增强CO2在PEG/PPG基交叉连接性聚合物膜上的传输,采用一种以碳醇为基础的ROMP共声器,其体积较大
Md Homayun Kabir1,2,3, Senthil Kannan1,2, Kavya Adot Veetil1,2
1Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon, 22012, South Korea.
Macromolecular rapid communications
|July 26, 2024
概括
新的聚合物膜增强了二氧化碳 (CO2) 的分离. 这些聚乙烯甘 (PEG/PPG) 和碳素基材料具有高的二氧化碳透性和选择性,耐老化和塑化.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 分离科学 分离科学
背景情况:
- 开发先进的聚合物膜对于高效的气体分离技术至关重要.
- 现有的膜往往面临着物理衰老和塑化方面的挑战,限制了它们的长期性能.
- 结合特定的功能组可以调整膜特性,以改善气体传输和选择性.
研究的目的:
- 合成和描述基于PEG/PPG和碳醇衍生物 (2CZPImide) 的新型交联性聚合物膜.
- 为了研究不同单体比对膜结构和气体分离性能的影响.
- 评估膜对物理衰老和塑性化的稳定性.
主要方法:
- 单体:PEG/PPG oligomer (NB-PEG/PPG-NB) 和2CZPImide-NB.NORBORNENE功能化的PEG/PPG和2CZPImide-NB.NORBORNENE功能化的PEG/PPG和2CZPImide-NB.NORBORNENE功能化的PEG/PPG和2CZPImide-NB.NORBORNENE功能化的PEG/PPG和2CZPImide-NB.NORBORNENE功能化的PEG/PPG和2CZPImide-NB.
- 聚合:环开转化聚合 (ROMP) 以产生具有不同摩尔比率 (x:y) 的PEG/PPG-2CZPImide膜.
- 描述:X射线衍射 (XRD),SEM-EDS和纯气体透性研究.
主要成果:
- 加入2CZPImide成功地增加了PEG/PPG段的d间距,提高了气体扩散性.
- 合成的膜实现了高的CO2透性 (311.1418.1屏障) 和对CO2/N2 (39.452.0) 和CO2/CH4 (13.416.0) 的选择性.
- 该PEG/PPG-2CZPImide (6:1) 膜表现出优异的长期稳定性,能够抵抗20天的物理老化和高达10大气层的塑化.
结论:
- 开发的PEG/PPG-2CZPImide膜为CO2分离应用提供了有前途的性能.
- 可调节结构和增强的气体运输特性接近2008年罗伯森上限.
- 膜表现出强大的稳定性,使其适用于苛刻的工业条件.
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