SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 53 ›› Issue (1): 421-430.DOI: 10.1016/j.cjche.2022.01.010

• Full Length Article • 上一篇    

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

Jie Jiang1,2, Wei Cheng1,2, Qiuyu Tang1,2, Xun Pan3, Jinjin Li1, Ling Zhao1,4, Zhenhao Xi1,2, Weikang Yuan1   

  1. 1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    2. Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    3. Flinders Institute for Nanoscale Science and Technology, Flinders University, SA 5042, Australia;
    4. College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China
  • 收稿日期:2021-11-04 修回日期:2022-01-06 出版日期:2023-01-28 发布日期:2023-04-08
  • 通讯作者: Zhenhao Xi,E-mail:zhhxi@ecust.edu.cn
  • 基金资助:
    This work was financially supported by the National Natural Science Foundation of China (21978089 and 21878256), the Fundamental Research Funds for the Central Universities (22221818010), and the 111 Project (B20031), the Program of Shanghai Subject Chief Scientist (21XD1433000).

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

Jie Jiang1,2, Wei Cheng1,2, Qiuyu Tang1,2, Xun Pan3, Jinjin Li1, Ling Zhao1,4, Zhenhao Xi1,2, Weikang Yuan1   

  1. 1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    2. Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    3. Flinders Institute for Nanoscale Science and Technology, Flinders University, SA 5042, Australia;
    4. College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China
  • Received:2021-11-04 Revised:2022-01-06 Online:2023-01-28 Published:2023-04-08
  • Contact: Zhenhao Xi,E-mail:zhhxi@ecust.edu.cn
  • Supported by:
    This work was financially supported by the National Natural Science Foundation of China (21978089 and 21878256), the Fundamental Research Funds for the Central Universities (22221818010), and the 111 Project (B20031), the Program of Shanghai Subject Chief Scientist (21XD1433000).

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 1.07×10–8 cm2·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 5.6×109 to 6.5×1010 Ω, which makes PEBA potential candidate as permanent antistatic agent.

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

Abstract: 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 1.07×10–8 cm2·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 5.6×109 to 6.5×1010 Ω, which makes PEBA potential candidate as permanent antistatic agent.

Key words: Poly(ether-b-amide)s, Moisture-responsive, Antistatic, In situ FT-IR, 2D FT-IR analysis