文献类型：期刊文献

英文题名：Wetting of polypropylene hollow fiber membrane contactors

作者：Lv, Yuexia[1,2];Yu, Xinhai[1];Tu, Shan-Tung[1];Yan, Jinyue[2,3];Dahlquist, Erik[2]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Minist Educ, Key Lab Pressurized Syst & Safety, Shanghai 200237, Peoples R China;[2]Malardalen Univ, Sch Sustainable Dev Soc & Technol, SE-72123 Vasteras, Sweden;[3]Royal Inst Technol, Sch Chem Sci & Engn, SE-10044 Stockholm, Sweden

年份：2010

卷号：362

期号：1-2

起止页码：444

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20103313165396);WOS:【SCI-EXPANDED(收录号:WOS:000281571100049)】；

基金：This research was carried out with the financial support of the Swedish Research Links Programme and the Chinese Natural Science Foundation (contract no. 20606011), to whom due acknowledgement is given. The authors are also thankful to the China Scholarship Council and Malardalen University for supporting the research in Sweden.

语种：英文

外文关键词：Wetting; Hollow fiber membrane contactors; Polypropylene; Surface morphologies; CO2 capture

摘要：Membrane wetting by absorbents leads to an Increase in mass transfer resistance and a deterioration in CO2 absorption performance during the membrane gas absorption process In order to better understand the wetting mechanism of membrane pores during their prolonged contact with adsorbents, polypropylene (PP) hollow fibers were Immersed in three different absorbents for up to 90 days Monoethanolamine, methyldiethanolamine, and deionized water were applied as absorbent solutions The characterization results of membrane samples confirm that the absorbent molecules diffuse into PP polymers during the exposure process, resulting in the swelling of the membranes The absorption-swelling wetting mechanism is proposed to explain observations made during the wetting process The strong reduction of contact angles indicates that the membrane surface hydrophobicity decreases remarkably during immersion due to membrane-absorbent interaction Membrane surface morphologies and surface roughness suffer from significant and complicated changes after immersing the membrane fibers in the absorbents. Immersion in an absorbent with a high surface tension results in small changes in membrane surface morphology. As indicated by the experimental results, improving membrane surface hydrophobicity may be an effective way of overcoming wetting problems (C) 2010 Elsevier B V All rights reserved