首页> 外文期刊>RSC Advances >Piperazinium-mediated crosslinked polyimide-polydimethylsiloxane (PI-PDMS) copolymer membranes: the effect of PDMS content on CO2 separation
【24h】

Piperazinium-mediated crosslinked polyimide-polydimethylsiloxane (PI-PDMS) copolymer membranes: the effect of PDMS content on CO2 separation

机译:哌嗪介导的交联聚酰亚胺-聚二甲基硅氧烷(PI-PDMS)共聚物膜:PDMS含量对CO 2 分离的影响

获取原文
           

摘要

We synthesized copolymers consisting mostly of physically stable rigid polyimide (PI) and a low content of highly permeable rubbery polydimethylsiloxane (PDMS), that were crosslinked by CO2-philic ionic piperazinium groups attached to the side chains of the copolymers. These crosslinked copolymers (xPI-PDMSs) were fashioned into membranes that showed very high levels of thermochemical stability and excellent CO2 separation performance (PCO2 of 799 Barrer and CO2/N2 permselectivity of 15.7). The inclusion of the piperazinium groups not only endowed these xPI-PDMS membranes with increased selectivity for CO2, but also good resistance to CO2 plasticization. The effect of PDMS content on morphology and CO2 separation properties of xPI-PDMS was also investigated.
机译:我们合成了主要由物理稳定的硬质聚酰亚胺(PI)和低含量的高渗透性橡胶状聚二甲基硅氧烷(PDMS)组成的共聚物,这些共聚物通过CO 2 -离子性哌嗪鎓离子交联连接到共聚物侧链上的基团。这些交联的共聚物(xPI-PDMSs)被制成具有很高的热化学稳定性和出色的CO 2 分离性能( P < 799 Barrer的small> CO 2 和CO 2 / N 2 的选择性为15.7。包含哌嗪基团不仅使这些xPI-PDMS膜对CO 2 的选择性提高,而且对CO 2 sub> 塑化。还研究了PDMS含量对xPI-PDMS的形态和CO 2 分离特性的影响。

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