为CO2选择性膜量身定制环开放的甲基聚合物的结构-性质关系
Iqubal Hossain1, Asmaul Husna1, Seung Yeon Yoo1
1Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea.
ACS applied materials & interfaces
|May 11, 2024
概括
使用环开放元解聚合 (ROMP) 合成的高级聚合物膜显示出优异的二氧化碳 (CO2) 分离. 这些膜超过了当前CO2/N2的分离极限,并达到CO2/H2分离的目标.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 开发高效的二氧化碳 (CO2) 分离膜对于环境和工业应用至关重要.
- 现有的膜技术在实现二氧化碳分离的高选择性和透性方面存在局限性.
研究的目的:
- 通过环开放转化聚合 (ROMP) 合成先进的聚合物膜,以提高二氧化碳的分离能力.
- 研究将聚二甲基 (PDMS) 纳入新型共聚合物混合物对二氧化碳分离性能的影响.
主要方法:
- 使用第二代格鲁布斯催化剂 (G2) 用于ROMP合成共聚合物膜.
- 包含了4,4'-oxidianiline (ODA),1,6-hexanediamine (HDA),1-adamantylamine (AA),3,6,9-trioxaundecylamine (TA) 的新型混合物,一个CO2选择性的聚乙烯糖醇/聚乙烯糖醇共聚合物 (Jeffamine2003) 和多聚甲基 (PDMS) 的不同组成.
- 在环境条件和高达20 atm的压力下,用于CO2/N2和CO2/H2分离的特征膜性能.
主要成果:
- 合成膜表现出异常的二氧化碳分离能力,超过了2008年CO2/N2分离的上限.
- 这些膜符合CO2/H2分离的商业目标.
- 在PEG/PPG矩阵中包含多达20%的PDMS显著提高了性能.
- 膜表现出对所有成分的混合规则和透行为的坚持.
- 即使在高压下也保持了强大的抗塑性性能.
结论:
- ROMP是一种可行的方法,用于创建精确设计的聚合物膜,以有效地分离二氧化碳.
- 开发的膜为大型环境和工业二氧化碳捕获过程提供了有前途的解决方案.
- 进一步的研究可以探索对共聚合物组成和结构的优化,以获得更高的分离效率.
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