Journal of Polymer Science最新文献_第6页

Cover Image, Volume 62, Issue 16 封面图片，第 62 卷第 16 期

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2024-08-15 DOI: 10.1002/pola.31261

引用次数: 0

Performance of novel engineered materials from nano‐silica incorporated phenol‐formaldehyde‐flax fabric hybrid composite: Thermal, wear, aging and biodegradability analysis 纳米二氧化硅与苯酚-甲醛-亚麻织物混合复合材料的新型工程材料性能：热、磨损、老化和生物降解性分析

IF 3.4 3区化学

Journal of Polymer Science Pub Date : 2024-08-14 DOI: 10.1002/pol.20240317

Ravindran Lakshmipriya, T. G. Unnikrishnan, C. George Soney, M. S. Sreekala, Thomas Sabu

{"title":"Performance of novel engineered materials from nano‐silica incorporated phenol‐formaldehyde‐flax fabric hybrid composite: Thermal, wear, aging and biodegradability analysis","authors":"Ravindran Lakshmipriya, T. G. Unnikrishnan, C. George Soney, M. S. Sreekala, Thomas Sabu","doi":"10.1002/pol.20240317","DOIUrl":"https://doi.org/10.1002/pol.20240317","url":null,"abstract":"With the growing awareness of environmental issues, natural fiber composites have emerged as a viable substitute for conventional polymer composites. The usage of natural fiber reinforced with nano fillers composites has increased significantly in recent years, especially in the building, automotive, and aerospace industries. This research explores the effect of nano‐silica in tribological, thermal behavior, water diffusion properties and biodegradation of flax fabric/phenol‐formaldehyde hybrid composites. We have fabricated the hybrid composites utilizing compression molding technique. The results showed that after reaching the lowest value for 4 nanosilica (NS), the volumetric wear rose when the addition of nano‐silica was increased. However, the volumetric wear decreased as the weight percentage of nano‐silica improved. At lower sliding speeds (1 m/s), the VW value is between 0.06782 and 0.05455 cm3, but at higher sliding speeds (3 m/s), it is roughly 0.09253–0.06187 cm3. The thermal stability was improved for 1 NS, 2 NS, and 3 NS is 1.20%, 1.64%, and 0.71%, respectively. At three different temperatures (30, 60, and 90°C) the impact of nano‐silica on the water diffusion behavior of PF‐flax fabric hybrid composites was examined. 2 NS showed the least amount of water sorption. it was noted that the three coefficients—Diffusion, Sorption, and Permeation‐were all declining when compared to PF‐flax fabric composites devoid of nano‐silica following computing the Arrhenius values, the free energy change was always negative, indicating the spontaneity of sorption in non‐reinforced samples. The tensile strength of every composite in this investigation was marginally changed by the water aging process.","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"29 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142177532","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

Characteristics and competitive mechanisms of polycondensation and cyclization induced by end-groups in polyamide 6 melt 聚酰胺 6 熔体中端基诱导缩聚和环化的特征和竞争机制

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2024-08-14 DOI: 10.1002/pol.20240463

Kefan Chen, Yongjun Wang, Liangliang Zhou, Junming Dai, Wenxing Chen, Wangyang Lu

{"title":"Characteristics and competitive mechanisms of polycondensation and cyclization induced by end-groups in polyamide 6 melt","authors":"Kefan Chen, Yongjun Wang, Liangliang Zhou, Junming Dai, Wenxing Chen, Wangyang Lu","doi":"10.1002/pol.20240463","DOIUrl":"10.1002/pol.20240463","url":null,"abstract":"Polycondensation and ring-formation reactions are the main factors that cause instability in the molecular structure of commercial polyamide 6 (PA6) during melting. In this study, the mechanisms and interactions of the ring-formation and polycondensation reactions induced by various factors were thoroughly investigated. The findings suggest that the average molecular weight of PA6 increased by 20.4% during melting. The total monomer and oligomer content increased by 79.2%, and the ring-forming reaction was promoted with an increase in temperature. Moreover, a high concentration of the end-amino in PA6 promoted the ring-forming reaction, whereas similar concentrations of the end-amino and end-carboxyl groups were more conducive to the polycondensation reaction. In short, the nitrogen atoms in the end-amino group on the PA6 molecular chain attack the carbonyl carbon at different sites, including the carbonyl carbon in the amide bond and the carbonyl carbon in the end-carboxyl group, which is the key to the strength of the ring-formation and polycondensation reactions.","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 22","pages":"5019-5029"},"PeriodicalIF":3.9,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223450","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 comparative study on thermo-oxidative aging and tribological properties of perfluoroelastomer composites reinforced by different carbon nanomaterials at elevated temperatures: Molecular dynamics simulations 不同碳纳米材料增强的全氟弹性体复合材料在高温下的热氧化老化和摩擦学性能比较研究：分子动力学模拟

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2024-08-13 DOI: 10.1002/pol.20240264

Jing Zhao, Dianhong Qu, Yadi Yang, Tianming Wang

{"title":"A comparative study on thermo-oxidative aging and tribological properties of perfluoroelastomer composites reinforced by different carbon nanomaterials at elevated temperatures: Molecular dynamics simulations","authors":"Jing Zhao, Dianhong Qu, Yadi Yang, Tianming Wang","doi":"10.1002/pol.20240264","DOIUrl":"10.1002/pol.20240264","url":null,"abstract":"Molecular dynamics (MD) simulations are employed to assess the effects of diverse carbon nanomaterials on the thermo-oxidative aging properties and tribological behavior of perfluoroelastomer (FFKM) in high-temperature environments. In this study, carbon nanofillers such as graphene nanosheets (GNS), carbon nanotubes (CNTs), hydroxyl-functionalized graphene (OH-GNS), and hydroxyl-functionalized carbon nanotubes (OH-CNTs) are examined. The aging properties of composite systems are characterized by parameters like cohesive energy density and mean square displacement. The constant strain method is utilized to estimate the shear modulus and bulk modulus. Three-layer friction structures are established to analyze the mechanism of fillers on the tribological behavior of composites by applying shear loads. According to the MD simulation results, the addition of carbon nanofillers enhances FFKM's thermo-oxidative aging performance at 533 K, increases its bulk and shear moduli, and reduces the coefficient of friction and abrasion rate of each composite at high temperatures. Among the four nanofillers, OH-CNTs is the most effective in terms of improving FFKM performance. Stronger dipoledipole interactions and hydrogen bonding are introduced into the system by OH-CNTs, which improves the stability of the filler-matrix interface and produces stronger interfacial interactions. This work offers theoretical predictions for the design and optimization of carbon nanomaterial and FFKM polymer composites.","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 22","pages":"5004-5018"},"PeriodicalIF":3.9,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142223452","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

Correlation of dopant solution on doping mechanism and performance of F4TCNQ-doped P3HT 掺杂剂溶液对掺杂 F4TCNQ 的 P3HT 的掺杂机理和性能的影响

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2024-08-10 DOI: 10.1002/pol.20240427

Jiaxin He, Hongtao Shan, Bingyan Zhu, Xueting Cao, Jianjun Zhou, Hong Huo

{"title":"Correlation of dopant solution on doping mechanism and performance of F4TCNQ-doped P3HT","authors":"Jiaxin He, Hongtao Shan, Bingyan Zhu, Xueting Cao, Jianjun Zhou, Hong Huo","doi":"10.1002/pol.20240427","DOIUrl":"10.1002/pol.20240427","url":null,"abstract":"Understanding the doping mechanism between the dopants and the conjugated polymers (CPs) is crucial for efficiently utilizing the doping process in a controllable manner. In this work, we doped the poly(3-hexylthiophene) (P3HT) films with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ) from a chlorobenzene/acetonitrile (CB/AN) solvent blend and pure AN solvent by using the common sequential doping method. We found that the dissolution ability of the dopant solvent to P3HT and the concentration of the dopant solution were two critical factors to determine the doping process (solution doping or sequential doping) and the doping region (the amorphous or the crystalline phase). When the concentration of the dopant solution was low, solution doping was dominant in the P3HT film doped with F4TCNQ CB/AN solution, and the amorphous regions were doped in the P3HT film doped with F4TCNQ AN solution. With the increase of the dopant solution concentration, the ratio of ordered integer charge transfer (ICT) species, which formed from sequentially doped crystalline domains in the P3HT precast film, increased. Based on the above doping mechanism, a P3HT film with good electrical and tensile performance could be constructed by doping from F4TCNQ CB/AN solution with a relatively low concentration. Our work indicates that the dissolution or swelling ability of the dopant solvent to CP is an important factor in determining not only the doping mechanism but also the electrical and mechanical performances of doped CP films.","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 22","pages":"4993-5003"},"PeriodicalIF":3.9,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141920957","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

Advances in photocrosslinked natural hydrogel-based microspheres for bone repair 用于骨修复的光交联天然水凝胶基微球的研究进展

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2024-08-09 DOI: 10.1002/pol.20240302

Hao-Ru Li, Jing Zhou, Yan-Wen Zhou, Jin-Wei Dao, Dai-Xu Wei, Yong Wang

{"title":"Advances in photocrosslinked natural hydrogel-based microspheres for bone repair","authors":"Hao-Ru Li, Jing Zhou, Yan-Wen Zhou, Jin-Wei Dao, Dai-Xu Wei, Yong Wang","doi":"10.1002/pol.20240302","DOIUrl":"10.1002/pol.20240302","url":null,"abstract":"In recent years, the prevalence of bone diseases is showing an increasing trend, which is mainly attributed to the aging of the global population. However, bone repair and regeneration are still an unsolved problem in the treatment of bone diseases, which include a series of biological events. Photocrosslinked natural hydrogel-based microspheres (PNHMs) are spherical particles composed of photocrosslinked natural hydrogel components. Due to their morphology, injectability, and biocompatibility, PNHMs are widely used in tissue regeneration, particularly for bone defects. In this article, we review the available photocrosslinked natural materials for PNHMs, and then introduce their preparation methods. After that, we summarize the important advanced functionalities of PNHMs. For example, PNHMs can be loaded with different active ingredients to exert anti-inflammatory, antibacterial, and antioxidant effects, while also realizing lubrication due to their specific shape and size distribution. In addition, the function of capturing ions can be realized via coordination. When applied in bone tissue engineering, PNHMs can promote angiogenesis and osteogenesis, with great potential in the treatment of bone diseases. Finally, the challenges and prospects of PNHMs for bone repair are discussed.","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 22","pages":"4966-4992"},"PeriodicalIF":3.9,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pol.20240302","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141923214","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

Is poly(propylene carbonate) biodegradable? Synthesis of poly(propylene carbonate)-containing star and block copolymers and comprehensive investigation on their biodegradation 聚（碳酸丙烯酯）可以生物降解吗？含碳酸丙烯酯的星型和嵌段共聚物的合成及其生物降解综合研究

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2024-08-07 DOI: 10.1002/pol.20240529

Hee-Seong Yang, Woo Yeon Cho, Yeong Hyun Seo, Ju-Hyung Chae, Pyung Cheon Lee, Bun Yeoul Lee, In-Hwan Lee

{"title":"Is poly(propylene carbonate) biodegradable? Synthesis of poly(propylene carbonate)-containing star and block copolymers and comprehensive investigation on their biodegradation","authors":"Hee-Seong Yang, Woo Yeon Cho, Yeong Hyun Seo, Ju-Hyung Chae, Pyung Cheon Lee, Bun Yeoul Lee, In-Hwan Lee","doi":"10.1002/pol.20240529","DOIUrl":"10.1002/pol.20240529","url":null,"abstract":"Storing CO2 and converting it into valuable substances are crucial for addressing climate change. While poly(propylene carbonate) (PPC), formed through the copolymerization of CO2 and propylene oxide, holds promise in commercial applications, practical limitations arise due to inherent property constraints. Additionally, the lack of systematic research on PPC biodegradation complicates its post-use disposal. In this study, we synthesized various polymers, including PPC homopolymers, PPC/castor oil star copolymers, and PPC/poly(l-lactic acid) multiblock copolymers (PPC-mb-PLLAs), not only to mitigate the brittle properties of PPC but also to systematically explore their biodegradability. Both natural soil and industrial composting conditions were employed to assess the biodegradation of the polymers. Furthermore, metagenomic analysis identified the microorganisms responsible for polymer degradation, offering valuable insights into the mechanism of the biodegradation process.","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 22","pages":"4945-4952"},"PeriodicalIF":3.9,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934554","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

Facile preparation and performance of flexible sensors based on polyacrylamide/carboxymethylchitosan/tannin acid hydrogels 基于聚丙烯酰胺/羧甲基壳聚糖/单宁酸水凝胶的柔性传感器的简便制备及其性能

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2024-08-07 DOI: 10.1002/pol.20240292

Haochen Liu, Bei Huang, Guipin Ke, Zheng Cao, Junfeng Cheng, Dong Wang, Fangli Sun, Wenzhong Ma, Chunlin Liu

引用次数: 0

Electrospinning of porous polyvinylidene fluoride microspheres alloyed fibrous membrane with enlarged strain for efficient piezoelectric energy harvesting 电纺多孔聚偏氟乙烯微球合金纤维膜的增大应变，用于高效压电能量采集

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2024-08-05 DOI: 10.1002/pol.20240371

Xuan Zhang, Zhuzhu Shao, Jintao Liu, Xingang Liu, Chuhong Zhang

{"title":"Electrospinning of porous polyvinylidene fluoride microspheres alloyed fibrous membrane with enlarged strain for efficient piezoelectric energy harvesting","authors":"Xuan Zhang, Zhuzhu Shao, Jintao Liu, Xingang Liu, Chuhong Zhang","doi":"10.1002/pol.20240371","DOIUrl":"10.1002/pol.20240371","url":null,"abstract":"Piezoelectric energy harvesters (PEHs) developed from electrospun polyvinylidene fluoride (PVDF) fibers offer flexibility and superior piezoelectric output, making them promising for self-powered systems and sensors. Nonetheless, the electromechanical conversion efficiency of conventional electrospun PVDF fibers is impeded by their limited pressure-strain range. Herein, elastic porous PVDF microspheres are introduced in-situ via electrospinning to craft a piezoelectric membrane with higher compressive strain. The PVDF microspheres are uniformly embedded between the fibers in a sandwich fashion, and their dimension is easily tunable by varying spinning solution's concentration. Moreover, the micropores on the PVDF microspheres created by removing pre-mixed SiO2 template not only elevates the β crystal content of PVDF to 82.19%, but also improves the compressibility, significantly boosting the piezoelectric output. The microsphere alloyed PVDF PEH delivers a piezoelectric output of 33.0 V and a power density of 8 μW/cm2, over 5.8 times that of conventional electrospun PVDF membrane, and can consistently charge lithium-ion batteries. Our research unveils a novel strategic path to modify fiber structured PEHs, advancing their applications in self-powered systems.","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 20","pages":"4789-4800"},"PeriodicalIF":3.9,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934555","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

Microgels based on thermo-responsive poly(N-isopropylacrylamide) as sorbent of bisphenol A and parabens in water 基于热响应聚（N-异丙基丙烯酰胺）的微凝胶作为水中双酚 A 和对羟基苯甲酸酯的吸附剂

IF 3.9 3区化学

Journal of Polymer Science Pub Date : 2024-08-02 DOI: 10.1002/pol.20240203

Daiani C. Leite, Naiara M. F. M. Sampaio, Tiago E. de Oliveira, Izabel C. Riegel-Vidotti, Bruno J. G. da Silva

{"title":"Microgels based on thermo-responsive poly(N-isopropylacrylamide) as sorbent of bisphenol A and parabens in water","authors":"Daiani C. Leite, Naiara M. F. M. Sampaio, Tiago E. de Oliveira, Izabel C. Riegel-Vidotti, Bruno J. G. da Silva","doi":"10.1002/pol.20240203","DOIUrl":"10.1002/pol.20240203","url":null,"abstract":"Smart microgels can be used as sorbents, possessing high surface area and rapid stimuli-responsiveness. A series of poly(N-isopropylacrylamide) (pNIPAM) and pNIPAM-co-starch nanoparticles (pNIPAM-co-SNPs) thermo-responsive microgels were synthesized, presenting different hydrophilic/hydrophobic behavior according to the composition. The adsorption studies were carried out for methylparaben (MPB), ethylparaben (EPB), propylparaben (PPB), butylparaben (BPB), and bisphenol A (BPA), and the extraction and desorption efficiency were determined by high-performance liquid chromatography and spectrophotometric detection (HPLC-UV). The effect of microgel phase transition according to the temperature and the copolymerization with SNPs in each sorptive step was investigated. The extraction of less polar compounds (BPA, PPB, and BPB) above the volume phase transition temperature (VPTT) was favored, driven by a predominant hydrophobic interaction. According to microgel composition, the desorption capacity as a function of temperature can be influenced by hydrophilic interactions and water competition. Molecular dynamics (MD) simulations and binding free energy calculations were performed to provide theoretical evidence about binding energies between pNIPAM and BPA, which experimentally showed the best extraction efficiency results. These findings may provide a strategy for designing high-performance sorptive phases that could remove hydrophilic and hydrophobic compounds from water and a hypothesis about the driving forces of such processes.","PeriodicalId":16888,"journal":{"name":"Journal of Polymer Science","volume":"62 20","pages":"4753-4762"},"PeriodicalIF":3.9,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934394","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