• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Preparation of anion exchange membranes based on pyridine functionalized poly(vinyl alcohol) crosslinked by 1,4-dichlorobutane
【24h】

Preparation of anion exchange membranes based on pyridine functionalized poly(vinyl alcohol) crosslinked by 1,4-dichlorobutane

机译：基于吡啶官能化聚（乙烯醇）的阴离子交换膜的制备交联1,4-二氯丁烷交联

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A series of anion exchange membranes [pyridine functionalized-poly(vinyl alcohol)-1,4-dichlorobutane (PVA-PY-DLx)] were synthesized by using PVA-PY as polymer matrix and DL as crosslinker and iodomethane as quaternization reagent. During the experiment, pyridine groups grafted on PVA were transformed into quaternary ammonium group during the formation process of the crosslinked structure and the quaternization routine by iodomethane. The characterization results revealed that the PVA-PY-DLx membranes have been successfully prepared and the crystallinity increases with increase of DL. PVA-PY-DLx membranes have smooth and uniform morphology. The introduction of crosslinked structure improves the mechanical properties and dimensional stability of the PVA-PY-DLx membrane, enhances the alkali resistance. When the mass content of DL was 4.0%, composite membrane had the maximum tensile strength (44.2 MPa), and the OH- conductivity reaches 1.05 x 10(-2) S cm(-1) at 70 degrees C. The accelerated aging experiment was carried out in 3 mol L-1 potassium hydroxide (KOH) solution for 120 h at 80 degrees C, which revealed that the anionic conductivity of PVA-PY-DL4.0 membrane retains 79.6% of its initial conductivity, showing better stability of alkali stability. Methanol permeability of PVA-PY-DLx membranes was only the 0.37-0.72% of the Nafion-117 membrane in 3 mol L-1 methanol at 60 degrees C. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47395.
机译：通过使用PVA-PY作为聚合物基质和DL作为交联剂和碘甲烷作为季铵化试剂，合成了一系列阴离子交换膜[吡啶官能化 - 聚（乙烯醇）-1,4-二氯丁烷（PVA-PY-DLX）]合成。在实验期间，在交联结构的形成过程和碘甲烷的季铵化常规期间将PVA接枝的吡啶基团转化为季铵基。表征结果表明，已经成功制备了PVA-PY-DLX膜，并且结晶度随着DL的增加而增加。 PVA-PY-DLX膜具有光滑均匀的形态。交联结构的引入改善了PVA-PY-DLX膜的机械性能和尺寸稳定性，增强了碱性抗性。当DL的质量含量为4.0％时，复合膜具有最大拉伸强度（44.2MPa），并且在70℃下，OH-电导率达到1.05×10（-2）厘米（-1）。加速老化实验在80℃下在3摩尔L-1氢氧化钾（KOH）溶液中进行120小时，显示PVA-PY-DL4.0膜的阴离子导电性保留其初始导电性的79.6％，显示出更好的稳定性碱稳定性。 PVA-PY-DLX膜的甲醇渗透性在3mol L-1甲醇中仅为0.37-0.72％，在60℃下为60℃（c）2018 Wiley期刊，Inc .J.Phill。聚合物。 SCI。 2019,136,47395。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号