期刊
CELLULOSE
卷 21, 期 3, 页码 1987-1995出版社
SPRINGER
DOI: 10.1007/s10570-014-0252-0
关键词
Enantioselective membrane; Chiral separation; Cellulose acetate propionate membrane
资金
- Direccion General de Educacion Superior Tecnologica (DGEST) [4374.11-P]
This paper reports the characterization of new synthesized chiral polymeric membranes, based on a cellulose acetate propionate polymer. The flux and permselective properties of the membrane were studied using 50 % ethanol solution of (R,S)-trans-stilbene oxide as feed solution. Scanning electron microscopy revealed the asymmetric structure of these membranes. The roughness of the surface was measured by atomic force microscopy. The resolution of over 97 % enantiomeric excess was achieved when the enantioselective membrane was prepared with 18 wt% cellulose acetate and 8 wt% cellulose acetate propionate in the casting solution of dimethyl formamide/N-methyl-2-pyrrolidone/acetone, at 20 A degrees C and 55 % humidity, and a water bath at 10 A degrees C for the gelation of the membrane. The operating pressure and the feed concentration of the trans-stilbene oxide were 275.57, 345.19, and 413.84 kPa and 2.6 mM, respectively.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据