Journal of Applied Polymer Science最新文献_第5页

Facile Preparation of AZO-Functionalized Cotton Fabrics With High Infrared Reflectance via a Conventional Pad–Dry–Cure Process 传统垫-干固化工艺制备高红外反射率偶氮功能化棉织物

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-25 DOI: 10.1002/app.71407

Yaqian Sun, Kaiyan Wang, Yuyuan Wang, Jie Min, Chengbing Yu

{"title":"Facile Preparation of AZO-Functionalized Cotton Fabrics With High Infrared Reflectance via a Conventional Pad–Dry–Cure Process","authors":"Yaqian Sun, Kaiyan Wang, Yuyuan Wang, Jie Min, Chengbing Yu","doi":"10.1002/app.71407","DOIUrl":"https://doi.org/10.1002/app.71407","url":null,"abstract":"<div>\u0000 \u0000 <p>Passive personal thermal management textiles with effective infrared (IR) shielding are highly sought after for outdoor cooling purposes. Herein, we report an application-driven paradigm utilizing aluminum-doped zinc oxide (AZO) nanoparticles on cotton knitted fabric via a conventional pad–dry–cure process. The AZO dispersions were optimized with anionic dispersant BYK-190, while polyurethane dispersion (PUD) 1087R3 was chosen as the ideal binder. Optimal conditions were identified as an AZO particle size of 100–500 nm, an AZO concentration of 7.5 wt%, and a PUD 1087R3:AZO mass ratio of 1:1. The resulting AZO-finished cotton fabric demonstrated a high IR reflectance of about 80%, achieved primarily through free-carrier plasma reflection of AZO nanoparticles. As a result, the fabric's surface temperature decreased by 11.4°C under an IR lamp and, importantly, by 4.4°C under direct summer sunlight compared to unfinished cotton knitted fabric. Additionally, the fabric retained excellent wearability. This study offers a straightforward, scalable, and effective approach for developing high-efficiency cooling textiles, with significant potential for applications in summer outdoor wearables and personal thermal management systems.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and High-Temperature Stabilization Mechanism of Quaternary Copolymer Suspension Stabilizer for Cementing Spacer Fluid 固井隔离液四系共聚物悬浮稳定剂的制备及其高温稳定机理

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-27 DOI: 10.1002/app.71401

Fuyun Wang, Quan Cao, Yao Wang, Simeng Liu, Jun Zhao, Zhifan Yang, Shuran Duan, Ming Li

{"title":"Preparation and High-Temperature Stabilization Mechanism of Quaternary Copolymer Suspension Stabilizer for Cementing Spacer Fluid","authors":"Fuyun Wang, Quan Cao, Yao Wang, Simeng Liu, Jun Zhao, Zhifan Yang, Shuran Duan, Ming Li","doi":"10.1002/app.71401","DOIUrl":"https://doi.org/10.1002/app.71401","url":null,"abstract":"<div>\u0000 \u0000 <p>Conventional spacer fluids fail at high temperatures in deep wells, causing sedimentation and poor cementing quality. In this study, a quaternary copolymer suspension stabilizer was synthesized via aqueous free-radical polymerization. Orthogonal tests revealed that the influence of synthesis parameters on sedimentation stability followed the order: pH > reaction temperature > initiator dosage > monomer molar ratio. The optimal conditions were determined as a monomer molar ratio of 1:1.5:0.5:0.2, a reaction temperature of 65°C, an initiator dosage of 0.1 mol%, and a pH of 5.5. The structure was verified by Fourier-transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance spectroscopy (<sup>1</sup>H-NMR). Performance evaluation shows that the stabilizer enables the spacer fluid to maintain excellent sedimentation stability at 200°C. It presents good rheological and thickening compatibility with drilling fluid and cement slurry. Mechanism analysis indicates that the stabilizer provides high-temperature stability through chemical adsorption and steric hindrance. Viscosity measurements conducted at a shear rate of 170 s<sup>−1</sup> over a temperature range of 30°C ~200°C show that the polymer solution retains 45% of its initial viscosity at 200°C, indicating that the main chain remains intact and meets the demands of deep and ultra-deep well cementing.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Copolymerization of MMA With HEMA Together With Their Transesterification to Yield Tough and Transparent PMMA 甲基丙烯酸甲酯与甲基丙烯酸甲酯共聚及其酯交换反应制备坚韧透明的聚甲基丙烯酸甲酯

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-27 DOI: 10.1002/app.71404

Jiehao Qu, Jicheng Li, Guang Yang, Nianzhao Gao, Xiangdong Liu

{"title":"Copolymerization of MMA With HEMA Together With Their Transesterification to Yield Tough and Transparent PMMA","authors":"Jiehao Qu, Jicheng Li, Guang Yang, Nianzhao Gao, Xiangdong Liu","doi":"10.1002/app.71404","DOIUrl":"https://doi.org/10.1002/app.71404","url":null,"abstract":"<div>\u0000 \u0000 <p>Poly(methyl methacrylate) (PMMA) possesses high optical transparency but suffers from insufficient mechanical strength. Most toughening methods compromise optical clarity, processability, or industrial scalability. Herein, we present a scalable toughening strategy based on copolymerization of methyl methacrylate (MMA) with 2-hydroxyethyl methacrylate (HEMA), combined with transesterification between their units. The resulting random MMA-co-HEMA copolymers retain excellent visible-light transmittance (above 90.0%, 5 mm) while achieving remarkable mechanical enhancements, including increases of 74% in tensile strength and 22% in impact strength compared with linear PMMA. Further studies reveal that the transesterification between HEMA and MMA units induces a lightly cross-linked network. This approach not only offers advantages in simplicity, cost-effectiveness, and compatibility with industrial processes such as casting molding, but also effectively prevents uncontrollable autoacceleration during bulk polymerization. These findings provide new insights for the designing of high-performance optical thermoplastics with promising potential in structural optical applications.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experiment-Driven Performance Prediction of Fused-Filament-Fabricated Shape Memory Polymer Composites With a Data-Divide-Assisted Neural Network 基于数据分割辅助神经网络的熔丝制造形状记忆聚合物复合材料实验驱动性能预测

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-27 DOI: 10.1002/app.71402

Rui Zhou, Zihan Guo, Jiayu Li, Yunteng Jiang, Hao Wu, Chunzhi Du

{"title":"Experiment-Driven Performance Prediction of Fused-Filament-Fabricated Shape Memory Polymer Composites With a Data-Divide-Assisted Neural Network","authors":"Rui Zhou, Zihan Guo, Jiayu Li, Yunteng Jiang, Hao Wu, Chunzhi Du","doi":"10.1002/app.71402","DOIUrl":"https://doi.org/10.1002/app.71402","url":null,"abstract":"<div>\u0000 \u0000 <p>Fused filament fabrication (FFF) of shape memory polymer composites (SMPCs) offers potential for aerospace applications requiring mechanical robustness and reliable shape-memory performance. However, performance-oriented process optimization remains challenging. Therefore, this study establishes an experiment-driven process-property database and develops a framework to predict tensile strength, shape fixation ratio, and shape recovery ratio. Tensile and thermomechanical data are obtained through full-factorial and orthogonal experiments, and analysis of variance is used to evaluate the effects of the experimental factors on the corresponding properties. On this basis, a data-divide-assisted genetic algorithm-optimized backpropagation neural network (DDGA-BP) is developed. The model retains the trained network and its training record obtained during genetic optimization and uses the retained network for final prediction, thereby improving prediction stability and reproducibility. To evaluate reliability and stability, DDGA-BP is compared with multiple linear regression, random forest regression, and conventional GA-BP over ten repeated carbon-content-stratified data splits. DDGA-BP achieves the highest mean <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mi>R</mi>\u0000 <mn>2</mn>\u0000 </msup>\u0000 </mrow>\u0000 </semantics></math> values of 0.836, 0.942, and 0.931 for the three properties, together with the lowest mean MAE and RMSE and lower variability than conventional GA-BP. The proposed framework enables accurate and reproducible property prediction and supports performance-oriented design of 4D-printed SMPC components.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Impact Strength and Compatibility in Epoxy/EVA Blends: Effects of EVA Functionality and Compatibilizers on Phase Behavior, Mechanical Properties, and Thermal Properties 增强环氧树脂/EVA共混物的冲击强度和相容性：EVA功能性和增容剂对相行为、机械性能和热性能的影响

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-09-17 DOI: 10.1002/app.71364

Masoud Khoshnood, Ghodratollah Hashemi Motlagh

{"title":"Enhancing Impact Strength and Compatibility in Epoxy/EVA Blends: Effects of EVA Functionality and Compatibilizers on Phase Behavior, Mechanical Properties, and Thermal Properties","authors":"Masoud Khoshnood, Ghodratollah Hashemi Motlagh","doi":"10.1002/app.71364","DOIUrl":"https://doi.org/10.1002/app.71364","url":null,"abstract":"<div>\u0000 \u0000 <p>This research focuses on toughening epoxy (EP) resins by blending with ethylene vinyl acetate (EVA) copolymer, addressing their inherent immiscibility through chemical modification. EVA was partially hydrolyzed (hEVA) to introduce hydroxyl groups and subsequently grafted with (3-glycidyloxypropyl) trimethoxysilane (GPTMS) to create silane-functionalized derivatives (gEVA and hgEVA). Materials included Diglycidyl ether of bisphenol A (DGEBA) epoxy, Jeffamine D230 curing agent, neopentyl glycol diglycidyl ether (NGDE) reactive diluent, Decylamine (DA) co-curing agent, and EVA (19% vinyl acetate). Blends were prepared via melt-mixing at 150°C, followed by co-curing. Characterization methods such as scanning electron microscopy (SEM), optical microscopy, and Fourier transform infrared (FTIR) were employed to analyze morphology, phase behavior, and chemical interactions. SEM revealed finer dispersions with modified EVAs, indicating enhanced interfacial adhesion. FTIR confirmed successful modifications and suggested new bond formations between EP and modified EVA. The study systematically investigated EP/EVA blends at varying compositions (2–10 wt% EVA, 5 wt% modified EVA) and characterized their thermal properties and mechanical performance (tensile testing). Notably, the EP/hgEVA blend demonstrated a significant increase in impact strength (~100%) while largely retaining EP's flexural and tensile strength, highlighting the effectiveness of the compatibilization strategy for advanced coating applications.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Resilience Epoxy Elastomer: Dynamic Ester Bonds Enable Reprocessing and Chemical Degradability 高弹性环氧弹性体：动态酯键使再加工和化学降解

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-23 DOI: 10.1002/app.71398

Caixia Zhao, Tian Fu, Xinyu Wu, Huici Han, Yan Lv, Guoxiang Zou

{"title":"High-Resilience Epoxy Elastomer: Dynamic Ester Bonds Enable Reprocessing and Chemical Degradability","authors":"Caixia Zhao, Tian Fu, Xinyu Wu, Huici Han, Yan Lv, Guoxiang Zou","doi":"10.1002/app.71398","DOIUrl":"https://doi.org/10.1002/app.71398","url":null,"abstract":"<div>\u0000 \u0000 <p>Dynamic covalent polymer networks represent new opportunities in the design of sustainable epoxy resins due to their excellent reprocessability. However, these vitrimers typically exhibit mechanical brittleness and poor resilience performance, limiting their applications in sealing, vibration damping, and impact resistance. E44/poly(2-methyl-1,3-propanediol adipate)/glutaric acid (E44/PMPA/GA) epoxy elastomers, with high resilience, reprocessability, and chemical degradability, were synthesized through epoxy-carboxylic acid opening-ring reactions. The E44/PMPA<sub>2</sub>/GA<sub>8</sub> vitrimers exhibited the highest cross-linking density (226.3 mol/m<sup>3</sup>), a <i>T</i><sub>g</sub> of 22.8°C (from DMA), and high thermal stability (<i>T</i><sub>i</sub>: 337°C). Owing to flexible chains and a moderate cross-linking density, the E44/PMPA<sub>10</sub> exhibited superior resilience (residual strain 5.6% after five tensile cycles). Meanwhile, the dynamic ester bonds within the networks endowed the E44/PMPA/GA with self-healing ability and recyclability. In addition, the vitrimers were completely chemically degradable. By regulating the synergistic effects of flexible chain segments and dynamic bonds, this work provided a promising and feasible route for the preparation of epoxy elastomers that integrate high resilience, reprocessability, and chemical degradability.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Copolymerization of MMA With HEMA Together With Their Transesterification to Yield Tough and Transparent PMMA 甲基丙烯酸甲酯与甲基丙烯酸甲酯共聚及其酯交换反应制备坚韧透明的聚甲基丙烯酸甲酯

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-27 DOI: 10.1002/app.71404

Jiehao Qu, Jicheng Li, Guang Yang, Nianzhao Gao, Xiangdong Liu

{"title":"Copolymerization of MMA With HEMA Together With Their Transesterification to Yield Tough and Transparent PMMA","authors":"Jiehao Qu, Jicheng Li, Guang Yang, Nianzhao Gao, Xiangdong Liu","doi":"10.1002/app.71404","DOIUrl":"https://doi.org/10.1002/app.71404","url":null,"abstract":"<div>\u0000 \u0000 <p>Poly(methyl methacrylate) (PMMA) possesses high optical transparency but suffers from insufficient mechanical strength. Most toughening methods compromise optical clarity, processability, or industrial scalability. Herein, we present a scalable toughening strategy based on copolymerization of methyl methacrylate (MMA) with 2-hydroxyethyl methacrylate (HEMA), combined with transesterification between their units. The resulting random MMA-co-HEMA copolymers retain excellent visible-light transmittance (above 90.0%, 5 mm) while achieving remarkable mechanical enhancements, including increases of 74% in tensile strength and 22% in impact strength compared with linear PMMA. Further studies reveal that the transesterification between HEMA and MMA units induces a lightly cross-linked network. This approach not only offers advantages in simplicity, cost-effectiveness, and compatibility with industrial processes such as casting molding, but also effectively prevents uncontrollable autoacceleration during bulk polymerization. These findings provide new insights for the designing of high-performance optical thermoplastics with promising potential in structural optical applications.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experiment-Driven Performance Prediction of Fused-Filament-Fabricated Shape Memory Polymer Composites With a Data-Divide-Assisted Neural Network 基于数据分割辅助神经网络的熔丝制造形状记忆聚合物复合材料实验驱动性能预测

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-27 DOI: 10.1002/app.71402

Rui Zhou, Zihan Guo, Jiayu Li, Yunteng Jiang, Hao Wu, Chunzhi Du

{"title":"Experiment-Driven Performance Prediction of Fused-Filament-Fabricated Shape Memory Polymer Composites With a Data-Divide-Assisted Neural Network","authors":"Rui Zhou, Zihan Guo, Jiayu Li, Yunteng Jiang, Hao Wu, Chunzhi Du","doi":"10.1002/app.71402","DOIUrl":"https://doi.org/10.1002/app.71402","url":null,"abstract":"<div>\u0000 \u0000 <p>Fused filament fabrication (FFF) of shape memory polymer composites (SMPCs) offers potential for aerospace applications requiring mechanical robustness and reliable shape-memory performance. However, performance-oriented process optimization remains challenging. Therefore, this study establishes an experiment-driven process-property database and develops a framework to predict tensile strength, shape fixation ratio, and shape recovery ratio. Tensile and thermomechanical data are obtained through full-factorial and orthogonal experiments, and analysis of variance is used to evaluate the effects of the experimental factors on the corresponding properties. On this basis, a data-divide-assisted genetic algorithm-optimized backpropagation neural network (DDGA-BP) is developed. The model retains the trained network and its training record obtained during genetic optimization and uses the retained network for final prediction, thereby improving prediction stability and reproducibility. To evaluate reliability and stability, DDGA-BP is compared with multiple linear regression, random forest regression, and conventional GA-BP over ten repeated carbon-content-stratified data splits. DDGA-BP achieves the highest mean <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mi>R</mi>\u0000 <mn>2</mn>\u0000 </msup>\u0000 </mrow>\u0000 </semantics></math> values of 0.836, 0.942, and 0.931 for the three properties, together with the lowest mean MAE and RMSE and lower variability than conventional GA-BP. The proposed framework enables accurate and reproducible property prediction and supports performance-oriented design of 4D-printed SMPC components.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving Durability of Silicone Rubber Dielectric Elastomer Composite by Constructing Covalent-Bonds Between the Surface-Modified Silica and Matrix 通过构建表面改性二氧化硅与基体之间的共价键提高硅橡胶介电弹性体复合材料的耐久性

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-23 DOI: 10.1002/app.71400

Kexin Bo, Huiying Li, Yuhong Ma, Wei Zou, Hong Wang, Like Sun, Chen Zhang

{"title":"Improving Durability of Silicone Rubber Dielectric Elastomer Composite by Constructing Covalent-Bonds Between the Surface-Modified Silica and Matrix","authors":"Kexin Bo, Huiying Li, Yuhong Ma, Wei Zou, Hong Wang, Like Sun, Chen Zhang","doi":"10.1002/app.71400","DOIUrl":"https://doi.org/10.1002/app.71400","url":null,"abstract":"<div>\u0000 \u0000 <p>The inherent viscoelastic behaviors of dielectric elastomers (DEs), such as creep and hysteresis, are important for their long-term service stability and energy efficiency in cyclic applications. In this work, a constrained interface between dielectric filler and silicone rubber matrix was constructed by modifying nano-silica surface with vinylmethyl dimethoxysilane (VMDMS). By the co-crosslinking reaction among the vinyl groups of modified nano-silica and polymethylvinylsiloxane (PMVS) matrix, the polymer chain mobility was restricted and the filler dispersion was improved. The as-obtained VMDMS@SiO<sub>2</sub>/PMVS nanocomposites exhibited remarkably enhanced compressive creep as low as 0.25%, which was 86% lower than that of SiO<sub>2</sub>/PMVS nanocomposite. Furthermore, the constrained interface also provided excellent dielectric stability after creep and minimized hysteresis loss during cyclic loading. This study presents an effective interfacial design strategy for developing durable and reliable DEs with suppressed viscoelasticity, which has the potential for applications in soft robotics and energy harvesting.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Barium Crosslinking in Bio-Based Sodium Alginate Films: Improved Barrier and Thermal Performance Toward Biodegradable Packaging Applications 生物基海藻酸钠薄膜中的钡交联：可降解包装应用中阻隔性和热性能的改善

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-08-21 DOI: 10.1002/app.71390

Sofia de Oliveira Pires, Cristian Berto da Silveira, Aline Fernandes de Oliveira

{"title":"Barium Crosslinking in Bio-Based Sodium Alginate Films: Improved Barrier and Thermal Performance Toward Biodegradable Packaging Applications","authors":"Sofia de Oliveira Pires, Cristian Berto da Silveira, Aline Fernandes de Oliveira","doi":"10.1002/app.71390","DOIUrl":"https://doi.org/10.1002/app.71390","url":null,"abstract":"<p>Growing environmental concerns associated with petroleum-based plastics have intensified the demand for sustainable, biodegradable materials for packaging applications. Sodium alginate is a natural polysaccharide with excellent biodegradability, biocompatibility, and film-forming ability; however, its high moisture sensitivity and moderate thermal stability limit its application. In this study, sodium alginate films were produced by solvent casting and ionically cross-linked with BaCl<sub>2</sub> solutions at concentrations of 1%, 2%, and 5% (w/v) to evaluate the influence of Ba<sup>2+</sup> on their structural, barrier, and thermal properties. The films were characterized by SEM/EDS, FTIR-ATR, TGA, and measurements of water vapor absorption, swelling, and mass loss. Cross-linking promoted denser polymer networks, reducing water vapor absorption from 20% ± 0.55% to 10.5% ± 0.56% at 75% relative humidity, while swelling decreased from 40% ± 2.5% to 29% ± 0.9% after 400 min. TGA indicated improved thermal stability, and mass loss after 24 h in water ranged from 11% to 13%. SEM revealed a more compact morphology with crystalline deposits, while FTIR confirmed ionic interactions between alginate carboxylate groups and Ba<sup>2+</sup> ions. Overall, Ba<sup>2+</sup> cross-linking significantly improved the physicochemical, barrier, and thermal properties of sodium alginate films, highlighting their potential as biodegradable packaging materials.</p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.71390","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0