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Preparation of waterborne polyurethane membranes based upon benzoic anhydride polyester polyol and pervaporation performances for benzene/cyclohexane separation
Authors: Chen Yazhong, Zhu Hao, Ye Hui, Yao Lulu, Cui Peng
Units: School of Chemistry and Chemical of Engineering, Hefei University of Technology, Anhui, Hefei, 230009
KeyWords: Anhydride polyester polyol; Waterborne polyurethane membrane; Pervaporation; Benzene/cyclohexane separation; Degree of swelling; Thermal stability
year,volume(issue):pagination: 2017,37(1):51-57

 A series of waterborne polyurethane membranes with different kinds of soft segments of different contents were successfully synthesized using polyphthalic acid-1, 6-glycol polyester diol (PH-56) or polyhexamethylene adipate glycol (PHA-2000) as soft segment, butanediol (BDO) and ethanediamine (EDA) as hard segment. The membranes were characterized using FT-IR, TGA, adsorption and pervaporation performance for benzene/cyclohexane (50/50 in wt. %) in order to probe the influence of content of benzene ring structure in soft segment. The results indicated that thermal stability and selectivity of PH-based membrane were better than PHA-based membrane. When the content of PH-56 increased from 55.0% to 73.6%,the degree of swelling increased gradually, the permeation flux rapidly increased from 6.91kg•μm/(m2•h) to 23.8 kg•μm/(m2•h), separation factor slowly decreased from 6.90 to 4.91 and almost no swelling in cyclohexane.


第一作者简介:陈亚中,男,(1977—),博士,副教授,主要从事膜分离技术和多相催化研究。 *通讯联系人:崔鹏,教授,主要从事膜分离过程与装备,脱硫脱硝研究,Email: cuipeng@hfut.edu.cn

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