Pebax/TPP共混膜的制备及CO2分离性能研究  

CO2 separation property of Pebax/TPP blend membranes

作　　者：伍勇东 赵丹 任吉中 李晖 姜冬 季洁梅 邓麦村 WU Yongdong;ZHAO Dan;REN Jizhong;LI Hui;JIANG Dong;JI Jiemei;DENG Maicun(National Laboratoty for Clean Energy,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]洁净能源国家重点实验室,大连化学物理研究所,大连116023 [2]中国科学院大学,北京100049

出　　处：《膜科学与技术》2020年第1期37-44,共8页Membrane Science and Technology

基　　金：国家自然科学基金(21908215);大连化物所科研创新基金项目(Grant:DICP ZZBS201713)。

摘　　要：为了获得具有高CO2分离性能的膜材料,采用三丙酸甘油酯(TPP)为添加剂制备Pebax1657/TPP混合膜,并考察了TPP含量对Pebax/TPP共混膜的结构及气体分离性能的影响.SEM、XRD、ATR-FTIR和TGA分析表明,Pebax与TPP具有良好的相容性及热稳定性;TPP的加入同时提高了共混膜对CO2和N2的溶解系数和扩散系数.Pebax/TPP共混膜中CO2和N2的气体渗透性能随着TPP含量的增加而增加,而CO2/N2的选择性则随着TPP含量的增加而下降.To improve CO2 separation performance of Pebax matrix membrane,TPP was used as the additive to blend with Pebax1657 matirx.The effect of TPP on the morphology,structure and gas permeation performance of Pebax/TPP blend was investigated.Pebax and TPP had a good compartibility which was characterized with SEM,XRD,ATR-FTIR and TGA analysis.With the incorporation of TPP,the solubility and diffusion coefficients of the blend membranes both increased.Thus,the CO2 and N2 permeability of Pebax/TPP membranes increased with the increase of TPP content,while the CO2/N2 selectivity reduced at the same time.

关 键 词：Pebax 三丙酸甘油酯 共混膜 CO2分离 

分 类 号：TQ028.8[化学工程]