Chem. J. Chinese Universities ›› 2013, Vol. 34 ›› Issue (9): 2037.doi: 10.7503/cjcu20130480

• Letter • Previous Articles     Next Articles

Cellulose Ester/Ionic Liquids Composite Membranes for CO2-Favored Permeation

CHEN Jing, ZHANG Jin-Ming, ZHANG Jun   

  1. Beijing National Laboratory for Molecular Sciences(BNLMS), Key Laboratory of Engineering Plastics(KLEP), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2013-05-23 Online:2013-09-10 Published:2013-08-30

Abstract:

A novel cellulose ester grafted ionic liquid(IL) copolymer, 1-vinyl-3-butylimidazolium tetra-fluoroborate(VbimBF4) grafted cellulose butyrate acrylate(CBA)(CBA-g-VbimBF4) was synthesized by free radical graft copolymerization. The CBA-g-VbimBF4 membranes exhibited improved CO2 permeability over the conventional cellulose acetates. Furthermore, four kinds of ILs, EmimBF4, BmimTf2N, BmimAc and EmimAc were incorporated into CBA-g-VbimBF4 copolymer, and obtained CBA-g-VbimBF4/ILs composite membranes exhibited both high permeability and permselectivity for CO2.

Key words: Cellulose, Ionic liquid, Composite membrane, CO2-favored permeation

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