膜科学与技术

Pebax/TPP共混膜的制备及CO2分离性能研究

作者：伍勇东，赵丹，任吉中，李晖，姜冬，季洁梅，邓麦村

单位： 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

关键词： Pebax; 三丙酸甘油酯；共混膜；CO2分离

出版年,卷(期):页码： 2020,40(1):37-44

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.

第一作者简介：伍勇东（1990-），女，湖南益阳，博士生，从事气体分离方面研究，E-mail:wuyongdong@dicp.ac.cn 通讯作者，E-mail：renjizhong@dicp.ac.cn; zhaodan210@dicp.ac.cn

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