提高透性:揭示混合矩阵膜中微孔有机聚合物的潜力
Alba Torres1,2, Cenit Soto1,2, Francisco Javier Carmona1,2
1Surfaces and Porous Materials (SMAP), Associated Research Unit to CSIC, Universidad de Valladolid, Facultad de Ciencias, Paseo Belén 7, Valladolid E-47011, Spain.
ACS applied polymer materials
|August 15, 2024
概括
将微孔有机聚合物填充剂 (TFAP-Trp) 添加到基于聚胺的混合矩阵膜中,可以显著提高气体透性. 这种增强对于低至中等透度矩阵特别有效,可以提高整体分离性能,而不会影响选择性.
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.
- 聚合物科学 聚合物科学
背景情况:
- 混合矩阵膜 (MMM) 对于气体分离至关重要.
- 聚合物矩阵具有不同的性能,但往往面临透性限制.
- 结合多孔填充剂可以提高膜性能.
研究的目的:
- 研究特定微孔有机聚合物填充剂 (TFAP-Trp) 对基于聚胺的MMM的特性的影响.
- 量化分析填充剂添加与膜透性和选择性的变化之间的相关性.
- 评估TFAP-Trp作为气体分离膜性能增强添加剂的潜力.
主要方法:
- 使用七种不同的聚胺基质和固定10%度的TFAP-Trp填充剂制造MMM.
- 测量纯气体 (He,N2,O2,CH4,CO2) 的材料性能和分离性能.
- 对透性增加的定量分析,相关性和适应现有的双相系统模型.
主要成果:
- 添加TFAP-Trp显著增加了MMM的透性,特别是对于具有低至中等内在透性的矩阵.
- 增加的MMM的透性与TFAP-Trp填充剂的高透性贡献有很强的相关性.
- 在所有MMM中,选择性大致保持不变,而透性显著增加.
- 透率增加和填充剂含量之间的关系大约是线性的,与双相模型相一致.
结论:
- 微多孔有机聚合物TFAP-Trp有效地提高了基于聚胺的MMM的透性.
- TFAP-Trp是一种有益的添加剂,特别是在低透性聚合物矩阵中,从而提高了气体分离性能.
- 该研究验证了高透性填充剂在MMM中的作用,并与预测性能的既定模型保持一致.
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