| 聚二甲基硅氧烷膜中乙醇-水的吸附和渗透蒸发行为 |
| |
| 引用本文： | 刘庆林,李磊,肖剑. 聚二甲基硅氧烷膜中乙醇-水的吸附和渗透蒸发行为[J]. 化学工程, 2006, 34(9): 32-34 |
| |
| 作者姓名： | 刘庆林 李磊 肖剑 |
| |
| 作者单位： | 厦门大学,化学化工学院,化学工程与生物工程系,福建,厦门,361005;南京大学,化学化工学院,应用化学系,江苏,南京,210093 |
| |
| 基金项目： | 国家自然科学基金资助项目(50243014,50573063) |
| |
| 摘 要： | 以乙醇/水体系为研究对象,结合F lory-Huggins理论,讨论溶胀过程的热力学行为,用以分析和考察聚二甲基硅氧烷(PDMS)膜在乙醇/水中的溶胀特性及组分间的耦合效应。结果表明,在乙醇质量分数20%—40%,膜的溶胀程度最大。渗透蒸发实验表明,水的渗透速率在乙醇质量分数不大于30%范围内变化很小,而乙醇的渗透速率基本随溶液中乙醇质量分数增加而增大。
|
| 关 键 词： | 乙醇/水 渗透蒸发 溶胀平衡 PDMS膜 |
| 文章编号： | 1005-9954（2006）09-0032-03 |
Sorption and permeation characteristics of ethanol/water mixture in PDMS membrane |
| |
| LIU Qing-lin,LI Lei,XIAO jian. Sorption and permeation characteristics of ethanol/water mixture in PDMS membrane[J]. Chemical Engineering, 2006, 34(9): 32-34 |
| |
| Authors: | LIU Qing-lin LI Lei XIAO jian |
| |
| Affiliation: | 1. Department of Chemical and Biochemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, China; 2. Department of Applied Chemistry, Nanjing University, Nanjing 210093, Jiangsu Province, China |
| |
| Abstract: | Ethanol/water mixture was dissolved in PDMS membrane prepared in laboratory in conjunction with(Flory-)Huggins theory to analyze the swelling(behavior) of the membrane.The result shows that the uptake of ethanol and water in the membrane has a maximum value,which is greater than the swelling of either pure component,in the ethanol mass fraction range of 20%-40%.The theoretic results show a roughly agreement with the swelling(behavior) of the PDMS membrane in ethanol/water mixture.The permeation experiment indicates that the(permeation) flux of ethanol increases with the increasing of ethanol mass fraction,and the permeation flux of water remains unchanged in the ethanol mass fraction range of less than 30%. |
| |
| Keywords: | ethanol/water pervaporation swelling equilibrium PDMS membrane |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
