醋酸纤维素非对称膜的制备及对α-,β-紫罗兰酮的分离研究  

Study on preparation of cellulose acetate asymmetrical membranes and application to separate α-or β-ionone

作　　者：李国祥[1] 孟霞[2] 艾萍[3] 袁黎明[3] 

机构地区：[1]湖北民族学院化学与环境工程学院,湖北恩施445000 [2]中国科学院西双版纳热带植物园,云南昆明650223 [3]云南师范大学化学化工学院,云南昆明650092

出　　处：《化工科技》2008年第1期5-7,共3页Science & Technology in Chemical Industry

基　　金：国家自然科学基金资助项目(20775066);云南省自然科学基金资助项目(2005E0006Z)

摘　　要：以醋酸纤维素(CA)为材料制备了非对称膜,将所制备的膜应用于位置异构体α-,β-紫罗兰酮的分离,探讨了铸膜液中CA质量分数、膜厚、溶剂挥发时间对膜分离性能的影响。结果表明:当CA质量分数为20%、膜厚为500μm、溶剂挥发时间40 s时,所制备的膜对α-,β-紫罗兰酮有较明显的分离效果。Asymmetrical membranes of cellulose acetate were prepared. Effects of different factors including concentration, thickness and volatilization time of solvent were investigated on membrane performance, α-or β-Ionone, the isomer was separated through composite rnembranes. The results showed that asymmetrical membranes have obvious separation effects when concentration is 20%, thickness is 500 μm and volatilization time of solvent is 40 s.

关 键 词：醋酸纤维素 α β-紫罗兰酮 非对称膜 异构体分离 

分 类 号：O657.7[理学—分析化学]