68% reduction in complex viscosity and a 4.5-fold enhancement in wear resistance (the specific wear rate decreased from 2.45 × 10 −4 to 0.56 × 10 −4 mm 3 /N m). This work establishes a materials design paradigm for overcoming the intrinsic property trade-offs in UHMWPE, particularly relevant for applications demanding both processability and durability.
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Kuiling Wei,Xuejuan Cao,Yan Wu,Xiaoyu Yang,Boming Tang,Tianqiang Jiang
Recycling thermosets is essential for environmental protection and the sustainable development of a circular economy. Among various approaches, dynamic chemistry has proven to be an effective solution for recycling thermosetting polymers. To improve the sustainability of thermosetting polyurethanes and investigate their thermoreversible behavior with different combinations of disulfide bonds and Diels–Alder bonds, this study developed castor oil-based polyurethane vitrimer (Co-PUV 1/Co-PUV 2/Co-PUV 3) with varying dynamic covalent networks. The chemical structure, dynamic reversible reactions, rheological characteristics, and thermal-responsive self-healing were analyzed. The results revealed that disulfide bonds, combined with Diels–Alder bonds, can significantly enhance the thermoreversible response of the crosslinked networks. The first-rank combination was found in Co-PUV 2, which contained Diels–Alder bonds and 4.22 mol% disulfide bonds. This sample exhibited the shortest stress relaxation time and the largest creep range between 60°C and 100°C. Additionally, Co-PUV 2 achieved an 84.4% recovery rate of mechanical properties at 85°C and 0.3 MPa and regained its melt-recyclability at 135°C. In general, this work provides insights into the influence of disulfide and Diels–Alder bonds on the thermoreversible behavior of castor oil-based polyurethane vitrimer, enlightening a foundation for the design of recyclable polyurethane using a multi-dynamic bond strategy.
研究领域:
高分子科学
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材料化学
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可持续材料
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动态共价化学
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回收技术
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Jinzheng Zhang,Xiaoyu Lei,Jiajing Tang,Qing Zhao,Li Li,Jinlun Feng,Yubao Li,Yi Zuo
To address the challenges associated with bone cement curing in the presence of bleeding, a moisture-tolerant polyurethane-based cement was developed, demonstrating gender-specific therapeutic efficacy when repairing osteoporotic bone defects. The synthesized cements (PHE-1, PHE-2, and PHE-3) incorporated osteoinductive nano-hydroxyapatite (20 wt%) and varying concentrations of enoxacin (EN, 1–3 wt%) as an osteoclast inhibitor. These formulations exhibited moderate curing temperatures (36.8°C–40.7°C), maintained mechanical stability in the presence of blood, and achieved 99% monomer conversion within 240 min via moisture-triggered –NCO reactions. In vitro evaluations showed that PHE-2 effectively inhibited osteoclastogenesis in RAW 264.7 cells while simultaneously promoting osteogenic differentiation in bone marrow-derived mesenchymal stem cells. In vivo studies revealed more efficacious bone healing in ovariectomized rats compared to orchiectomized rats after 8 weeks of implantation. This difference was attributed to estrogen deficiency accelerating the degradation of the bone organic matrix, whereas androgen deficiency impaired biomineralization processes. Further mechanistic analysis indicated that gender-specific differences in bone turnover result from the enhanced matrix degradation induced by estrogen deficiency. Notably, PHE-2 effectively mitigated matrix-related pathologies associated with ovariectomies. This study highlights the importance of gender-specific approaches in managing osteoporotic bone defects and underscores the therapeutic potential of EN-loaded polyurethane cement for treating osteoporotic defects.
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DOI
高影响因子
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