Single-side hydrolysis of hollow fiber polyacrylonitrile membrane by an interfacial hydrolysis of a solvent-impregnated membrane
Single-side hydrolysis of hollow fiber polyacrylonitrile membrane by an interfacial hydrolysis of a solvent-impregnated membrane
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通过溶剂浸渍膜的界面水解实现中空纤维聚丙烯腈膜的单侧水解
DOI：
10.1016/j.memsci.2009.12.030
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发表时间：
2010-03
影响因子：
9.5
通讯作者：
Li, Jie
中科院分区：
文献类型：
--
作者：
Zhang, Guojun;Song, Xue;Ji, Shulan;Liu, Zhongzhou;Li, Jie
本文提出了一种通过聚丙烯腈中空纤维膜的单面水解来提高膜机械强度和膜通量的新方法。采用分步溶剂置换法，将非水溶性溶剂环己烷引入膜孔中，制备了环己烷浸渍聚丙烯腈中空纤维膜。然后将碱性水溶液通入管腔侧，利用环己烷/水相界面在中空纤维的内表面上引入界面水解反应。反应结束后，水置换加入的环己烷，保留孔道。ATR-FTIR和EDX分析证实，在膜孔中没有发生碱水解。还进行了SEM和AFM以进一步了解膜表面的微观形貌变化。在PAN基复合渗透汽化膜的组装过程中，采用PAN基膜的单面水解，在保持较高选择性的同时，通量和机械强度都得到了较大的提高。
In this paper, a new method was proposed to improve the mechanical strength and flux of polyacrylonitrile (PAN)-based membrane by a single-side hydrolysis of hollow fiber PAN substrate membrane. A non-water miscible solvent of cyclohexane was firstly incorporated into membrane pores to form cyclohexane-impregnated hollow fiber PAN membrane by stepwise solvent replacement method. Alkaline aqueous solution was then fed into lumen side to introduce interfacial hydrolysis reaction on the inner surface of hollow fiber by using the cyclohexane/water phase interface. After the reaction, the cyclohexane incorporated was displaced by water to remain the pore pathway. The ATR-FTIR and EDX analyses confirmed that the alkaline hydrolysis did not occur in the membrane pores. SEM and AFM were also conducted to further understand the microtopographical changes on membrane surfaces. During the assembly of PAN-based polyelectrolyte pervaporation composite membranes, both flux and mechanical strength was highly improved by using single-side hydrolysis of PAN substrate membrane while the selectivity was still kept at a relatively high level.
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影响因子：
9.5
作者：
Zhen‐Gang Wang;L. Wan;Zhi‐Kang Xu
通讯作者：
Zhen‐Gang Wang;L. Wan;Zhi‐Kang Xu
DOI：
10.1016/s0928-4931(02)00189-3
发表时间：
2002-12
期刊：
Materials Science and Engineering: C
影响因子：
--
作者：
A. Toutianoush;B. Tieke
通讯作者：
A. Toutianoush;B. Tieke
影响因子：
5.4
作者：
Jian Chen;Ji-ding Li;Zhiping Zhao;Dingcong Wang;Cuixian Chen
通讯作者：
Jian Chen;Ji-ding Li;Zhiping Zhao;Dingcong Wang;Cuixian Chen
影响因子：
9.5
作者：
Lohokare, H. R.;Muthu, M. R.;Kharul, U. K.
通讯作者：
Kharul, U. K.
影响因子：
8.6
作者：
Xiangli Qiao;Zhen-Jia Zhang;Z. Ping
通讯作者：
Xiangli Qiao;Zhen-Jia Zhang;Z. Ping