中文摘要：

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40s时，所制备的膜对α-，β-紫罗兰酮有较明显的分离效果。

英文摘要：

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.