Effect of molecular structure on the gas permeability of cellulose aliphatate esters
作者: Jing ChenJin-ming ZhangYe FengJia-song HeJun Zhang
作者单位: 1Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences
刊名: Chinese Journal of Polymer Science, 2014, Vol.32 (1), pp.1-8
来源数据库: Springer Journal
DOI: 10.1007/s10118-014-1384-2
关键词: Cellulose aliphatate esterStructureGas permeability
英文摘要: Abstract(#br)In this work, four kinds of cellulose aliphatate esters, cellulose acetate (CA), cellulose propionate (CP), cellulose butyrate (CB) and cellulose acetate butyrate (CAB) are synthesized by the homogeneous acylation reactions in cellulose/AmimCl solutions. These cellulose aliphatate esters are used to prepare gas separation membranes and the effects of molecular structure, such as substituent type, degree of substitution (DS) and distribution of substituents, on the gas permeability are studied. For CAs, as the DS increases, their gas permeabilities for all five gases (O 2 , N 2 , CH 4 , CO and CO 2 ) increase, and the ideal permselectivity significantly increases first and then slightly decreases. At similar DS value, the homogenously synthesized CA (distribution order of...
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影响因子:1.27 (2012)

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关键词翻译
关键词翻译
  • cellulose 纤维素
  • permeability 磁导率
  • esters 酯类
  • molecular 分子的
  • structure 构造