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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
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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CO2分离的影响

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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 (P-CO2 of 799 Barrer and CO2/N-2 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:我们合成主要是具有物理稳定的刚性聚酰亚胺(PI)和低含量的高度可渗透的橡胶状聚二甲基硅氧烷(PDMS)的共聚物,其通过连接到共聚物的侧链上的CO 2-素离子哌嗪基团交联。 将这些交联的共聚物(XPI-PDMS)塑造成膜,显示出非常高水平的热化学稳定性和优异的CO 2分离性能(P-CO 2的799个禁止和CO2 / N-2偏移率为15.7)。 包含哌嗪基团不仅赋予了这些XPI-PDMS膜,具有增加的CO 2的选择性,而且对CO 2塑化的耐抗性也是良好的抗性。 还研究了PDMS含量对XPI-PDMS形态和CO2分离性质的影响。

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  • 来源
    《RSC Advances》 |2018年第3期|共9页
  • 作者单位

    Incheon Natl Univ Dept Chem Organ Mat Synth Lab Incheon 406772 South Korea;

    Incheon Natl Univ Dept Chem Organ Mat Synth Lab Incheon 406772 South Korea;

    Incheon Natl Univ Dept Chem Organ Mat Synth Lab Incheon 406772 South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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