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[1]王伟平,郑 植,李 磊*. 聚环氧离子液体型聚氨酯膜渗透汽化分离丁醇水溶液的研究[J].南京大学学报(自然科学),2018,54(1):205.[doi:10.13232/j.cnki.jnju.2018.01.022]
 Wang Weiping,Zheng Zhi,Li Lei*. Selective recovery of n-butanol from aqueous solutions with functionalized poly(epoxide ionic liquid)-based polyurethane membranes by pervaporation[J].Journal of Nanjing University(Natural Sciences),2018,54(1):205.[doi:10.13232/j.cnki.jnju.2018.01.022]
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 聚环氧离子液体型聚氨酯膜渗透汽化分离丁醇水溶液的研究()
     

《南京大学学报(自然科学)》[ISSN:0469-5097/CN:32-1169/N]

卷:
54
期数:
2018年第1期
页码:
205
栏目:
出版日期:
2018-02-01

文章信息/Info

Title:
 Selective recovery of n-butanol from aqueous solutions with functionalized poly(epoxide ionic liquid)-based polyurethane membranes by pervaporation
作者:
 王伟平郑 植李 磊*
 南京大学化学化工学院,南京,210023
Author(s):
 Wang WeipingZheng ZhiLi Lei*
 School of Chemistry and Chemical Engineering,Nanjing University,Nanjing,2100023,China
关键词:
 渗透汽化聚环氧离子液体复合膜聚氨酯丁醇水溶液
Keywords:
 pervaporationpoly(epoxide ionic liquid)membranepolyurethanen-butanol aqueous solution
分类号:
TP181
DOI:
10.13232/j.cnki.jnju.2018.01.022
文献标志码:
A
摘要:
 将离子液体聚合物复合膜用于渗透汽化分离,在提高基膜的分离选择性的同时,解决支撑液膜中离子液体存在易流失的问题.首先通过聚环氧氯丙烷(PECH)与甲基咪唑的季铵化反应,合成端羟基聚(1-甲基咪唑-3)甲基乙氧基氟磷酸盐(PEIL1)与端羟基聚(1-甲基咪唑-3)甲基乙氧基(三氟甲基磺酰胺)盐(PEIL2)两种离子液体,接着用端羟基聚丁二烯(HTPB)与合成的离子液体预聚体反应,4,4′-二苯基甲烷二异氰酸酯(MDI)扩链剂扩链,制备聚环氧离子液体型聚氨酯复合膜PEIL1-PU与PEIL2-PU.此外,系统研究了复合膜对丁醇水溶液的分离性能以及长时间分离的稳定性.实验表明,两种复合膜的渗透通量较普通聚氨酯膜略有下降,但分离因子升高,并且在长时间的分离实验中保持良好的稳定性.
Abstract:
 In this study,ionic liquid was fixed in polyurethane(PU)membranes by chemical reaction which were used in pervaporation to solve problems of low stability and easy-to-lost of supported ionic liquid membranes(SILMs).Poly(1-methylimidazole-3-methyl-ethyloxy)hexafluorophosphate ionic liquid(PEIL1)and poly(1-methylimidazole-3-methyl-ethyloxy)bistrifluoromethanesulfonimidate ionic liquid(PEIL2)were synthesized by quaternization reaction of polyepichlorohydrin(PECH)and methylimidazole.The novel modified membranes were prepared by the reaction of functionalized poly(epoxide ionic liquid)above with hydroxyl terminated polybutadiene(HTPB)using 4,4′-diphenylmethane diisocyanate(MDI)as chain extenders.The selective recovery of n-butanol from aqueous solutions by pervaporation through poly(1-methylimidazole-3-methyl-ethyloxy)hexafluorophosphate grafted polyurethane(PEIL1-PU),poly(1-methylimidazole-3-methyl-ethyloxy)bistrifluoromethanesulfonimidate grafted polyurethane(PEIL2-PU)and hydroxyl-terminated polybutadiene-polyurethane(HTPB-PU)membranes were investigated and compared.Pervaporation results indicated that the permeation flux through PEIL-PU membranes decreased compared with initial HTPB-PU membrane,while the separation factor of PEIL-PU membranes increased indeed.Besides,it was found that the PEIL-PU membranes showed long-term stability than supported ionic liquid membranes.

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备注/Memo

备注/Memo:
 基金项目:江苏省自然科学基金(BK20161403),国家自然科学基金(81274095,21576129)
收稿日期:2017-05-17
*通讯联系人,E-mail:lilei@nju.edu.cn
更新日期/Last Update: 2018-01-31