Chinese Journal of Polymer Science最新文献_第10页

Side-Chain-Type Polyimide-Cu Complexes with Suppressed Activation Energy of Relaxation for Advanced High-Temperature Capacitor 用于先进高温电容器的具有抑制弛豫活化能的侧链型聚酰亚胺-铜配合物

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-05-17 DOI: 10.1007/s10118-024-3131-7

Bai-Yang Zhou, Ze-Tong Ma, Shi-Long Zhong, Zhen-Jie Huang, Qi Guo, Deng-Chong Feng, Zhong-Ke Yuan, Shao-Lin Lu, Yu-Zhao Yang, Cheng Wang, Ding-Shan Yu, Xu-Dong Chen

{"title":"Side-Chain-Type Polyimide-Cu Complexes with Suppressed Activation Energy of Relaxation for Advanced High-Temperature Capacitor","authors":"Bai-Yang Zhou, Ze-Tong Ma, Shi-Long Zhong, Zhen-Jie Huang, Qi Guo, Deng-Chong Feng, Zhong-Ke Yuan, Shao-Lin Lu, Yu-Zhao Yang, Cheng Wang, Ding-Shan Yu, Xu-Dong Chen","doi":"10.1007/s10118-024-3131-7","DOIUrl":"10.1007/s10118-024-3131-7","url":null,"abstract":"<div><p>The burgeoning growth of the new energy vehicles and aviation industry has escalated the need for energy storage capacitors capable of stable operation in harsh environments. The advent of metal-polyimide complexes has illuminated a novel approach for preparing temperature-resistant capacitors. However, the general application of these metal-polyimide complexes is impeded by the high dielectric loss and low breakdown strength, consequences of main-chain coordination and excessive metal ions content. Herein, our study proposes a novel polyimide-Cu complex material (POP-Cu) predicated on side-chain-type pyridine-Cu coordination, utilizing the structural backbone PMDA-ODA of mature commercial PI (Kapton) with reliable performance. Owing to the high degree of freedom afforded by the side chain with suppressed relaxation activation energy and the long-range electron delocalization formed by <i>d</i>-<i>π</i> coordination, the dielectric constant of this material containing merely 2.7 mol% Cu increases from 3.25 (POPI) to 5.58, while maintaining a remarkably low dielectric loss of 0.0066. Meanwhile, this material exhibits a substantial DC breakdown strength of 436.2 MV·m<sup>−1</sup> and a high energy density of 5.42 J·cm<sup>−3</sup>, coupled with superior mechanical and thermal properties. Even at 150 °C, it retains over 90% of its room-temperature energy density, demonstrating notable dielectric stability under high temperatures. These attributes underscore its promising application for capacitors operating in harsh environments.</p></div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 8","pages":"1038 - 1048"},"PeriodicalIF":4.1,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141126494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Self-Healing Elastomer with Extremely High Toughness Achieved by Acylsemicarbazide Hydrogen Bonding and Cu2+-Neocuproine Coordination Interactions 通过酰基氨基脲氢键和 Cu2+-Neocuproine 配位相互作用实现极高韧性的自愈合弹性体

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-05-17 DOI: 10.1007/s10118-024-3129-1

Xiao-Ming An, Yi-Ping Wang, Tang-Song Zhu, Chong Xing, Xu-Dong Jia, Qiu-Hong Zhang

{"title":"A Self-Healing Elastomer with Extremely High Toughness Achieved by Acylsemicarbazide Hydrogen Bonding and Cu2+-Neocuproine Coordination Interactions","authors":"Xiao-Ming An, Yi-Ping Wang, Tang-Song Zhu, Chong Xing, Xu-Dong Jia, Qiu-Hong Zhang","doi":"10.1007/s10118-024-3129-1","DOIUrl":"10.1007/s10118-024-3129-1","url":null,"abstract":"<div><p>Elastomers with high mechanical toughness can guarantee their durability during service life. Self-healing ability, as well as recyclability, can also extend the life of materials and save the consuming cost of the materials. Many efforts have been dedicated to promoting the mechanical toughness as well as the self-healing capability of elastomers at the same time, while it remains a challenge to balance the trade-off between the above properties in one system. Herein we proposed a molecular design driven by dual interactions of acylsemicarbazide hydrogen bonding and Cu<sup>2+</sup>-neocuproine coordination simultaneously. By introducing the reversible multiple hydrogen bonds and strong coordination bonds, we successfully fabricated an extremely tough and self-healing elastomer. The elastomer can achieve an impressive top-notch toughness of 491 MJ/m<sup>3</sup>. Furthermore, it boasted rapid elastic restorability within 10 min and outstanding crack tolerance with high fracture energy (152.6 kJ/m<sup>2</sup>). Benefiting from the combination of dynamic interactions, the material was able to self-repair under 80 °C conveniently and could be reprocessed to restore the exceptional mechanical properties.</p></div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 10","pages":"1425 - 1434"},"PeriodicalIF":4.1,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141126327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of Low-temperature Imidization on Properties and Aggregation Structures of Polyimide Films with Different Rigidity 低温酰亚胺化对不同刚性聚酰亚胺薄膜性能和聚合结构的影响

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-05-17 DOI: 10.1007/s10118-024-3137-1

Yan Jia, Lei Zhai, Song Mo, Yi Liu, Li-Xin Liu, Xin-Yu Du, Min-Hui He, Lin Fan

{"title":"Effect of Low-temperature Imidization on Properties and Aggregation Structures of Polyimide Films with Different Rigidity","authors":"Yan Jia, Lei Zhai, Song Mo, Yi Liu, Li-Xin Liu, Xin-Yu Du, Min-Hui He, Lin Fan","doi":"10.1007/s10118-024-3137-1","DOIUrl":"10.1007/s10118-024-3137-1","url":null,"abstract":"<div><p>The traditional high-temperature preparation process of polyimide can cause many problems and limits the wider application in extreme conditions. An important challenge to be solved urgently is the reduction of imidization temperature. In this work, twelve kinds of polyimide films with different chain rigidity were prepared at low temperature of 200 °C, in the absence or presence of imidazole used as the catalyst. The molecular rigidity and free volume were theoretically calculated, and relationship between structure and properties were systematically studied. The results show that imidization reaction under low temperatures is significantly affected by the rigidity of molecular chains. The rigid structure of polyimide is not conducive to the low-temperature imidization, but this adverse effect can be eliminated by adding catalyst, resulting the notably increased imidization degree. The optical and thermal properties can be improved to a certain extent for the chemically catalyzed system, resulting in relatively higher heat resistance and thermal stability. While the mechanical performance could be determined by complicating factors, greatly different from polyimide films prepared by high temperature method. To investigate aggregation structures of films, the effect of chain rigidity and catalyst on the stacking or orientation of molecular chains was further elaborated. This work can contribute to the understanding of chemically catalyzed imidization that is rarely reported in the existing research, and will provide guidance for the low-temperature preparation of high-performance polyimides.</p></div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 8","pages":"1134 - 1146"},"PeriodicalIF":4.1,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141126634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Research on the Dynamic Compressibility of Polyurethane Microcellular Elastomer and its Application for Impact Resistance 聚氨酯微孔弹性体的动态压缩性及其在抗冲击中的应用研究

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-05-17 DOI: 10.1007/s10118-024-3134-4

Zhi-Ying Zhao, Hao Jiang, Xiao-Dong Li, Xu-Dong Zhang, Xing Su, Mei-Shuai Zou

{"title":"Research on the Dynamic Compressibility of Polyurethane Microcellular Elastomer and its Application for Impact Resistance","authors":"Zhi-Ying Zhao, Hao Jiang, Xiao-Dong Li, Xu-Dong Zhang, Xing Su, Mei-Shuai Zou","doi":"10.1007/s10118-024-3134-4","DOIUrl":"10.1007/s10118-024-3134-4","url":null,"abstract":"<div><p>The packaging materials with cushioning performance are used to prevent the internal contents from being damaged by the impact and vibration of external forces. The polyurethane microcellular elastomers (PUMEs) can absorb energy through cell collapse and molecular chain creep. In this study, PUMEs with different densities were investigated by scanning electron microscopy, dynamic mechanical analysis and dynamic compression tests. PUMEs exhibited significant impact resistance and the maximum peak stress attenuation ratio reached 73.33%. The protective equipment was made by PUME with the optimal density of 600 kg/m<sup>3</sup>, and then the acceleration sensing device installed with the same protective equipment fell from a height of 3, 5 and 10 m to evaluate the energy-absorbing property and reusability of PUMEs. The results showed that PUMEs equipment reduced the peak acceleration of the device by 93.84%, with a maximum deviation of 9% between actual test and simulation, and shortened the impact time of first landing by 57.39%. In addition, the equipment PUMEs equipment could effectively reduce the stress on the protected items.</p></div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 8","pages":"1185 - 1197"},"PeriodicalIF":4.1,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141126590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

3D Printed Polyimide/Silica Composite Aerogels for Customizable Thermal Insulation from −50 °C to 1300 °C 三维打印聚酰亚胺/二氧化硅复合气凝胶，可在 -50 °C 至 1300 °C 温度范围内定制隔热性能

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-05-17 DOI: 10.1007/s10118-024-3130-8

Dingyi Yu, Tiantian Xue, Zhuocheng Ma, Zaiyin Hu, Lijuan Long, Yue-E Miao, Wei Fan, Tianxi Liu

引用次数: 0

Glucose-sensitive Membrane with PBA-based Contraction-type Linear Polymer as Chemical Valves Prepared by Surface Grafting 用表面接枝法制备以 PBA 为基础的收缩型线性聚合物作为化学阀门的葡萄糖敏感膜

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-05-17 DOI: 10.1007/s10118-024-3135-3

Chun-Peng Zhang, Si-Jia Gao, Ying Luo, Lei Zou, Yong-Jun Zhang

引用次数: 0

A Fluorine-Functionalized 3D Covalent Organic Framework with Entangled 2D Layers 具有纠缠二维层的氟官能化三维共价有机框架

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-05-10 DOI: 10.1007/s10118-024-3133-5

Li-Bang Xiao, Zi-Han Wu, Jun-Jie Xin, Yuan-Peng Cheng, Bo Gui, Jun-Liang Sun, Cheng Wang

引用次数: 0

Self-healable and Robust Film Based on Electroactive Polymer Brush as Electrode for Flexible Supercapacitor 用于柔性超级电容器电极的基于电活性聚合物刷的自愈合坚固薄膜

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-05-10 DOI: 10.1007/s10118-024-3113-9

Maria P. Sokolova, Vitaly K. Vorobiov, Nikolay N. Smirnov, Ivan S. Kuryndin, Natalya V. Bobrova, Michael A. Smirnov

{"title":"Self-healable and Robust Film Based on Electroactive Polymer Brush as Electrode for Flexible Supercapacitor","authors":"Maria P. Sokolova, Vitaly K. Vorobiov, Nikolay N. Smirnov, Ivan S. Kuryndin, Natalya V. Bobrova, Michael A. Smirnov","doi":"10.1007/s10118-024-3113-9","DOIUrl":"10.1007/s10118-024-3113-9","url":null,"abstract":"<div><p>The aim of this study was to develop self-healable and robust electroconductive film based on polyaniline copolymer for application as electrode in flexible supercapacitor. For this purpose, the electroconductive polymer brushes (EPB) was elaborated. The synthesis of EPB is based on graft polymerizations of acrylamide (AAm) on poly(vinyl alcohol) (PVA) with formation of PVA-PAAm polymer brush and subsequent graft copolymerization of aniline and <i>p</i>-phenylenediamine on PVA-PAAm resulting in formation of EPB with electroconducting copoly(aniline-<i>co-p</i>-phenylenediamine) (PAPhDA). It was found that the ratio between PVA and PAAm at the first stage greatly influence the electrochemical performance of the EPBs. Electroconducting films were prepared by casting of EPB solution with subsequent drying. Investigation of electrical current distribution through the film with AFM reveal more uniform distribution of PAPhDA in EPB in comparison with reference PVA-PAPhDA and PAAm-PAPhDA samples. It was demonstrated that mechanical characteristics and electrical conductivity values of films restore at large extent after curring and self-healing under optimal relative humidity level (58%). The flexile supercapacitor cell with EPB film electrodes demonstrate specific capacitance 602 mF·cm<sup>−2</sup> at the current density of 1 mA·cm<sup>−2</sup> and retention 94% of initial capacitance after 5000 charge/discharge cycles.</p></div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 8","pages":"1049 - 1059"},"PeriodicalIF":4.1,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10118-024-3113-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140992917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Structural Evolution of Ultra-High Molecular Weight Polyethylene Low-Entangled Films with Reserved Shish Crystals During Hot Stretching 超高分子量聚乙烯低缠结薄膜在热拉伸过程中保留的 Shish 晶体的结构演变

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-05-10 DOI: 10.1007/s10118-024-3143-3

Jia-Wei Gao, Li Chen, Ye-Shun Zhong, Chao-Wei Xing, Yi-Guo Li, Zong-Bao Wang

{"title":"Structural Evolution of Ultra-High Molecular Weight Polyethylene Low-Entangled Films with Reserved Shish Crystals During Hot Stretching","authors":"Jia-Wei Gao, Li Chen, Ye-Shun Zhong, Chao-Wei Xing, Yi-Guo Li, Zong-Bao Wang","doi":"10.1007/s10118-024-3143-3","DOIUrl":"10.1007/s10118-024-3143-3","url":null,"abstract":"<div><p>Shish crystals are crucial to achieving high performance low-dimensional ultra-high molecular weight polyethylene (UHMWPE) products. Typically, high stretch and shear flow fields are necessary for the formation of shish crystals. In this study, UHMWPE gel films with reserved shish crystals were prepared by gel molding, the structural evolution and properties of UHMWPE films stretched at temperatures of 100, 110, 120 and 130 °C were investigated by <i>in situ</i> small-angle X-ray scattering (SAXS)/ultra-small-angle X-ray scattering (USAXS)/wide-angle X-ray diffraction (WAXD) measurements as well as scanning electron microscopy (SEM) and differential scanning calorimetry (DSC) measurements. Our findings showed that the reserved shish crystals can facilitate the formation and structural evolution of shish-kebab crystals during the hot stretching. Additionally, the reserved shish crystals promote the structural evolution of UHMWPE films to a greater extent when stretched at 120 and 130 °C, compared to 100 and 110 °C, resulting in higher crystallinity, orientation, thermal properties, breaking strength and Young’s modulus. Compared to UHMWPE high-entangled films with reserved shish crystals prepared by compression molding, UHMWPE low-entangled films with reserved shish crystals prepared by gel molding are more effective in inducing the formation and evolution of shish-kebab crystals during the hot stretching, resulting in increased breaking strength and Young’s modulus.</p></div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 8","pages":"1227 - 1242"},"PeriodicalIF":4.1,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141128908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Radiative-Cooling Hierarchical Aligned Porous Poly(vinylidene fluoride) Film by Freeze-Thaw-Promoted Nonsolvent-Induced Phase Separation 通过冻融促进的非溶剂诱导相分离实现辐射冷却分层对齐多孔聚偏氟乙烯薄膜

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-05-07 DOI: 10.1007/s10118-024-3128-2

Yiting Zhang, Jiahui Sun, Yufeng Wang, Yunchen Wu, Chun Huang, Chao Zhang, Tianxi Liu

{"title":"A Radiative-Cooling Hierarchical Aligned Porous Poly(vinylidene fluoride) Film by Freeze-Thaw-Promoted Nonsolvent-Induced Phase Separation","authors":"Yiting Zhang, Jiahui Sun, Yufeng Wang, Yunchen Wu, Chun Huang, Chao Zhang, Tianxi Liu","doi":"10.1007/s10118-024-3128-2","DOIUrl":"10.1007/s10118-024-3128-2","url":null,"abstract":"<div><p>Passive daytime radiative cooling (PDRC) is an innovative and sustainable cooling technology that holds immense potential for addressing the energy crisis. Despite the numerous reports on radiative coolers, the design of a straightforward, efficient, and readily producible system remains a challenge. Herein, we present the development of a hierarchical aligned porous poly(vinylidene fluoride) (HAP-PVDF) film through a freeze-thaw-promoted nonsolvent-induced phase separation strategy. This film features oriented microporous arrays in conjunction with random nanopores, enabling efficient radiative cooling performance under direct sunlight conditions. The incorporation of both micro- and nano-pores in the HAP-PVDF film results in a remarkable solar reflectance of 97% and a sufficiently high infrared thermal emissivity of 96%, facilitating sub-environmental cooling at 18.3 °C on sunny days and 13.1 °C on cloudy days. Additionally, the HAP-PVDF film also exhibits exceptional flexibility and hydrophobicity. Theoretical calculations further confirm a radiative cooling power of 94.8 W·m<sup>−2</sup> under a solar intensity of 1000 W·m<sup>−2</sup>, demonstrating a performance comparable to the majority of reported radiative coolers.</p></div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 7","pages":"976 - 983"},"PeriodicalIF":4.1,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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