聚砜/改性碳纳米管复合膜的制备及亲水性能

doi:10.11949/j.issn.0438-1157.20151096

化工学报 ›› 2016, Vol. 67 ›› Issue (2): 654-660.DOI: 10.11949/j.issn.0438-1157.20151096

• 材料化学工程与纳米技术 • 上一篇下一篇

聚砜/改性碳纳米管复合膜的制备及亲水性能

史菁元, 王文一, 王金龙, 高宁宁, 李艳玲, 王恩霞, 霍腾波

天津工业大学省部共建分离膜与膜过程国家重点实验室, 材料科学与工程学院, 天津 300387

收稿日期:2015-07-08 修回日期:2015-09-02 出版日期:2016-02-05 发布日期:2016-02-05
通讯作者: 王文一
基金资助:
国家自然科学基金项目(21206120);化学工程联合国家重点实验室开放课题项目(SKL-ChE-14A0)。

Fabrication and hydrophilic properties of polysulfone/modified multiwalled carbon nanotube composite membranes

SHI Jingyuan, WANG Wenyi, WANG Jinlong, GAO Ningning, LI Yanling, WANG Enxia, HUO Tengbo

State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China

Received:2015-07-08 Revised:2015-09-02 Online:2016-02-05 Published:2016-02-05
Supported by:
supported by the National Natural Science Foundation of China (21206120) and the State Key Laboratory of Chemical Engineering (SKL-ChE-14A0).

摘要/Abstract

摘要：

利用浸没沉淀相转化法,以聚砜(PSF)为膜材料,羧基化碳纳米管(MWCNTs-COOH)为添加剂,聚乙烯吡咯烷酮(PVP)为致孔剂,N,N-二甲基乙酰胺(DMAc)为溶剂,制备了聚砜/多壁碳纳米管复合膜,系统研究了制备复合膜时碳纳米管的添加量、预挥发时间以及凝固浴组成对其结构和性能的影响。实验结果表明,添加MWCNTs-COOH后,复合膜的亲水性能和抗污性能显著提高,同时复合膜的力学性能也明显增强。复合膜的 SEM 照片显示,随预挥发时间的延长和凝固浴中DMAc 质量分数的增加,复合膜断面由指状孔结构向海绵状孔结构过渡;复合膜的水通量下降,截留率上升。

关键词: 膜, 分离, 聚砜, 碳纳米管, 亲水性, 渗透

Abstract:

The polysulfone(PSF)/modified multiwalled carbon nanotube(MWCNTs-COOH) composite membranes were formed via phase inversion process. The membranes used PSF as film-forming materials, MWCNTs-COOH as additives, polyvinyl pyrrolidone(PVP) as pore-foaming agent and N,N-dimethylacetamide as solvent. The effects of MWCNTs-COOH constitution, solvent evaporation time and coagulation bath composition on the composite membranes were studied systematically. Experiment results showed that the hydrophilic property and anti-pollution ability of composite membranes were improved remarkably. In addition, the mechanical property was also improved significantly. SEM images showed that the porous structure of cross-section changed from finger type to sponge type when the solvent evaporation time increased or the DMAc mass fraction increased of the coagulation bath, the pure water flux was declined and the BSA rejection was increased observably.

Key words: membrane, separation, polysulfone, carbon nanotube, hydrophilicity, permeation

中图分类号:

TQ028.8

史菁元, 王文一, 王金龙, 高宁宁, 李艳玲, 王恩霞, 霍腾波. 聚砜/改性碳纳米管复合膜的制备及亲水性能[J]. 化工学报, 2016, 67(2): 654-660.

SHI Jingyuan, WANG Wenyi, WANG Jinlong, GAO Ningning, LI Yanling, WANG Enxia, HUO Tengbo. Fabrication and hydrophilic properties of polysulfone/modified multiwalled carbon nanotube composite membranes[J]. CIESC Journal, 2016, 67(2): 654-660.

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聚砜/改性碳纳米管复合膜的制备及亲水性能

Fabrication and hydrophilic properties of polysulfone/modified multiwalled carbon nanotube composite membranes

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