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通过在结合的微孔聚合物膜中设计的刚性和相互连接的围来实现选择形状的分子分离

Yanqiu Lu^1,2,3, Hao Deng¹, Liling Zhang⁴

¹Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|April 17, 2025

概括

结合的微孔聚合物膜精确地控制孔径大小,以基于形状的分子分离. 这些先进的膜有效地分离线性和重的分子和同体.

科学领域:

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.
聚合物化学聚合物化学

背景情况:

分离具有相似大小但不同形状的分子是化学和材料科学中的一个重大挑战.
现有的分离技术经常在基于微妙的结构差异的高精度分子歧视方面扎.

研究的目的:

开发先进的结合微孔聚合物 (CMP) 膜,以实现高效的基于形状的分子分离.
为了研究膜结构,孔隙特性和分离性能之间的关系.

主要方法:

使用扩散调节电聚合物制备CMP膜,以精确控制孔网.
调整基于碳素的脊柱来调整毛孔大小,连接性和封闭性质.
对各种分子系统的膜结构的表征和分离性能的评估.

主要成果:

有狭窄分布的网络孔的CMP膜成功合成,防止缺陷和聚合孔.
对于具有线性和重形状的分子 (≈1000 g mol-1) 实现了高分离因子 (高达134).
证明了线性/分支化异构体 (<100 g mol-1) 的全液相分离,具有高丰度 (63.35 mol%) 和优越的透度.

结论:

扩散调节的电聚合提供了对CMP膜制造的精确控制,以进行定制的分离.
刚性,相互连接的孔隙结构有效地强制执行分子形状选择性.
这些CMP膜代表了高性能分子分离的重大进步,特别是对于具有挑战性的同位素分离.

关键词:

结合的微孔聚合物聚合物.选择形状的分子分离.小有机混合物分离方法具有耐溶剂的膜膜.

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