含氟聚酰亚胺薄膜对高效、低能耗捕集二氧化碳有重大意义。采用“实验＋模拟”方法，探究六氟二酐(6FDA)、六氟二胺(HFBAPP)共聚比例对含氟聚酰亚胺膜材料性能的影响，使用FTIR、XRD手段探究该含氟聚酰亚胺(FPI)的化学结构，通过TGA、DSC与拉力-应力测试探究FPI的热力学性能，并在23 ℃条件下进行CO2、N2渗透性能测试。结果表明，6FDA过量的FPI-3膜具有更好的热稳定性(其玻璃化转变温度达262 ℃)、拉伸性能与气体渗透性，对于CO2渗透率为2.963 0 Barrer，但对CO2/N2体系分离性能较差；理想比例的FPI-1膜的气体渗透性能低于FPI-3膜，但对CO2/N2体系分离性能较好，选择性达16.54；HFBAPP过量的FPI-2膜的气体渗透性能与选择性均低于FPI-1膜。通过MATLAB代码模拟气体在膜中的渗透过程，进一步验证了FPI-3膜良好的气体渗透性能。

辽宁省教育厅基础科研项目(LJ212410148038)； 辽宁省科技厅博士启动项目(2025-BS-0419)

［1］ D’Alessandro D M, Smit B, Long J R. Carbon dioxide capture: prospects for new materials［J］. Angew Chem Int Ed, 2010, 49(35): 6058-6082.
［2］Leung D Y C, Caramanna G, Maroto-Valer M M. An overview of current status of carbon dioxide capture and storage technologies［J］. Renew Sust Energ Rev, 2014, 39: 426-443.
［3］Dalane K, Dai Z, Mogseth G, et al. Potential applications of membrane separation for subsea natural gas processing: A review［J］. J Nat Gas Sci Eng, 2017, 39: 101-117.
［4］Alentiev A Y, Ryzhikh V E, Syrtsova D A, et al. Polymer materials for solving actual problems of membrane gas separation［J］. Usp Khim, 2023, 92(6): 5083. 
［5］马臣俣,唐微,董杰,等.含三甲基苯结构聚酰亚胺气体分离膜的设计合成及其气体分离特性［J］.膜科学与技术,2025,45(4):86-94.
［6］ Liaw D J, Wang K L, Huang Y C, et al. Advanced polyimide materials: Syntheses, physical properties and applications［J］. Prog Polym Sci, 2012, 37(7): 907-974. 
［7］Rufford T E, Smart S, Watson G C Y, et al. The removal of CO2 and N2 from natural gas: A review of conventional and emerging process technologies［J］. J Petrol Sci Eng, 2012, 94: 123-154.
［8］宋映晓,唐傲,张家霖,等.含Trger’s base结构聚(苯并噁唑-酰亚胺)热重排分离膜的制备与其气体分离特性研究［J］.高分子学报,2025,56(8):1358-1368.
［9］Belov N, Chatterjee R, Nikiforov R, et al. New poly(ether imide)s with pendant di-tert-butyl groups: Synthesis, characterization and gas transport properties［J］. Sep Purif Technol, 2019, 217: 183-194.
［10］刘懿韬, 蔡治礼, 单玲珑,等. 蝶烯基微孔聚合物气体分离膜的研究进展［J］. 膜科学与技术, 2022, 42(1)： 145-154.
［11］Guiver M D, Lee Y M. Polymer rigidity improves microporous membranes［J］. Science, 2013, 339(6117): 284-285.
［12］Tong H, Hu C, Yang S, et al. Preparation of fluorinated polyimides with bulky structure and their gas separation performance correlated with microstructure［J］. Polymer, 2015, 69: 138-147.
［13］Song B Q, Gao M Y, van Wyk L M, et al. A new type of C2H2 binding site in a cis-bridging hexafluorosilicate ultramicroporous material that offers trace C2H2 capture［J］. Chem Sci, 2025, 16(20): 9010-9019.
［14］Darmawan N, Apriliyanto Y B, Jati A A C, et al. Fluorine substitution in diamine covalent organic frameworks: Computational analysis of CO2/N2 adsorption and permeability［J］. Sci Technol Indones, 2025, 10(1): 18-26.
［15］Bhatt P M, Belmabkhout Y, Cadiau A, et al. A fine-tuned fluorinated MOF addresses the needs for trace CO2 removal and air capture using physisorption［J］. J Am Chem Soc, 2016, 138(29): 9301-9307.
［16］Yang Z, Wang S, Zhang Z, et al. Influence of fluorination on CO2 adsorption in materials derived from fluorinated covalent triazine framework precursors［J］. J  Mater Chem， 2019, 7(29): 17277-17282.
［17］Rosenauer P. Modelling of polyimides for innovative process & product integration in the semiconductor industry［D］. Graz: TU Graz, 2025.
［18］李品儒,肖国勇,陈元林,等.含四芳基咪唑结构的热重排气体分离膜的制备与性能研究［J］.高分子学报,2024,55(2):212-221.
［19］Li Q, Chen B, Yao S,et al.The thermal behavior and pyrolysis mechanism of a polyimide gas separation membrane［J］.RSC Sustain,2024,2(12):3916-3928.
［20］Serbezeanu D, Butnaru I, Varganici C D, et al. Phosphorus-containing polyimide fibers and their thermal properties［J］. RSC Adv, 2016, 6(44): 38371-38379.
［21］Faghihi K, Shabanian M. Synthesis and characterization of new optically active poly (amide-imide)s based on N-trimellitimido-L-amino acid and trimethylene units［J］. B Chem Soc Ethiopia, 2011,25(1):97-102.
［22］杨成强,李光照,张帅,等.新型含氟聚酰胺酰亚胺的合成与性能［J］.工程塑料应用,2024,52(10):34-39.
［23］Kwac L K, Kim B J, Chang J H. Comparison of the properties of polyimides derived from various dianhydride and diamine monomers［J］. RSC Adv, 2025, 15(35): 29013-29022.
［24］Sava I, Lisa G. Thermal and optical behaviour of some aliphaticaromatic polyimide films［J］. J Optoelectron Adv M, 2018, 20: 425-430.
［25］Kai H, Izumi A, Hayakawa S, et al. Interchain ordering structure and main chain conformation analysis of thermal stability in vinyl-addition polynorbornene［J］. Polymer, 2022, 257: 125260.
［26］徐浩,刘凌宇,刘清潭,等.高通量自聚微孔聚酰亚胺富氧膜的制备［J］.膜科学与技术,2024,44(3):21-29.
［27］Xu W, He X, Zhou Y, et al. Effect of diamine monomers with varied backbone structures on dielectric and other comprehensive properties of fluorinated polyimide films［J］. Polymers, 2025, 17(11): 1505.
［28］Green D W, Perry R H. Perry’s chemical engineers’ handbook［M］.New York: McGraw-Hill Education, 2007:12.
［29］Sang Y, Cao Y, Wang L, et al. N-rich porous organic polymers based on Schiff base reaction for CO2 capture and mercury (Ⅱ) adsorption［J］. J Colloid  Interface Sci, 2021, 587: 121-130.