...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Highly ordered ion-conducting block copolymers by hydrophobic block modification
【24h】

Highly ordered ion-conducting block copolymers by hydrophobic block modification

机译：通过疏水嵌段改性的高度有序的离子导电嵌段共聚物

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

Block copolymer-based AEMs provide advanced materials with tunable properties through manipulation of both the ionic domains for high conductivity and the hydrophobic domains for mechanical integrity. Herein, we describe the ionic conductivity and self-assembly behavior of cationic block copolymers based on quaternized vinyl benzyl chloride (QAVBC) by tuning the hydrophobic block composition with hexyl methacrylate (HMA), lauryl methacrylate (LMA), stearyl methacrylate (SMA), and 4-butylstyrene monomers (BS). The block copolymers showed self-assembly of highly-ordered microstructures as confirmed by small angle X-ray scattering and transmission electron microscopy. A non-ionic block copolymer composed of PVBC100-b-PBeS183 showed less ordered phase separation compared to the quaternized PQAVBC(100)-b-PBeS183 sample. The PQAVBC(100)-b-PBeS107 and PLMA(68)-b-PQAVBC(129) samples with long-range ordered microstructures had approximately three times higher conductivity than that of the less-ordered non-block copolymer based quaternized poly(arylene ether ketone) with a similar ion exchange capacity (similar to 2.8 meq. g(-1)). Moreover, the robust anionic PQAVBC(44)-b-PBS202 block copolymer immersed in liquid water had an ionic conductivity three orders of magnitude greater than the samples under 95% relative humidity conditions due to the increased water uptake of the material under liquid conditions.
机译：基于嵌段共聚物的AEM通过控制高导电性的离子区和机械完整性的疏水区，为高级材料提供了可调节的性能。在本文中，我们通过用甲基丙烯酸己酯（HMA），甲基丙烯酸月桂酯（LMA），甲基丙烯酸十八烷基酯（SMA）调节疏水性嵌段组成来描述基于季铵化乙烯基苄基氯（QAVBC）的阳离子嵌段共聚物的离子电导率和自组装行为，和4-丁基苯乙烯单体（BS）。嵌段共聚物表现出高度有序的微观结构的自组装，这由小角度X射线散射和透射电子显微镜证实。与季铵化的PQAVBC（100）-b-PBeS183样品相比，由PVBC100-b-PBeS183组成的非离子嵌段共聚物显示出较少的有序相分离。具有长程有序微结构的PQAVBC（100）-b-PBeS107和PLMA（68）-b-PQAVBC（129）样品的电导率比基于无序非嵌段共聚物的季铵化聚亚芳基的电导率高大约三倍醚酮）具有相似的离子交换容量（类似于2.8 meq。g（-1））。此外，由于在液体条件下材料的吸水量增加，浸入液态水中的强力阴离子PQAVBC（44）-b-PBS202嵌段共聚物的离子电导率比在95％相对湿度条件下的样品高三个数量级。

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