{"title":"Cover Image, Volume 142, Issue 42","authors":"Xuefei Bi, Qianyi Fan, Yikun Dong, Zhen Li, Daomin Min, Yu Feng, Ji Liu, Chunming Zhao","doi":"10.1002/app.54193","DOIUrl":"https://doi.org/10.1002/app.54193","url":null,"abstract":"<p>The cover image is based on the article <i>Temperature-Dependent Energy Storage Mechanism in Polyimide Films: Optimizing High-Temperature Performance via Dihedral Angle Engineering</i> by Xuefei Bi et al., https://doi.org/10.1002/app.57616.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 42","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.54193","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196303","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}
{"title":"Development of Biodegradable Composites Using Banana Fiber and Betel Nut Husk Reinforced With PLA for Sustainable Applications","authors":"Mainul Islam, Tornado Roy, Md. Ariful Islam, Amanullah","doi":"10.1002/app.57461","DOIUrl":"https://doi.org/10.1002/app.57461","url":null,"abstract":"<div>\u0000 \u0000 <p>Environmental concerns are exacerbated by excessive production and degradation of synthetic materials such as petroleum-based plastics, encouraging researchers to look for biodegradable alternatives. The fibers from banana fiber and betel nut husk (BFBNH) can be utilized as substitutes since they are readily available, largely discarded, and provide the required mechanical and thermal qualities. In this work, we used polylactic acid (PLA) as the matrix to create a totally biodegradable composite that was strengthened with chopped BFBNH. To improve compatibility, the fibers were sized to match, and a compression molding machine was used to create the composites, guaranteeing even distribution and the best possible fiber-matrix bonding. Betel nut husk fibers are vital in reducing the void content, being delicate compared to banana fibers, where the latter has built the main structure. Results showed that the alkali-treated 30:70 ratio of banana to betel nut husk fibers exhibited the highest results in almost all test results, and this hybrid composite holds great promise for applications in furniture, interior structures, and even as structural materials. Additionally, because these composites are completely biodegradable, they can be disposed of at the end of their lives, providing a sustainable substitute for traditional synthetic materials.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 43","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145237114","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}
{"title":"Correction to “Carbon Black Dispersing Agents Based on Fully Hydrophilic Poly(N-Vinylamide): Surface Adsorption via Selective Interactions”","authors":"","doi":"10.1002/app.57837","DOIUrl":"https://doi.org/10.1002/app.57837","url":null,"abstract":"<p>P. M. Jeschenko, J. Köhler, M. Lantzius-Beninga, and M. Möller, “Carbon Black Dispersing Agents Based on Fully Hydrophilic Poly(<i>N</i>-Vinylamide): Surface Adsorption via Selective Interactions,” <i>Journal of Applied Polymer Science</i> 141 (2024): e56144, https://doi.org/10.1002/app.56144.</p><p>An affiliation was missing for P. M. J. and M. M. in the original version of the article. The correct affiliations are as follows:</p><p>Pascal M. Jeschenko<sup>1,2,3,*</sup>, Jens Köhler<sup>1</sup>, Marcus Lantzius-Beninga<sup>4</sup>, Martin Möller<sup>1,2,3,4,*</sup>\u0000 </p><p>\u0000 <sup>1</sup>DWI—Leibniz Institute for Interactive Materials, Aachen, Germany</p><p>\u0000 <sup>2</sup>Max Planck School Matter to Life, Heidelberg, Germany</p><p>\u0000 <sup>3</sup>Max Planck Institute for Medical Research, Heidelberg, Germany</p><p>\u0000 <sup>4</sup>Institute of Technical and Macromolecular Chemistry (ITMC), RWTH Aachen University, Aachen, Germany</p><p>We apologize for this error.</p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 41","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.57837","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145102321","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}
Ying Hu, Xin Wu, Lin Zhou, Yan Kou, Ming Huang, Mao Chen
{"title":"Preparation of Epoxy Vitrimer Potting Materials Based on Dynamic Disulfide Bonds: Recyclability, Hydrophobicity, Temperature Shock Resistance, and Shape Memory","authors":"Ying Hu, Xin Wu, Lin Zhou, Yan Kou, Ming Huang, Mao Chen","doi":"10.1002/app.57710","DOIUrl":"https://doi.org/10.1002/app.57710","url":null,"abstract":"<div>\u0000 \u0000 <p>Epoxy resin, as a widely utilized insulating material in the field of electronic device encapsulation, faces challenges in achieving nondestructive disassembly of end-of-life devices and material recycling due to its three-dimensional cross-linked network structure, despite providing excellent mechanical properties. Additionally, it lacks autonomous repair capabilities when subjected to mechanical damage. To address these critical industry challenges, this study introduces dynamic disulfide bonds into the epoxy potting system, designing an epoxy vitrimer material with topologically reconfigurable network capabilities. This approach offers a viable solution for advancing the sustainable development of electronic encapsulation materials. The experiment employed an epoxy monomer containing dynamic disulfide bonds and a trifunctional thiol curing agent to prepare epoxy vitrimer potting insulation materials via a one-pot thiol-epoxy click reaction. The synthesized vitrimer demonstrates outstanding thermal stability (<i>T</i>\u0000 <sub>d</sub> = 318°C), electrical breakdown strength (<i>E</i>\u0000 <sub>b</sub> = 27.09 kV/mm), rapid stress relaxation behavior (<i>τ</i> = 39 s), and superior hydrophobicity (contact angle = 118°). Furthermore, the encapsulated electronic components function normally, while the material's dynamic properties enable nondestructive recycling of components, autonomous repair of mechanical damage, and shape memory characteristics. The material maintains robust stability even after multiple high-low temperature cycles.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284818","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}
{"title":"Mechanical and Electrical Robust Self-Healable and Recyclable Silicone Elastomer via Combed Siloxane Precursor","authors":"Mingsheng Li, Yiming Xu, Shizhe Peng, Shiyang Yi, Jingwen Li, Zhongqi Guo, Yonghong Cheng, Lei Zhang","doi":"10.1002/app.57687","DOIUrl":"https://doi.org/10.1002/app.57687","url":null,"abstract":"<div>\u0000 \u0000 <p>Silicone elastomers are valued for their mechanical and insulating qualities but traditionally cannot self-heal, limiting their long-term utility. This research presents a dynamic silicone network created using combed silicone precursors, effectively reducing synthesis costs and enhancing self-healing capabilities. The network incorporates dynamic cross-linking via aminopropyl groups that react with isocyanate and bulky secondary amines, giving materials that achieve over 80% healing efficiency for mechanical properties and can repair electrical breakdown holes. The material also shows excellent recyclability, retaining more than 80% of its mechanical properties and over 90% of its DC breakdown strength. Higher crosslink density improves mechanical strength and insulation but reduces healing and recycling efficiency. Conversely, increasing the content of dynamic bonds improves healability and reprocessability, although at some cost to mechanical strength. This innovative approach provides a cost-effective, highly functional solution for advanced electrical insulation needs.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284590","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}
{"title":"Purification of PNS From Sanqi Extract Using a Rosin-Based Polymer Composite: Adsorption and Mechanism","authors":"Zhenfang Zeng, Wei Wei, Hao Li, Wen Li, Lijuan Bai, Mengling Wei, Jiabao Liu, Danmei Chen, Fuhou Lei","doi":"10.1002/app.57621","DOIUrl":"https://doi.org/10.1002/app.57621","url":null,"abstract":"<div>\u0000 \u0000 <p>Developing an easily synthesized and efficient adsorbent for separating Panax notoginseng saponins (PNS) from Sanqi extract remains a significant challenge. Here, a novel rosin-based polymer composite (RBM/DT) was synthesized using hydrogenated rosin glycol acrylate (HREGA), divinylbenzene (DVB), and N,N-dimethylaminoethyl methacrylate (DMAEMA), in combination with diatomite, a naturally occurring adsorbent. The physicochemical properties of RBM/DT were characterized by multiple analytical techniques, revealing a mesoporous structure, narrow particle size distribution, and good thermal stability. Following the application of RBM/DT for the purification of PNS, the content of PNS increased markedly from 49.32% to 88.33%. Quantum chemical calculations indicated that <i>van der Waals</i> forces, hydrogen bonding, and electrostatic interactions contributed to the process. Thermodynamic analysis confirmed that the adsorption was spontaneous, endothermic, and involved chemisorption. Collectively, these findings suggest that RBM/DT is an effective, thermally stable, and reusable biosorbent for PNS purification from Sanqi extract.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 42","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196579","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}
Virginia Celestre, Jeppe Madsen, Chiara Siracusa, Lisa Burkart, Felice Quartinello, Sonja Herres-Pawlis, Georg M. Guebitz, Alessandro Pellis, Anders Egede Daugaard
{"title":"Microwave-Assisted Synthesis of Polyethylene Terephthalate as a Fast Screening Method for Catalyst Evaluation and for Evaluating Polymerizability of Monomers Recovered From Degraded Polyesters","authors":"Virginia Celestre, Jeppe Madsen, Chiara Siracusa, Lisa Burkart, Felice Quartinello, Sonja Herres-Pawlis, Georg M. Guebitz, Alessandro Pellis, Anders Egede Daugaard","doi":"10.1002/app.57688","DOIUrl":"https://doi.org/10.1002/app.57688","url":null,"abstract":"<p>Microwave irradiation is demonstrated as a screening method for the polymerization of crude terephthalic acid (TA) and crude bis(2-hydroxyethyl) terephthalate (BHET), obtained from the enzymatic hydrolysis and glycolysis of poly(ethylene terephthalate) (PET). The use of microwave irradiation and a reduced pressure of 40 mbar allows for the preparation of medium-long PET with measured Mw values up to 30–40 kg/mol relative to PMMA standards in less than 1 h. The versatility of the screening approach is demonstrated through the evaluation of a range of esterification and polycondensation catalysts using pristine starting materials. It was found that for the reaction between TA and EG using a Ti(OBu)<sub>4</sub> catalyst, it yields the largest polymers, accompanied by minimal coloration. For the polymerization of BHET, the Sb<sub>2</sub>O<sub>3</sub> catalyst produced large polymers with little coloration, while the use of the Ti(OBu)<sub>4</sub> catalyst gives highly colored materials. The developed procedure is used to re-polymerize crude TA recovered from enzymatic degradation of PET waste as well as crude BHET recovered from glycolysis of pristine and waste PET. Repolymerization is possible, but the color and molecular weight of the final polymer are found to depend on the type and amount of impurities in the starting materials. The relevance of the formed intermediates as precursors for high molar mass PET was confirmed through solid-state polymerization that yielded high molar mass PET from selected samples.</p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.57688","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284587","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}
Zhigang Zhan, Wei Wu, Huanbo Hu, Junjian Ye, Lu Cui, Qiuyang Yu, Changxi Chen
{"title":"Surface-Coated Silicone-Modified Waterborne Polyurethane With Implanted Superhydrophobic SiO2 Nanoparticles Preparation and Study of TPU Self-Cleaning Material","authors":"Zhigang Zhan, Wei Wu, Huanbo Hu, Junjian Ye, Lu Cui, Qiuyang Yu, Changxi Chen","doi":"10.1002/app.57709","DOIUrl":"https://doi.org/10.1002/app.57709","url":null,"abstract":"<div>\u0000 \u0000 <p>This study presents the synthesis of a waterborne polyurethane (WPU-A) emulsion modified with (3-(2-aminoethyl)aminopropyl)trimethoxysilane (AEAPTMS). Self-cleaning materials were developed by applying WPU-A emulsions onto thermoplastic polyurethane (TPU) components, which were shaped using selective laser sintering (SLS), through a post-treatment impregnation and curing method. Additionally, superhydrophobic nano-SiO<sub>2</sub> (sn-SiO<sub>2</sub>) was incorporated onto the surface of the TPU/WPU-A material. The resulting TPU/WPU-A/sn-SiO<sub>2</sub> self-cleaning composites were created, and the self-cleaning capabilities along with other characteristics of the two TPU-coated materials were examined individually. Findings indicated that the water contact angle for pure TPU measured 123.8°, while the TPU/WPU-A0.5/sn-SiO<sub>2</sub>-20, treated with WPU-A emulsion, exhibited an increased angle of 153.3°, achieving superhydrophobicity. The incorporation of sn-SiO<sub>2</sub> particles enhanced the surface roughness of the TPU/WPU-A0.5/sn-SiO<sub>2</sub>-20 material, facilitating the easy removal of surface contaminants. This enhancement contributes to improved anti-pollution properties and effective self-cleaning performance of the TPU material. The compressive strength of the TPU/WPU-A0.5/sn-SiO<sub>2</sub>-20 skeletonized parts reached 0.733 MPa, representing a 168% increase compared to the pure TPU skeleton. The TPU/WPU-A0.5/sn-SiO<sub>2</sub>-20 material, which is coated with WPU-A and integrated with sn-SiO<sub>2</sub>, demonstrates excellent self-cleaning and mechanical properties, indicating its potential for various applications.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284722","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}
Chaoran Qin, Xiaoli Gao, Deli Wang, Hui Xiong, Beina Wu
{"title":"Flexible, Robust Sodium Alginate/PAAm Hydrogel for High-Performance Supercapacitor","authors":"Chaoran Qin, Xiaoli Gao, Deli Wang, Hui Xiong, Beina Wu","doi":"10.1002/app.57584","DOIUrl":"https://doi.org/10.1002/app.57584","url":null,"abstract":"<div>\u0000 \u0000 <p>The use of hydrogel electrolytes with excellent ion transport capability and robust mechanical properties for energy storage devices such as supercapacitors has developed rapidly in recent years. However, the preparation of hydrogel electrolytes is usually complicated, time consuming, and expensive, which limits the potential of hydrogel electrolytes in practical applications. Here, the natural polymer material sodium alginate and the common polymer polyacrylamide were selected for synthesizing the double cross-linked network conductive hydrogel through a straightforward in situ polymerization, followed by ionic response. The hydrogel has a rich pore structure to provide structural support for ion transport, while the double cross-linked structure provides excellent mechanical properties with an elongation at break of 229%. The area specific capacitance of the hydrogel-based supercapacitor is as high as 642.5 mF/cm<sup>2</sup>, and its energy density reaches 89.2 <i>μ</i>Wh/cm<sup>2</sup> at a power density of 500.2 <i>μ</i>W/cm<sup>2</sup>. Due to the excellent flexibility and robust mechanical properties, the area specific capacitance maintained 83.6% after 500 bending cycles. In practical applications, it can drive small electronic devices to operate normally. This study opens up a simple approach for the preparation of conductive hydrogels in the field of green energy storage and sustainable use.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 41","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100958","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}
{"title":"Poly(2,5-Benzimidazole) as a Membrane Material for Solvent Dehydration: Effect of Bound Methanesulfonic Acid","authors":"Lavanya Alladi, Ashish K. Lele, Ulhas K. Kharul","doi":"10.1002/app.57708","DOIUrl":"https://doi.org/10.1002/app.57708","url":null,"abstract":"<div>\u0000 \u0000 <p>Towards addressing issues of solvent stability of polymeric membrane materials for pervaporation (PV), this work investigates thermochemically robust poly(<i>2,5</i>-benzimidazole) (ABPBI) bound with methane sulfonic acid (MSA) for solvent dehydration, for the first time to our knowledge. Phase inversion membranes with and without bound-MSA were prepared, thermally treated at different temperatures up to 350°C, and analyzed for physical and pervaporation properties. The physical characterizations (FTIR, WAXD, TGA, XPS, SEM, and EDX) and sorption analysis were performed using flat sheet membranes, whereas hollow fiber membranes were used for the pervaporation analysis with chosen solvents (alcohols and two polar aprotic solvents). Physical characterizations established the presence of MSA and the nonporous, dense nature of membranes, irrespective of their treatment temperatures. The sorption of pure solvents in the membrane is primarily affected by thermal treatment of the membranes. The pervaporation analysis was performed using different solvent: Water feed compositions. Using 85:15 as the feed, the average separation factors for dehydration of isopropanol, acetonitrile, and <i>N</i>,<i>N-</i>dimethylformamide (DMF) were 393, 213, and 185, respectively, with an appreciable “pervaporation separation index.” The long-term membrane performance till 360 h was analyzed to shed light on practical applicability.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 44","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145284723","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}