浓乳液优先脱醇渗透分离膜形态研究  

Study on morphology of concentrated emulsion ethanol permselective separation membrane

作　　者：赵素芬[1] 刘晓艳[1] 张莉琼[1] 涂志刚[1,2] 石胜鹏[2] 张晨[2] 

机构地区：[1]中山火炬职业技术学院包装印刷系,中山528436 [2]北京化工大学材料科学与工程学院,北京100029

出　　处：《化工新型材料》2015年第6期149-151,共3页New Chemical Materials

基　　金：2013年度国家国际科技合作专项项目(2013DFG92600)

摘　　要：将醇/水分离通道适当地放大,在匀质膜材料中单一纳孔的基础上,引入介于纳孔与微孔之间的通道亚微孔,只依靠极性效应对水和乙醇进行选择分离。通过设计得到合适尺寸的分离通道,从而可以依靠极性选择作用来达到从水中优先脱醇并提高分离性能的目的。通过对改性有机硅浓乳液以及由其直接制备得到的分离膜的形态进行电子显微镜观测,发现在分离膜中存在浓乳液乳胶粒子相互挤压、密集堆砌而且随着苯乙烯类单体含量的增加,乳胶粒子形态结构的边缘逐渐清晰,并能够保持浓乳液中乳胶粒子密集堆砌形成的多面体结构,通过红外及DSC谱图的变化分析,发现苯乙烯存在交联互穿增强效果。Suitably enlarging the separation channel between alcohol and water,based on single nanohole in the homogenous membrane material,the sub-micropores between nanohole and micropore channel was introduced,ethanol in water was selectively separated through polarity effect,which isolated the ethanol from the water and improved the separation performance.Observing the modified silicone and separation membrane that produced directly with electron microscope,latex particles of silicone concentrated emulsion were found in the separation membrane extracted mutually and packed densely.Meanwhile with increasing the content of styrene monomer,the edge of the structure form of latex particles gradually clear,and can kep the polyhedron structure of the latex particles in concentrated emulsion that packed densely and formed.By the analysis of FTIR and DSC spectra,the styrene could enhance the film through crosslinking interpenetrating.

关 键 词：优先脱醇 渗透分离膜 有机硅浓乳液 形态 

分 类 号：TQ223.1[化学工程—有机化工] TQ051.893