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.
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)
出处
《膜科学与技术》
CAS
CSCD
北大核心
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)。
