Journal of Applied Polymer Science最新文献_第6页

Shape Memory Polymers With High Response Temperature and Application in Wellbore Stability 具有高响应温度的形状记忆聚合物及其在井筒稳定性中的应用

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-17 DOI: 10.1002/app.56847

Zhendong Liu, Tengfei Sun, Gongrang Li, Hai Xu, Jianren Lv

引用次数: 0

Mechanical, Thermal, and Electrical Properties of Epoxy Monolith Sheets Containing Carbon Black 含炭黑的环氧树脂整体板材的机械、热和电特性

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-17 DOI: 10.1002/app.56863

Yoshiyuki Kamo, Akikazu Matsumoto

{"title":"Mechanical, Thermal, and Electrical Properties of Epoxy Monolith Sheets Containing Carbon Black","authors":"Yoshiyuki Kamo, Akikazu Matsumoto","doi":"10.1002/app.56863","DOIUrl":"https://doi.org/10.1002/app.56863","url":null,"abstract":"<p>Conductive pastes have been used to bond semiconductors and create electrical circuits, but in recent years their use has expanded to include flexible substrates used in portable and wearable electronic devices that require high stretchability. Conductive pastes using metals, carbons, etc. have problems such as the need to add large amounts of filler and the insufficient mechanical strength and poor heat resistance of the binder polymer material. Recently, epoxy monolith as a new material has been developed to achieve high strength and elongation by introducing a porous structure into cured epoxy resin. In this study, we demonstrate that carbon black (CB), which is added as a conductive nanofiller during the manufacturing process of epoxy monoliths, segregates within the framework of the epoxy monolith and forms conductive paths with a three-dimensional continuous structure. We investigated the structure and mechanical properties of the CB-containing epoxy monolith sheets and subsequently characterized their electrical and thermal conductivity. Furthermore, we clarified the change in electrical resistance when tensile stress was applied to the monolith sheet.</p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 19","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.56863","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793884","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

Enhancing Dielectric Elastomer Driven Deformation Through Multifunctional Chemical Crosslinkers

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-17 DOI: 10.1002/app.56862

Yan Meng, Yanan Hao, Tong Liang, Kun Xing, Li-Juan Yin, Limin Guo, Zhi-Min Dang

{"title":"Enhancing Dielectric Elastomer Driven Deformation Through Multifunctional Chemical Crosslinkers","authors":"Yan Meng, Yanan Hao, Tong Liang, Kun Xing, Li-Juan Yin, Limin Guo, Zhi-Min Dang","doi":"10.1002/app.56862","DOIUrl":"https://doi.org/10.1002/app.56862","url":null,"abstract":"<div>\u0000 \u0000 <p>With the rapid development of flexible wearable devices and transducers, plenty of studies have been conducted in recent years on dielectric elastomers (DEs) for various applications due to their significant deformation ability, high energy conversion efficiency, and lightweight. However, DEs usually need pre-stretching to enhance electric breakdown strengths and produce large deformation, increasing the complexity of the driving structures and limiting their applications. In this work, the electromechanical properties of elastomers chemically crosslinked by crosslinking agents with different functionalities are investigated. The Young's modulus can be increased as the content of the trifunctional crosslinking agent increases, leading to a remarkable enhancement of electrical breakdown strength and subsequent driving deformation. Specifically, PT4.5 achieves a maximum driving deformation of 34.2% at 46 kV mm<sup>−1</sup> without pre-stretching, increasing by 75% compared with PT0, which is crosslinked only by bifunctional crosslinking agent. Consequently, the energy density reaches 0.034 MJ m<sup>−3</sup>, which is 4.2 times higher than mammalian skeletal muscle (0.008 MJ m<sup>−3</sup>). These findings propose a practical and simple strategy to improving breakdown strength and electrically driven deformation without the need for pre-stretching.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 19","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793883","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

Rheology as a Tool to Investigate Anti-Nucleation in Semicrystalline Polymers 流变学是研究半结晶聚合物反核现象的工具

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-17 DOI: 10.1002/app.56873

Orel Shem Tov, Noy Bacharuzi, Ana L. Dotan, Dan Y. Lewitus

{"title":"Rheology as a Tool to Investigate Anti-Nucleation in Semicrystalline Polymers","authors":"Orel Shem Tov, Noy Bacharuzi, Ana L. Dotan, Dan Y. Lewitus","doi":"10.1002/app.56873","DOIUrl":"https://doi.org/10.1002/app.56873","url":null,"abstract":"<div>\u0000 \u0000 <p>In semicrystalline polymers, the crystallization process plays a vital role in determining their properties. Differential scanning calorimeter (DSC) is the conventional method for studying crystallization kinetics in polymers but may lack sensitivity in detecting antinucleating phenomena. This work applied a rheological technique to detect the antinucleating effect of 3,4-dihydroxyhydrocinnamic acid (hydrocaffeic acid [HCA]) on polycaprolactone (PCL). While DSC was useful in detecting HCA's ability to reduce PCL's melting point, it could not detect the polymer's crystallization during the cooling cycle. Adding the nucleating agent dibenzylidene sorbitol (DBS) did not negate HCA's antinucleating effect. Parallel plate rheology revealed that HCA caused a fourfold reduction in solidification time, with Avrami crystallization rate constants changing by 10<sup>−3</sup> times. Additionally, polarized optical microscopy visually demonstrated the hindering effect of HCA on PCL crystallization. Analyzing crystallization kinetics by rheological measurements and the Avrami model proved successful in studying the crystallization kinetics of PCL with the antinucleating agent HCA while observing the crystallization process.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 20","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826708","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

Fabrication of Efficient and Easily Recyclable Silver Nanoparticles-Anionic Polymer Hydrogel Composite Catalyst for Rapid Degradation of Water Pollutants

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-17 DOI: 10.1002/app.56841

Irum Fatima, Muhammad Ajmal, Atif Naseem, Abid Ali, Fatima Javed, Muhammad Ali Hashmi, Khalid Mahmood, Muhammad Ahmad, Faheem Ullah, Zaheer Ahmad

{"title":"Fabrication of Efficient and Easily Recyclable Silver Nanoparticles-Anionic Polymer Hydrogel Composite Catalyst for Rapid Degradation of Water Pollutants","authors":"Irum Fatima, Muhammad Ajmal, Atif Naseem, Abid Ali, Fatima Javed, Muhammad Ali Hashmi, Khalid Mahmood, Muhammad Ahmad, Faheem Ullah, Zaheer Ahmad","doi":"10.1002/app.56841","DOIUrl":"https://doi.org/10.1002/app.56841","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, a porous three-dimensional polymeric network of poly(3-sulfopropyl methacrylate) [p(SPMA)] is prepared and embedded with silver nanoparticles (AgNPs) to design a nanocomposite catalyst. The analytical techniques including X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy coupled with energy dispersive X-ray analysis (SEM–EDX), rheology, and UV–visible spectroscopy are used to investigate the composition and morphology of the prepared nanocomposite catalyst. The fabricated p(SPMA) hydrogel exhibits hydrophilic character with % swelling of 1974 in aqueous medium. The porosity of the nanocomposite catalyst is endorsed by SEM while the skeleton of p(SPMA) and embedding of AgNPs is affirmed by EDX. The catalytic performance of the synthesized nanocomposite catalyst is analyzed in the chemical reduction of two different dyes; methylene blue (MB), methyl orange (MO), and two different nitroaromatic compounds; 4-nitrophenol (4-NP), and 4-nitroaniline (4-NA). The apparent rate constant (k<sub>app</sub>) of the catalytic is found to be 0.365 × 10<sup>−2</sup>, 1.059 × 10<sup>−2</sup>, 0.159 × 10<sup>−2</sup>, and 0.581 × 10<sup>−2</sup> s<sup>−1</sup>, for 4-NA, 4-NP, MO, and MB, respectively. The synthesized nanocomposite catalyst is recycled 10 times in succession by a simple, quick, and effortless process of filtration via a plankton cloth filter, and it is found that the catalyst retains 70% activity in the tenth cycle.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 19","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793886","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

Mechanically Strong and Thermally Insulating Polyimide Aerogels by Homogeneity Reinforcement of Aluminum Oxide Cluster 通过均匀强化氧化铝团簇实现机械强度和隔热性能的聚酰亚胺气凝胶

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-17 DOI: 10.1002/app.56872

Shihao Fu, Chang Sun, Lixin Han, Zhiqiang Li, Shuai Guo, Guangbin Li, Zhu Long

{"title":"Mechanically Strong and Thermally Insulating Polyimide Aerogels by Homogeneity Reinforcement of Aluminum Oxide Cluster","authors":"Shihao Fu, Chang Sun, Lixin Han, Zhiqiang Li, Shuai Guo, Guangbin Li, Zhu Long","doi":"10.1002/app.56872","DOIUrl":"https://doi.org/10.1002/app.56872","url":null,"abstract":"<div>\u0000 \u0000 <p>High-performance thermal insulation is critically needed in applications where heat transfer must be substantially minimized. Traditional insulating materials, whether organic or inorganic, often suffer from thermal instability or mechanical fragility. Herein, we introduce a series of lightweight, highly porous polyimide/aluminum oxide cluster (PI/AlOC) composite aerogels that exhibit superior thermal insulation properties, achieved through freeze-drying and thermal imidization processes. The aluminum oxide clusters serve as cross-linking agents, enhancing the interaction between polyimide molecular chains and endowing the composite with improved structural integrity and mechanical robustness, as evidenced by a compression modulus of 8.7 MPa, six-fold greater than that of pure PI aerogels. Moreover, the high porosity, reduced pore size, and three-dimensional network structure of the PI/AlOC composite aerogel confer exceptional thermal insulation performance, particularly at elevated temperatures, surpassing that of commercial thermal insulation materials. Thus, the PI/AlOC composite aerogels, with their high mechanical strength and outstanding thermal insulation, are promising for practical applications in thermal insulation.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 20","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826706","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

“Nuomici” Litchi Pericarp Waste Transformed Into Activated Film for Food Packaging

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-17 DOI: 10.1002/app.56767

Qiuyi Li, Fan Li, Yuanfeng Pan, Pingxiong Cai

{"title":"“Nuomici” Litchi Pericarp Waste Transformed Into Activated Film for Food Packaging","authors":"Qiuyi Li, Fan Li, Yuanfeng Pan, Pingxiong Cai","doi":"10.1002/app.56767","DOIUrl":"https://doi.org/10.1002/app.56767","url":null,"abstract":"<div>\u0000 \u0000 <p>The antioxidant composite film was prepared by blending the pericarp extract of the Chinese litchi variety “Nuomici” (NLPE) with chitosan (CS). The study examined the impact of various NLPE concentrations (0%, 2%, 5%, 10%, and 15% [w/v]) on the mechanical properties, water vapor barrier, UV–visible light barrier, and antioxidant properties of the CS film. The results indicated that the composite films displayed superior antioxidant and UV-barrier properties, accompanied by lower water vapor permeability coefficients, water content, elongation at break, and tensile strength, compared to the pure CS film. Fourier-transform infrared (FTIR) spectroscopy, SEM, and x-ray diffraction were employed to analyze the hydrogen bonding between CS and NLPE, revealing their excellent compatibility. Furthermore, fruit preservation studies demonstrated that CS composite film containing 5% (w/v) NLPE retarded weight loss and shrinkage of green grapes more effectively than both the pure CS film and the control group without film packaging. Therefore, CS/NLPE film holds significant potential and value for practical applications in food packaging, while also offering a novel approach for the reuse of waste resources and sustainable packaging.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 16","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612428","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

Robust Superhydrophobic Flame-Retardant Coating on Polyester Fabrics Based on Polyphosphazene Nanospheres

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-17 DOI: 10.1002/app.56888

Cong Zhou, Chang Sun, Dan Zhang

{"title":"Robust Superhydrophobic Flame-Retardant Coating on Polyester Fabrics Based on Polyphosphazene Nanospheres","authors":"Cong Zhou, Chang Sun, Dan Zhang","doi":"10.1002/app.56888","DOIUrl":"https://doi.org/10.1002/app.56888","url":null,"abstract":"<div>\u0000 \u0000 <p>Developing surface coatings with both superhydrophobic and flame-retardant properties for polyester (PET) fabrics is crucial yet challenging. A novel, environmentally friendly coating based on polyphosphazene nanospheres (PNSs) was introduced to address this challenge. The PNSs were synthesized via polycondensation of hexachlorocyclotriphosphazene and branched polyethyleneimine, followed by surface modification with stearic acid to enhance hydrophobicity. The modified PNSs are applied to PET fabric through a facile dip-coating process and co-cured with a binder and silicone resin. The resultant fabric demonstrates superior superhydrophobicity (water contact angle > 150°) and significant flame retardancy, characterized by a reduced peak heat release rate and inhibited melt dripping. The coating exhibits robust mechanical stability, maintaining its performance after 120 abrasion cycles, 250 tape peel-off cycles, and 10 washing cycles. Additionally, the treated fabric retains adequate air permeability at optimal coating concentrations. This approach enhances the functionality and safety of polyester textiles, with potential for industrial scale-up due to its cost-effectiveness and straightforward preparation process.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 20","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826705","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

Thermoreversible Nitrile Rubber Based on the Dual Role of Zinc Chloride 基于氯化锌双重作用的热可逆丁腈橡胶

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-14 DOI: 10.1002/app.56861

Zi Wei Dai, Xiao Ping Wang

{"title":"Thermoreversible Nitrile Rubber Based on the Dual Role of Zinc Chloride","authors":"Zi Wei Dai, Xiao Ping Wang","doi":"10.1002/app.56861","DOIUrl":"https://doi.org/10.1002/app.56861","url":null,"abstract":"<div>\u0000 \u0000 <p>A strategy for the preparation of thermoreversible nitrile rubber is demonstrated by introducing zinc chloride into sulfur-cured nitrile rubber to form metal coordination bonds, thereby constructing a dynamic double-crosslinking network as a potential solution for the severe environmental burden. In this study, the crosslinking structure and the mechanism of reprocessing are investigated by X-ray diffraction, Fourier transform infrared spectroscopy, and Raman spectroscopy, revealing that the crosslinking network is formed by monosulfide bonds, disulfide bonds, polysulfide bonds, and Zn<sup>2+</sup>-cyanide coordination bonds generated from zinc chloride that interact with the cyano groups on the nitrile rubber. Zinc chloride plays a dual role during the reprocessing process. On one hand, it participates in the cleavage/recombination of Zn<sup>2+</sup>-cyanide coordination bonds. On the other hand, it catalyzes the disulfide exchange reaction in the sulfur crosslinking system, enabling the recycled nitrile rubber to possess recyclability. Due to the double-crosslinking structure accompanied by the dual role of zinc chloride, nitrile rubber exhibits superior mechanical properties and impressive recyclability. The tensile strength and elongation at break of the double-crosslinking nitrile rubber reach 5.59 MPa and 387%, respectively, stronger than those of sulfur-cured nitrile rubber, maintaining 116.5% and 115.0% after the recycling process.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 19","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793476","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

A Selective Chromogenic and Fluorogenic Film Kit for Determination of Cyanide in Water and Soil Samples

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-02-14 DOI: 10.1002/app.56854

Ana Paula Reinick, Leandro Gabriel Gutierrez, Facundo Cravero, Santiago Eduardo Vaillard, Cristián Alejandro Ferretti

{"title":"A Selective Chromogenic and Fluorogenic Film Kit for Determination of Cyanide in Water and Soil Samples","authors":"Ana Paula Reinick, Leandro Gabriel Gutierrez, Facundo Cravero, Santiago Eduardo Vaillard, Cristián Alejandro Ferretti","doi":"10.1002/app.56854","DOIUrl":"https://doi.org/10.1002/app.56854","url":null,"abstract":"<div>\u0000 \u0000 <p>A single, quick, and effective film kit for the quantification of cyanide ions in water and soil samples was developed. The film kit consists of a polymeric membrane of sodium carboxymethyl cellulose and hydroxypropyl methyl cellulose that contains matrix dispersed SBA-15 particles impregnated with the molecular sensor. The molecular sensor is highly selective for the chromogenic and fluorometric detection of CN<sup>−</sup>, whose recognition mechanism is based on the nucleophilic addition to the dicyanovinyl group linked to an anthracenyl moiety. The analytical evaluation was carried out for quantification of CN<sup>−</sup> with the film kit and with the free sensor using UV–vis spectroscopy and fluorescence spectroscopy. The detection limit for the film kit by fluorescence spectroscopy was 0.6 μM CN<sup>−</sup>, which is lower than the WHO guideline for cyanide in drinking water. This method was successfully validated, and the application in real water and soil samples gave excellent results, suggesting that the film kit is versatile for determining CN<sup>−</sup> in these media.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 19","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793477","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