Journal of Polymer Research最新文献

Synthesis and salt resistance of non-ionic polymer P (AM/ APEG400/NVP/SM) 非离子聚合物 P（AM/APEG400/NVP/SM）的合成和耐盐性能

IF 2.8 4区化学

Journal of Polymer Research Pub Date : 2024-09-12 DOI: 10.1007/s10965-024-04129-7

Haiyang Tian, Yunfeng Shi, Heng Zhang, Jie Liu, Lei Li, Peng Tang

{"title":"Synthesis and salt resistance of non-ionic polymer P (AM/ APEG400/NVP/SM)","authors":"Haiyang Tian, Yunfeng Shi, Heng Zhang, Jie Liu, Lei Li, Peng Tang","doi":"10.1007/s10965-024-04129-7","DOIUrl":"https://doi.org/10.1007/s10965-024-04129-7","url":null,"abstract":"The non-ionic hydrophobic associative copolymer AANS was synthesized by micellar polymerization using acrylamide (AM), allyl polyoxyethylene ether (APEG400), N-vinyl pyrrolidone (NVP) and stearyl methacrylate (SM) as raw materials, 2, 2'-azobis (2-methylpropionamidine) dihydrochloride (V50) as initiator, sodium dodecyl sulfate (SDS) as surfactant. The temperature resistance, salt resistance and rheological properties of the polymer were tested by viscometer and rheometer. The change of polymer microstructure in salt solution was analyzed by scanning electron microscopy. The viscosity test results showed that when the polymer concentration was higher than CAC, the polymer solution exhibited good salt resistance and presented good salt thickening performance. The effect of temperature on the salt resistance of polymer solution showed different rules. With the increase in temperature, the resistance of the polymer to NaCl decreased gradually, while the resistance of the polymer to CaCl2 increased first and then decreased. The resistance of the polymer to CaCl2 showed a special temperature response. Viscoelastic and shear tests showed that the polymer possessed more robust resistance to extreme sodium chloride concentration than extreme calcium chloride concentration. Micro-morphology and size analysis suggested that the microstructure of the polymer gradually became dense and compact in the salt solution. The results showed that this novel non-ionic hydrophobically associating polymer possessed potential application value in ultra-high salinity reservoirs.","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 amphiphilic block copolymers via RAFT polymerization and preliminary properties exploration of blended membranes with PVDF 通过 RAFT 聚合制备两亲性嵌段共聚物以及与 PVDF 混合膜的初步性能探索

IF 2.8 4区化学

Journal of Polymer Research Pub Date : 2024-09-12 DOI: 10.1007/s10965-024-04112-2

Jianying Ma, Mingdong Li, Liting Sun, Bing Nie, Chunlei Cao

{"title":"Preparation of amphiphilic block copolymers via RAFT polymerization and preliminary properties exploration of blended membranes with PVDF","authors":"Jianying Ma, Mingdong Li, Liting Sun, Bing Nie, Chunlei Cao","doi":"10.1007/s10965-024-04112-2","DOIUrl":"https://doi.org/10.1007/s10965-024-04112-2","url":null,"abstract":"Polyvinylidene difluoride (PVDF) membranes have low surface tension and strong hydrophobicity in water treatment process, and are easily polluted by organic substances. Blending modification can effectively improve the hydrophilicity. The surface of modified membranes are easy to form hydrophilic layer to prevent contact between pollutants and membranes, thus improving the anti-pollution properties. Two amphiphilic block copolymers were synthesized by reversible addition-fragmentation chain transfer (RAFT) radical polymerization. The block copolymers and PVDF were mixed by blending method to form hydrophilic modified membranes. The membranes hydrophilicity, surface PAA coverage, and anti-pollution properties increased with increasing ratios of block copolymers/PVDF and PAA in block copolymers. The anti-pollution properties depended more strongly on membranes surface hydrophilicity when block copolymers chemical structures, that was, the PAA ratios, were changed, rather than the ratios change of block copolymers/PVDF. The block copolymers improved crystallization performance of PVDF because of the role of nucleating agent of block copolymers.","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Thermal and mechanical properties of honeycomb sandwich panel of polyurethane nanocomposite reinforced with nanoclay 用纳米粘土增强聚氨酯纳米复合材料蜂窝夹芯板的热性能和机械性能

IF 2.8 4区化学

Journal of Polymer Research Pub Date : 2024-09-12 DOI: 10.1007/s10965-024-04130-0

Zahra Sajadian, Seyed Mojtaba Zebarjad, Maryam Bonyani

{"title":"Thermal and mechanical properties of honeycomb sandwich panel of polyurethane nanocomposite reinforced with nanoclay","authors":"Zahra Sajadian, Seyed Mojtaba Zebarjad, Maryam Bonyani","doi":"10.1007/s10965-024-04130-0","DOIUrl":"https://doi.org/10.1007/s10965-024-04130-0","url":null,"abstract":"This study investigated the thermal and mechanical properties of polyurethane foam (PUF) sandwich panels reinforced with varying amounts of clay nanoparticles (0, 0.5, 1 and 2 wt%) fabricated using the compression molding process. However, these composites were fixed to cores with a honeycomb structure. The morphology of PUF sandwich panels reinforced with clay nanoparticles was examined by scanning electron microscopy (SEM). The presence of clay nanoparticles in the honeycomb structure let to a reduction in cell size and an increase in the number of cells per unit volume. The impact of clay nanoparticles on the thermal properties of PUF reinforced with clay nanoparticles was investigated using thermogravimetric and dynamic mechanical thermal analysis (DMTA). The results indicated that the incorporation of clay nanoparticles as reinforcement enhanced the thermal properties of the PUF sandwich panel samples. Mechanical characterization technique including compression, three-point bending and drop weight impact tests displayed that the PUF reinforced with 1 wt% clay nanoparticles exhibited the most significant improvement in mechanical properties.","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Simultaneously improving toughness and strength for biodegradable Poly (lactic acid) modified by rice husk and acetyl tributyl citrate 同时提高稻壳和柠檬酸乙酰三丁酯改性的可生物降解聚（乳酸）的韧性和强度

IF 2.8 4区化学

Journal of Polymer Research Pub Date : 2024-09-12 DOI: 10.1007/s10965-024-04127-9

Y. B. Wang, L. Ren, H. N. Gan, Y. G. Han, M. F. Xu, Y. H. Wang, Q. Liu, M. Y. Zhang

{"title":"Simultaneously improving toughness and strength for biodegradable Poly (lactic acid) modified by rice husk and acetyl tributyl citrate","authors":"Y. B. Wang, L. Ren, H. N. Gan, Y. G. Han, M. F. Xu, Y. H. Wang, Q. Liu, M. Y. Zhang","doi":"10.1007/s10965-024-04127-9","DOIUrl":"https://doi.org/10.1007/s10965-024-04127-9","url":null,"abstract":"Developing a stiffness-toughness balance, low-cost, and biodegradable PLA composite is an effective strategy for improving product market competitiveness, reducing dependence on petroleum-based resources and protecting the environment. Rice husk (RH) is extensively used as a filler in polymers, but the addition of too much rice husk into PLA has damaged the toughness of the composite. In this work, fully biodegradable composites with a stiffness-toughness balance and low cost are successfully fabricated through melt blending of PLA, RH and acetyl tributyl citrate (ATBC), named PLAC0, PLAC3, PLAC6, PLAC9, PLAC12, PLAC15, PLAC18, PLAC20 respectively according to amount of ATBC (0phr, 3phr, 6phr, 9phr, 12phr, 15phr, 18phr, 20phr). The results show that bio-based plasticizer ATBC can improve the flowability of PLA composites, further enhancing their processability, which promotes the dispersion of RH in PLA. The impact strength and elongation at break of PLAC20 reach the value of 100 J/m and 148%, achieving an increase of 4.3 and 60.1 times compared with PLAC0, respectively. The torque rheological test shows that the maximum torque and equilibrium torque of PLAC18 decrease by about 67.4% and 63.5% respectively compared to PLAC0. This suggests a decrease in friction between PLA molecular chains, thereby increasing the fluidity of PLA composites and indicating a significant improvement in processing performance. As the ATBC amount increases, the water absorption rate of the composite progressively rises, while the contact angle steadily diminishes, resulting in the improvement for hydrophilicity, thereby broadening its potential applications.","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Study on the structure, crystallization behavior, and properties of PVCH-PE-PVCH Block copolymers PVCH-PE-PVCH 嵌段共聚物的结构、结晶行为和性能研究

IF 2.8 4区化学

Journal of Polymer Research Pub Date : 2024-09-12 DOI: 10.1007/s10965-024-04136-8

Xia Hua, Shangfeng Wu, Ying Wang, Li-Zhi Liu, Yuanxia Wang, Ying Shi, Qi Zhang

{"title":"Study on the structure, crystallization behavior, and properties of PVCH-PE-PVCH Block copolymers","authors":"Xia Hua, Shangfeng Wu, Ying Wang, Li-Zhi Liu, Yuanxia Wang, Ying Shi, Qi Zhang","doi":"10.1007/s10965-024-04136-8","DOIUrl":"https://doi.org/10.1007/s10965-024-04136-8","url":null,"abstract":"Investigating the effects of different segment compositions in block copolymers on their performance is crucial for enhancing material properties and developing new applications. In this study, we investigate the impact of differing segment compositions on the crystallization behavior, microphase separation characteristics, and physical properties of Poly(vinylcyclohexane)-b-poly(ethylene)-b-poly(vinylcyclohexane) (PVCH-PE-PVCH) block copolymers. In PVCH-PE-PVCH block copolymers, the longer PE segments significantly enhance crystallization capability and order. These long PE segments not only facilitate more effective microphase separation, promoting the formation of larger structural domains, but also favor the crystallization of the PE phase, thereby markedly improving the material’s mechanical and optical properties. This reveals the pivotal role of the synergistic effect between long-chain PE distribution and microphase separation in regulating the structure and performance of high-performance polymer materials. Although theoretically, high PE content and high molecular weight are conducive to performance enhancement, this was not fully realized under conditions of weak phase separation capability and shorter PE chains. Therefore, we emphasize that optimizing the performance of these high-performance block copolymers through precise molecular design is feasible, providing powerful strategies and theoretical support for designing novel materials with specific functionalities.","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 epoxy-functionalized acrylonitrile/(ethylene/propylene/diene mischpolymer)/ styrene (AES) copolymer (GAES) resins by high-temperature solution polymerization 通过高温溶液聚合法制备环氧官能化丙烯腈/（乙烯/丙烯/二烯异聚合物）/苯乙烯（AES）共聚物（GAES）树脂

IF 2.8 4区化学

Journal of Polymer Research Pub Date : 2024-09-12 DOI: 10.1007/s10965-024-04101-5

Liting Sun, Mingdong Li, Bing Nie, Jianying Ma, Chunlei Cao

{"title":"Preparation of epoxy-functionalized acrylonitrile/(ethylene/propylene/diene mischpolymer)/ styrene (AES) copolymer (GAES) resins by high-temperature solution polymerization","authors":"Liting Sun, Mingdong Li, Bing Nie, Jianying Ma, Chunlei Cao","doi":"10.1007/s10965-024-04101-5","DOIUrl":"https://doi.org/10.1007/s10965-024-04101-5","url":null,"abstract":"In this paper, epoxy-functionalized AES resins (GAES resins) were prepared by high-temperature solution polymerization, and FTIR spectrograms demonstrated the successful grafting of styrene (St), acrylonitrile (AN), and glycidyl methacrylate (GMA) onto ethylene/propylene/diene mischpolymer (EPDM) rubbers. The influences of reaction conditions, i.e. the content of initiator and chain transfer agent, EPDM and GMA on the grafting ratio, composition of free copolymers, molecular weights and polymer dispersity index (PDI) of GAES resins were detaily investigated. The influence of GMA content on the thermal stabilities of GAES resins was also discussed. Experimental results showed that under the optimized experimental conditions, the highest grafting ratio of GAES resins reached to 39.2% and the grafting efficiency was 35.3%. Under the same reaction conditions, the molecular weights of free copolymers reached to 70,000 g mol−1. The initiator had no obvious influence on the composition of free copolymers, but the component of GMA in free copolymers increased gradually with increasing content of EPDM. Thermogravimetry (TG) analysis results indicated that the incorporation of GMA decreased the thermal stabilities of GAES resins.","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 the performance of polyvinylidene fluoride (PVDF)-based proton exchange membranes with the addition of cellulose acetate for direct methanol fuel cells 在直接甲醇燃料电池中添加醋酸纤维素，提高基于聚偏二氟乙烯（PVDF）的质子交换膜的性能

IF 2.8 4区化学

Journal of Polymer Research Pub Date : 2024-09-11 DOI: 10.1007/s10965-024-04126-w

Muhammad Rehman Asghar, Weibin Yu, Weiqi Zhang, Huaneng Su, Huiyuan Liu, Lei Xing, Xiaohui Yan, Qian Xu

{"title":"Improving the performance of polyvinylidene fluoride (PVDF)-based proton exchange membranes with the addition of cellulose acetate for direct methanol fuel cells","authors":"Muhammad Rehman Asghar, Weibin Yu, Weiqi Zhang, Huaneng Su, Huiyuan Liu, Lei Xing, Xiaohui Yan, Qian Xu","doi":"10.1007/s10965-024-04126-w","DOIUrl":"https://doi.org/10.1007/s10965-024-04126-w","url":null,"abstract":"In this work, a poly (vinylidene fluoride) (PVDF) and cellulose acetate (CA) blend membrane is developed using the solution casting method for a direct methanol fuel cell (DMFC). The CA addition in PVDF polymer reduces the dense structure of the polymer and creates a porous surface by increasing the amorphous region that is confirmed by surface morphology and crystallinity examination tests. The high glass transition temperature of CA boosts the protection from the melting of PVDF membrane and increases the thermal shrinkage that reduces the probability of a short circuit. PVDF and CA with abundant hydroxyl groups and carboxylic groups enhance the water uptake, also the hydrogen bonding in between them promotes the mechanical strength and develops a tortuous structure that allows protons to pass through them and block the methanol crossover. The 60% PVDF and 40% CA blend membrane shows an ion exchange capacity value of 0.91 and a methanol permeability value of 4.21 × 10–7 cm2 s−1, which is lower than that of the conventional Nafion 117 membrane (19.5 × 10–7 cm2 s−1). A direct methanol fuel cell with this membrane represents a power density value of 16.5 mW cm−2 with a voltage and current density values of 0.178 V and 165 mA cm−2 at 1 M methanol concentration and room temperature. Moreover, it shows a 70% voltage retention after 20 h of testing of the cell at room temperature that is superior to that of the commercial Nafion 117 membrane (48% voltage retention).","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Enhanced PBS nanocomposites with ZnO-Coated MWCNT for extending shelf life in sustainable food packaging applications 用 ZnO 包覆 MWCNT 增强 PBS 纳米复合材料，延长可持续食品包装应用中的保质期

IF 2.8 4区化学

Journal of Polymer Research Pub Date : 2024-09-11 DOI: 10.1007/s10965-024-04125-x

Fei-Fan Ge, Wei-Hua Yao, Pranut Potiyaraj, Jarrn-Horng Lin, Chin-San Wu, Lei Meng, Xuemei Zhang, Charasphat Preuksarattanawut, Zheng-Lu Ma, Chi-Hui Tsou

{"title":"Enhanced PBS nanocomposites with ZnO-Coated MWCNT for extending shelf life in sustainable food packaging applications","authors":"Fei-Fan Ge, Wei-Hua Yao, Pranut Potiyaraj, Jarrn-Horng Lin, Chin-San Wu, Lei Meng, Xuemei Zhang, Charasphat Preuksarattanawut, Zheng-Lu Ma, Chi-Hui Tsou","doi":"10.1007/s10965-024-04125-x","DOIUrl":"https://doi.org/10.1007/s10965-024-04125-x","url":null,"abstract":"Poly(butylene succinate) (PBS)-based nanocomposites, reinforced and toughened with ZnO-coated multi-walled carbon nano-tubes (MWCNT-ZnO), demonstrate significantly enhanced properties, making them ideal for potential applied in food packaging applications. This study explores the effects of varying proportions of MWCNT-ZnO on the overall characteristics of these composites. The addition of 0.1 parts per hundred (phr) MWCNT-ZnO optimizes the nanocomposites' mechanical properties, crystallinity, melting temperature, thermal stability, and barrier performance. Specifically, the composite exhibits a 22% increase in tensile strength, a 28.4% rise in yield strength, and a remarkable 95.7% enhancement in the material's elongation at break, compared to the pure PBS matrix. Moreover, these nanocomposites exhibit excellent antibacterial properties, crucial for food preservation and safety. The soil burial test indicates that, except for the addition of 0.1phr which is lower than pure PBS, the biodegradation rate increases with the increasing addition of MWCNT-ZnO. This further suggests that a low nanoparticle filler content can enhance structural compactness, thereby improving the mechanical stability. The study also reveals notable preservation benefits for vegetables. When used for beef packaging, this composite material successfully extends the meat's freshness period, substantially curtails bacterial proliferation, and ensures the beef remains within safe consumption parameters. The combination of enhanced mechanical, thermal, barrier, and antibacterial properties makes PBS/MWCNT-ZnO nanocomposites promising candidates for sustainable and efficient food packaging materials.<h3 data-test=\"abstract-sub-heading\">Graphical Abstracts</h3>\u0000","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Stretchable, high ionic conductivity dual-network hydrogel-polymer electrolytes containing imidazole ionic liquids for supercapacitor and strain sensor 用于超级电容器和应变传感器的含有咪唑离子液体的可拉伸、高离子电导率双网络水凝胶-聚合物电解质

IF 2.8 4区化学

Journal of Polymer Research Pub Date : 2024-09-11 DOI: 10.1007/s10965-024-04132-y

Xiang Liu, Zecheng Ni, Weiyi Li, Ping Wang

{"title":"Stretchable, high ionic conductivity dual-network hydrogel-polymer electrolytes containing imidazole ionic liquids for supercapacitor and strain sensor","authors":"Xiang Liu, Zecheng Ni, Weiyi Li, Ping Wang","doi":"10.1007/s10965-024-04132-y","DOIUrl":"https://doi.org/10.1007/s10965-024-04132-y","url":null,"abstract":"With the rapid development of smart devices and wearable electronic products, there is an increasing demand for flexible, durable, and high-performance energy storage systems. Supercapacitors (SCs) have become strong candidates for the next generation of energy solutions due to their excellent power density, rapid charge and discharge capabilities, and long cycle life. However, the limitations of existing electrolytes in terms of high ionic conductivity, mechanical strength, and stability under extreme conditions have restricted the development of SCs. This study has developed a new type of dual-network hydrogel-polymer electrolyte (DNHPE) based on polyvinyl alcohol (PVA), polyacrylamide (PAM), Lithium bistrifluoromethanesulfonimidate (LiTFSI), and 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4]), to enhance mechanical performance and ionic conductivity. The DNHPE-1 exhibits outstanding ionic conductivity (9.34 S m−1), stretchability (650%), and thermal stability, which are crucial for the development of SCs and wearable sensors. In addition, the high strain sensitivity of the DNHPE-1 makes it an ideal material for strain sensors, capable of accurately monitoring various human movements. The research results show that the supercapacitor (SC) based on DNHPE-1 can operate effectively under different environmental conditions, demonstrating its broad application prospects in flexible, wearable smart devices.","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Modification of graphite to increase reaction rate in styrene/graphite in situ polymerization system 改性石墨以提高苯乙烯/石墨原位聚合体系的反应速率

IF 2.8 4区化学

Journal of Polymer Research Pub Date : 2024-09-09 DOI: 10.1007/s10965-024-04135-9

Hossein Abedini, Seyed Saeid Tayebi, Mohammad Daneshgar

{"title":"Modification of graphite to increase reaction rate in styrene/graphite in situ polymerization system","authors":"Hossein Abedini, Seyed Saeid Tayebi, Mohammad Daneshgar","doi":"10.1007/s10965-024-04135-9","DOIUrl":"https://doi.org/10.1007/s10965-024-04135-9","url":null,"abstract":"In this work, with the aim of increasing the monomer conversion rate in the styrene-graphite in situ polymerization system, graphite modification methods have been investigated. Modification of the graphite in the presence of nitric acid, sodium hydroxide or sodium dodecyl benzene sulfate (SDBS) was investigated with five different methods in order to reduce its adverse effects on the polymerization rate of styrene. The most effective modification approach was determined using quantitative data such as polymerization conversion and graphite dispersion in organic phase. Compared to other modified samples and unmodified graphite, graphite modified in sodium hydroxide solution with SDBS showed the most compatibility with the polymerization system and caused a significant increase in the monomer conversion rate. Monomer conversion increases by 22% and 29% respectively in the presence of 0.5% and 2% of the best modified graphite compared to non-modified graphite. Also, the results showed that this modification method stabilizes the suspension of graphite particles in styrene for a longer period of time than other methods.","PeriodicalId":658,"journal":{"name":"Journal of Polymer Research","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142208363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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