| 碳纳米管填充PDMS膜的渗透汽化性能 |
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| 引用本文： | 韩小龙,张杏梅,马晓迅,李继定.碳纳米管填充PDMS膜的渗透汽化性能[J].化工学报,2014,65(1):271-278. |
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| 作者姓名： | 韩小龙 张杏梅 马晓迅 李继定 |
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| 作者单位： | 1.西北大学化工学院, 陕西 西安 710069;2.清华大学化学工程系, 化学工程联合国家重点实验室, 北京 100084;3.宝鸡文理学院化学化工学院, 陕西 宝鸡 721013 |
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| 基金项目： | 化学工程联合国家重点实验室开放课题项目（SKL-ChE-12A01）；国家高技术研究发展计划项目（2012AA03A607）；陕西省教育厅项目（2010JK408）；西北大学科研启动基金项目（PR13022）。 |
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| 摘 要： | 将碳纳米管（CNTs）填充到PDMS中制备出CNTs/PDMS杂化膜，并将其用于乙醇/水体系的分离，发现由多壁碳纳米管制备的膜分离性能优于单壁碳纳米管填充膜，在40℃下，进料乙醇浓度为5%（质量分数）时，膜的分离因子可由8.3提高到10.0，渗透通量为206.2 g·（m2·h）-1；采用十二烷基三氯硅烷对多壁碳纳米管进行修饰，并对修饰前后碳纳米管的性能进行表征，研究表明修饰后碳纳米管表面形成疏水层，碳纳米管的疏水性增强；将修饰后的碳纳米管填充到PDMS中，可进一步提高杂化膜对乙醇的选择性，膜的分离因子可提高到11.3，渗透通量为130.9 g·（m2·h）-1。
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| 关 键 词： | 膜 分离 渗透蒸发 碳纳米管 聚二甲基硅氧烷 |
| 收稿时间： | 2013-07-01 |
| 修稿时间： | 2013-11-25 |
Pervaporation performance of carbon nanotube filled PDMS membranes |
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| HAN Xiaolong,ZHANG Xingmei,MA Xiaoxun,LI Jiding.Pervaporation performance of carbon nanotube filled PDMS membranes[J].Journal of Chemical Industry and Engineering(China),2014,65(1):271-278. |
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| Authors: | HAN Xiaolong ZHANG Xingmei MA Xiaoxun LI Jiding |
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| Affiliation: | 1.School of Chemical Engineering, Northwest University, Xi'an 710069, Shaanxi, China;2.State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;3.Department of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, China |
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| Abstract: | Single wall carbon nanotubes (SWNT), multiwall carbon nanotubes (MWNT) and dodecyltrichlorosilane modified MWNT were incorporated into polydimethylsiloxane (PDMS) for separation of ethanol/water mixture via pervaporation. The pervaporation results showed that separation performance of MWNT/PDMS hybrid membrane was better than that of SWNT/PDMS hybrid membrane. When MWNT/PDMS hybrid membranes were used to separate 5%(mass) ethanol aqueous solution at 40℃, a separation factor of 10.0 and total flux of 206.2 g·(m2·h)-1 were observed. The pervaporation selectivity of MWNT/PDMS membrane could be effectively improved by dodecyltrichlorosilane modification, and the modified MWNT/PDMS hybrid membrane showed a separation factor of 11.3 and total flux of 130.9 g·(m2·h)-1 for 5%(mass) ethanol feed concentration at 40℃. |
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| Keywords: | membranes separation pervaporation carbon nanotubes PDMS |
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