摘要
合成了三种新型聚酰亚胺,并制成渗透汽化膜用以分离乙醇-水、异丙醇-水混合物。结果表明,三种聚酰亚胺均具有较高的分离系数,在分子主链中含有—Si—(CH_3)_2—链节的聚酰亚胺膜,其透过速率高于、分离系数低于其它两种聚酰亚胺,并从聚合物分子结构的观点讨论了其原因。
Three novel polyimides were syntluzied and used as pervaporation membranes to separation water ethanol and water isopropanol mixture. The result showed the three polvimidc membranes had rather high separation factor. The polyimide containning -Si(CH3)2- radical in the main-chain of the polymer had higher permeation rate and lower separation factor than that of other two. The phenomenon was explained in view of structure of the polyimides.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1993年第1期19-22,共4页
Polymer Materials Science & Engineering
关键词
膜
聚酰亚胺
膜分离
pervaporation,rnembrane,polyimide.
