常州大学学报（自然科学版）2026，Vol.38Issue(4)：10-21,12.DOI:10.3969/j.issn.2095-0411.2026.04.002
氨基类型对PDMS复合膜CO2分离性能的影响
Effect of amine types on CO2 separation performance through PDMS membranes
摘要
Abstract
The greenhouse effect tended to be more serious due to the excessive CO2 emissions.How to efficiently separate CO2 mixtures is one of the research hotspots.In this paper,polydimethylsiloxane(PDMS)was used for the membrane fabrication,PDMS-APTES and PDMS-BTPA composite mem-branes were prepared by the polymerization between PDMS and(3-aminopropyl)triethoxy silane(APTES)or bis(3-triethoxysilylpropyl)amine(BTPA).The effect of the coating times for separa-tion layer on the performance of PDMS-APTES composite membrane was investigated.The gas test results showed that CO2 permeance decreased while the CO2/N2 selectivity increased as the increased coating times.The optimum mass ratio of BTPA and PDMS in the casting solution of the separation layer was investigated,and the optimum performance of the composite membrane was determined when m(BTPA)∶m(PDMS)=2∶1.Finally,the effects of primary amine(APTES)and secondary amine(BTPA)on the performance of the composite membranes were discussed.Due to the differ-ences in the affinity of primary and secondary amine for CO2 and the interaction between molecular a-mines,the CO2 permeance and CO2/N2 selectivity of PDMS-BTPA membrane increased by 2.5 times in comparison with PDMS-APTES composite membrane.关键词
CO2分离/氨基/相互作用Key words
CO2 separation/amino group/interaction分类
化学化工引用本文复制引用
吴楠桦,张艳文,吴松,郭猛,马忠林,钟璟..氨基类型对PDMS复合膜CO2分离性能的影响[J].常州大学学报（自然科学版）,2026,38(4):10-21,12.基金项目
国家自然科学基金资助项目(22108015) （22108015）
常州市科技计划资助项目(CZ202200333) （CZ202200333）
中国石油化工股份有限公司科技部委托资助项目(223155). （223155）
