文献类型：期刊文献

英文题名：Multiblock poly(ether-b-amide) copolymers comprised of PA1212 and PPO-PEO-PPO with specific moisture-responsive and antistatic properties

作者：Jiang, Jie[1,2];Pan, Xun[3];Li, Jinjin[1];Zhao, Ling[1,4];Xi, Zhenhao[1,2];Yuan, Weikang[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China;[3]Flinders Univ S Australia, Flinders Inst Nanoscale Sci & Technol, Adelaide, SA 5042, Australia;[4]Xinjiang Univ, Coll Chem & Chem Engn, Urumqi 830046, Peoples R China

年份：2023

卷号：53

起止页码：421

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20230213380785);WOS:【SCI-EXPANDED(收录号:WOS:000971586800001)】；

基金：Acknowledgements This work was financially supported by the National Natural Science Foundation of China (21978089 and 21878256) , the Fun- damental Research Funds for the Central Universities (22221818010) , and the 111 Project (B20031) , the Program of Shanghai Subject Chief Scientist (21XD1433000) .

语种：英文

外文关键词：Poly(ether-b-amide)s; Moisture-responsive; Antistatic; In situ FT-IR; 2D FT-IR analysis

摘要：Functional multiblock poly(ether-b-amide) (PEBA) copolymers, comprised of PA1212 (polyamide 1212) as hard segments and Jeffamine ED-2003 as soft segments, were successfully prepared via two-step melt polycondensation without any amidation catalyst. Here, using diamino-terminated poly(propylene oxide)-poly(ethylene oxide)-poly(propylene oxide) (PPO-PEO-PPO), Jeffamine ED-2003, enhances the compatibility between polyamide oligomer and polyether, which is better than the traditional route using hydroxyl-terminated polyether. The chemical structure of multiblock PEBAs, as well as the microphase separated structure with crystalline phase of polyamide and polyether, were confirmed by heteronuclear multiple-bond correlation spectrum, heteronuclear multiple quantum correlation spectrum, Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry and dynamic mechanical analysis. The hydrophilic PEBA copolymers showed water adsorption ranging from 87.3% to 17.1% depending on the polyether content, and specially showed moisture responsive behavior within seconds when exposed to moisture. The corresponding mechanism was studied using time-resolved attenuated total reflectance FT-IR spectroscopy in the molecular level and the water diffusion coefficient was estimated to be 1.07 X 10(-8) cm(2).s(-1). Two-dimensional correlation FT-IR spectra analysis was performed to confirm that the interaction between water and polyether phase was in preference to that between water and polyamide matrix, and water molecule only forms hydrogen bond with the polyether segment. Due to the incorporation of PEO segments, the PEBAs have the surface resistivity varying from 5.6 X 10(9) to 6.5 X 10(10) Omega, which makes PEBA potential candidate as permanent antistatic agent. (c) 2022 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.