Journal of Applied Polymer Science最新文献_第9页

Nano-Silica-Particles Filling Effect on Mechanical Properties of Silicone-Rubber Composites

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-01-24 DOI: 10.1002/app.56790

Tadaharu Adachi, Kaori Kobayashi, Ayaka Noda, Kensuke Ishikawa

{"title":"Nano-Silica-Particles Filling Effect on Mechanical Properties of Silicone-Rubber Composites","authors":"Tadaharu Adachi, Kaori Kobayashi, Ayaka Noda, Kensuke Ishikawa","doi":"10.1002/app.56790","DOIUrl":"https://doi.org/10.1002/app.56790","url":null,"abstract":"<p>The mechanical properties of silicone-rubber composites filled with nano- or micro-silica-particles are discussed experimentally and theoretically. The matrix rubbers cured under various ratios of the main component to the curing agent are prepared to change the crosslinking density of the matrix rubber. Because the interphase layer made of the matrix rubber in the glassy state is formed around the nano-particle, the nano-particle behaves as an apparent single particle together with the interphase layer and the interphase layers apparently increase the nano-particle volume fraction. The Young's moduli of the nano- and micro-composites with a larger (apparent) particle volume fraction are greater than that of the matrix rubber. However, the proportional limit strains are smaller, although the fracture strains are slightly smaller. The Young's modulus and proportional limit strain can be analyzed theoretically with the (apparent) volume fraction. The fracture toughness of the composites increases as the (apparent) volume fraction increases, but it increases little at the (apparent) volume fraction above 0.2. However, the fracture toughness monotonically increases for the nano-composites with low crosslinking density of the matrix rubber. Finally, the mechanical properties can be designed by using the matrix rubber with the different crosslinking density and the interphase layer.</p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 17","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.56790","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690072","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

Thermo-Mechanical Degradation Kinetics of a High-Density Poly(Ethylene) Using a Closed-Cavity Rheometer

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-01-23 DOI: 10.1002/app.56784

Tim Schülein, Christos K. Georgantopoulos, Lars Bolk, Volker Herrmann, Manfred Wilhelm

{"title":"Thermo-Mechanical Degradation Kinetics of a High-Density Poly(Ethylene) Using a Closed-Cavity Rheometer","authors":"Tim Schülein, Christos K. Georgantopoulos, Lars Bolk, Volker Herrmann, Manfred Wilhelm","doi":"10.1002/app.56784","DOIUrl":"https://doi.org/10.1002/app.56784","url":null,"abstract":"<p>Mechanical recycling of polymers is an essential aspect to achieve circular economy. High shear stress, excessive temperature, and long residence time during reprocessing cause thermo-mechanical degradation of the polymer. Therefore, it is important to understand and quantify this degradation kinetics. Common ways to simulate degradation are very time and material consuming and clear insights into the respective influence of temperature and shear stress on degradation are rare. Within this publication a method is developed using a commercially available, close-cavity rheometer to emulate processing conditions in a defined way. This allows monitoring and predicting the behavior of a high-density polyethylene (HDPE) and quantify degradation kinetics and changes in the polymer topology. HDPE is selected as a model polymer due to its large production and wide range of applications. Different treated samples are analyzed by various rheological methods. Additionally, molecular characterization is conducted. A kinetic model to predict the changes in the molecular weight as a function of in-phase shear stress, temperature and duration during treatment is presented. The calculated activation energy for the initiation reaction agrees with the activation energy for HDPE degradation from thermogravimetric analysis. This activation energy is lowered by in-phase shear stress, modified by a factor of 1.7 m<sup>3</sup> mol<sup>−1</sup>.</p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 17","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.56784","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689340","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 Tumor Cell Affinity and Inhibiting Growth With Albumin-Coated Crosslinked Chitosan Nanoparticle Micelles

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-01-23 DOI: 10.1002/app.56751

Xiaowei Tan, Ziyi Liu, Cuiling Ouyang, Minxin Deng, Jingyi Xiao, Shufen Xiao, Tuo Huang, Siyu Yu, Hezhang Chen, Hui Chu, Jian Chen

{"title":"Enhancing Tumor Cell Affinity and Inhibiting Growth With Albumin-Coated Crosslinked Chitosan Nanoparticle Micelles","authors":"Xiaowei Tan, Ziyi Liu, Cuiling Ouyang, Minxin Deng, Jingyi Xiao, Shufen Xiao, Tuo Huang, Siyu Yu, Hezhang Chen, Hui Chu, Jian Chen","doi":"10.1002/app.56751","DOIUrl":"https://doi.org/10.1002/app.56751","url":null,"abstract":"<div>\u0000 \u0000 <p>Chitosan (CS)-based drug delivery systems often face challenges in obtaining clinical approval. Enhancing the binding affinity of CS-based carriers to target cells, such as tumor cells, is crucial for their translation from bench to bedside. Strategies like crosslinking (NHS-disulfide-NHS) and utilizing materials like albumin have proven effective in strengthening interactions between CS-based nanoparticles and tumor cells, thereby enhancing cellular uptake (cellular avidity). This study presents a novel approach using crosslinked CS nanoparticles loaded with doxorubicin, featuring reduction-responsive drug release and albumin coating. The albumin-coated crosslinked chitosan (ACCC) was assembled via reaction between amino of CS/albumin and NHS-disulfide-NHS. The resulting ACCC nanoparticle micelles demonstrate enhanced stability of the micelles. The hybrid crosslinked network ensures stability while providing ample space for drug loading and achieves reduction-responsive drug release through disulfide bond crosslinking. Moreover, the proposed system possesses excellent biocompatibility. Compared to uncoated crosslinked chitosan nanoparticle micelles, ACCC nanoparticle micelles exhibit potent cytotoxicity against tumor cells, particularly in reducing environment. Fluorescence imaging and flow cytometry analyses confirm the enhanced cellular affinity conferred by albumin coating. These findings underscore the potential of ACCC nanoparticles in improving tumor cell adhesion and anti-tumor efficacy, thus offering promising prospects for translational medicine in CS-based drug delivery.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 16","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612596","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 of a Highly Effective PMIA/BaTiO3 Nanofiber Membrane for Particulate Matter Removal Under High Temperature

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-01-23 DOI: 10.1002/app.56762

Mingxing Chen, Jiawang Sun, Qian Hu, Xinya Wang, Wei Zhang, Yonggui Li

{"title":"Preparation of a Highly Effective PMIA/BaTiO3 Nanofiber Membrane for Particulate Matter Removal Under High Temperature","authors":"Mingxing Chen, Jiawang Sun, Qian Hu, Xinya Wang, Wei Zhang, Yonggui Li","doi":"10.1002/app.56762","DOIUrl":"https://doi.org/10.1002/app.56762","url":null,"abstract":"<div>\u0000 \u0000 <p>Particulate matter (PM) pollution is widely recognized as a major threat to public health, making the development of thermally stable filters for particulate removal in high-temperature environments critically important. However, the common polymer-based nanofiber air filters are inadequate stability when exposed to high temperature. In this study, the poly (m-phenylene isophthalamide) (PMIA) and nano barium titanate (BaTiO<sub>3</sub>) which showed remarkable thermal endurance was utilized to prepare the PMIA/BaTiO<sub>3</sub> composite nanofiber air filter. The structure and performance of nanofibers were regulated by changing the addition of BaTiO<sub>3</sub>. The PMIA/BaTiO<sub>3</sub> nanofiber air filter with nano-protrusion structure exhibits high PM2.5 filtration efficiency (98.7%) and low pressure drop (60.4 Pa). Even after being exposed to treatment at 250°C, the PMIA/BaTiO<sub>3</sub> composite nanofiber air filter can still maintain stable filtration performance. The results showed that PMIA/BaTiO<sub>3</sub> nanofiber materials hold promise for eliminating particulate matter in high-temperature environments.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 16","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612599","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

Cotton From Industrial Waste Modified for Effective Absorption of Oil Spills

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-01-23 DOI: 10.1002/app.56773

Chandra Jeet Singh, Mayuri Srivastava, Vivek Jaiswal, Anik Ghosh, Samrat Mukhopadhyay, Raju Seenivasan Rengasamy

引用次数: 0

The Impact of Ionic Liquids on the Thermomechanical and Biological Properties of Polymer-CNT Composites

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-01-22 DOI: 10.1002/app.56757

Aqeel Ahmad, Masooma Nazar, Hamayoun Mahmood, Faiza Sharif, Othman Charles S. Al-Hamouz, Muhammad Moniruzzaman

{"title":"The Impact of Ionic Liquids on the Thermomechanical and Biological Properties of Polymer-CNT Composites","authors":"Aqeel Ahmad, Masooma Nazar, Hamayoun Mahmood, Faiza Sharif, Othman Charles S. Al-Hamouz, Muhammad Moniruzzaman","doi":"10.1002/app.56757","DOIUrl":"https://doi.org/10.1002/app.56757","url":null,"abstract":"<div>\u0000 \u0000 <p>Polyetheretherketone (PEEK) composites that incorporate hydroxyapatite (HA) and multiwalled carbon nanotubes (MWCNTs) exhibit significant potential for biomedical applications. Despite this, getting MWCNTs evenly distributed throughout the PEEK matrix remains challenging. This study investigates the effects of two ionic liquids (ILs) at varying quantities on the mechanical and biological characteristics of composites made of PEEK and MWCNTs. The concentrations of IL [EMIM]HSO<sub>4</sub> (1-ethyl-3-methylimidazolium hydrogen sulfate) and IL [BMIM]Ac (1-methyl-3-butylimidazolium acetate) varied from 0.5 to 2 wt% to modify the MWCNTs. The modified MWCNTs were combined with PEEK and HA by melt-blending and thermal compression to create PEEK/MWCNTs/HA composite sheets. FESEM and optical micrographs showed ILs-modified MWCNTs dispersed homogeneously in PEEK. The composites of PEEK and MWCNTs that included 1 wt% [BMIM]Ac degraded at the maximum temperature (580.89°C) and provided the elastic modulus that was 35% greater than that of non-IL composites. The Alamar blue assay investigation confirmed that inclusion of HA to PEEK composites improved the cells viability (more than 80%). The results showed that ILs-based methods are environmentally friendly, and promising way to treat PEEK and HA for uniform MWCNTs dispersion, which could have future in biological applications.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 16","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612586","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 Characterization of a Novel Cooling Agent With Intelligent Response Long-Term Release Effect

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-01-22 DOI: 10.1002/app.56764

Dongxu Liu, Wenxin Hu, Zhenlin Shang, Xiaojing Pei, Jinlong Sun, Li Zhou, Yifan He, Shujing Li, Zhaohui Qu, Ze Zhang

{"title":"Preparation and Characterization of a Novel Cooling Agent With Intelligent Response Long-Term Release Effect","authors":"Dongxu Liu, Wenxin Hu, Zhenlin Shang, Xiaojing Pei, Jinlong Sun, Li Zhou, Yifan He, Shujing Li, Zhaohui Qu, Ze Zhang","doi":"10.1002/app.56764","DOIUrl":"https://doi.org/10.1002/app.56764","url":null,"abstract":"<div>\u0000 \u0000 <p>Coolant, a general term for all chemical substances that produce a cooling effect without strong medicinal properties. Currently reported coolants are generally used as additives directly in food and daily chemicals. Here we pioneered a responsive nanoscale formulation to improve the application limitations of coolants. The cooling agent consists of 1,3-propanediol, high-substituted hydroxypropyl cellulose(H-HPC), and three coolants, utilizing H-HPC as the polymer shell that encapsulates and releases the coolants. It has long-lasting release properties and can be released immediately upon contact with water through the vesicle structure formed by H-HPC. The cooling agent has a particle size between 20 and 60 nm, a pH between 6.16 and 7.28, a refractive index between 1.400 and 1.500, a viscosity between 1500 and 3000 mPa s, and a good stability without precipitation and delamination after centrifugation. Meanwhile, the cold stimulation neuron test shows the excellent performance of longer duration and better effect than menthol cooling sensation. Its good formulation application shows a better application prospect in cosmetics and light chemical industry.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 16","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612584","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 Polytetrafluoroethylene Composite Membrane via Laser Perforating and Nanosilica Coating for Efficient Oil–Water Separation

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-01-22 DOI: 10.1002/app.56789

Denan Zhang, Zhenbei Lyu, Delian Peng, Wenhai Peng, Wei Xue

引用次数: 0

Promising Electromagnetic Interference Shielding Materials: Hybrid Fillers Reinforced Bio-Based Composites

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-01-22 DOI: 10.1002/app.56618

Bedriye Ucpinar, Ayse Aytac

{"title":"Promising Electromagnetic Interference Shielding Materials: Hybrid Fillers Reinforced Bio-Based Composites","authors":"Bedriye Ucpinar, Ayse Aytac","doi":"10.1002/app.56618","DOIUrl":"https://doi.org/10.1002/app.56618","url":null,"abstract":"<div>\u0000 \u0000 <p>Electromagnetic pollution, also known as electromagnetic interference (EMI) issues, is a growing concern as electronic and telecommunication technologies advance. The resulting urgent demand for EMI shielding materials underscores the need for the development of high-performance, environmentally friendly shielding materials. Here, we assess the impact of multiscale carbon-based hybrid filler on the EMI shielding performance of polyamide 11/poly(lactic acid) composites. The effects of the amounts (0.5 to 5 wt%) of graphene nanoplatelets (GNPs) and multiwalled carbon nanotube (MWCNT) nanofillers in carbon fiber (CF)/GNP and CF/MWCNT-reinforced hybrid composites were comparatively investigated. The composites were fabricated through melt blending/compression molding and subsequently characterized in terms of morphological, fiber length, electrical properties, and EMI shielding effectiveness (EMI SE). Morphological imaging revealed a good adhesion between the fillers and the matrix, indicating a favorable interaction. The fiber length analysis demonstrated that fiber lengths were longer in CF/GNP hybrid composites than in CF/MWCNT. The EMI SE measurements showed the synergistic effects of the fillers in the X and Ku bands. The highest EMI SE values at 10 GHz and 16 GHz for the 20CF-5GNP composite were 34 and 40 dB, respectively.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 12","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404782","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

Coaxially Electrocentrifugally Spun Ciprofloxacin/Paclitaxel-Loaded Pullulan/PLGA Core/Sheath Nanofibers and Their In Vitro Cytotoxic Efficacy Toward Melanoma Cells

IF 2.7 3区化学

Journal of Applied Polymer Science Pub Date : 2025-01-22 DOI: 10.1002/app.56759

Kuhelika Das, Huaizhong Xu, Jincheng Gu, Shinichi Sakurai, Vikas Tiwari, Sanjay K. Banerjee, Vimal Katiyar

{"title":"Coaxially Electrocentrifugally Spun Ciprofloxacin/Paclitaxel-Loaded Pullulan/PLGA Core/Sheath Nanofibers and Their In Vitro Cytotoxic Efficacy Toward Melanoma Cells","authors":"Kuhelika Das, Huaizhong Xu, Jincheng Gu, Shinichi Sakurai, Vikas Tiwari, Sanjay K. Banerjee, Vimal Katiyar","doi":"10.1002/app.56759","DOIUrl":"https://doi.org/10.1002/app.56759","url":null,"abstract":"<div>\u0000 \u0000 <p>The study focuses on the fabrication and characterization of ciprofloxacin (CIP)/paclitaxel (PTX)-loaded pullulan/poly(lactic-co-glycolic acid) (PLGA) core/sheath nanofibers using the highly efficient coaxial electrocentrifugal spinning (ECS) technique. In contrast to conventional coaxial electrospinning, the in-house developed coaxial ECS setup used in this study effectively tackled the nozzle cleaning issue. In this study, core/sheath nanofibers with varying core-to-sheath ratio were fabricated, demonstrating suitable mechanical properties for use in biomedical applications. The primary objective was to determine the effect of core-to-sheath ratio on mechanical properties and dual drug release kinetics of the nanofibers. Additionally, the in vitro drug release study demonstrated simultaneous release profiles of CIP from the core and PTX from the sheath. The nanofibers exhibited initial burst release of 6 h, followed by controlled release, making them suitable for targeted therapeutic applications. Moreover, the in vitro cytotoxicity analysis demonstrated enhanced cytotoxic efficacy of the combination of CIP and PTX toward human melanoma A375 cells. The dual drug-loaded 23G/1 mm and 21G/1 mm nanofibers demonstrated 65.37% ± 1.96% and 67.82% ± 1.31% melanoma cell viability after 72 h, indicating significant cytotoxicity. This further highlights the possible potentiality of the nanofibers toward melanoma treatment and their application as dual drug delivery systems with tunable drug release properties.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 16","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612585","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