Issue 22, 2016
From the journal:

RSC Advances

Preparation of jujube-cake structure membranes through in situ polymerization of hyperbranched polysiloxane in ethylene-vinyl acetate matrix for separation of ethyl acetate from water

Chun-fang Zhang,a   Guo-liang Wu,a   Liang-liang Dong,a   Jun Tang,a   Yun-xiang Bai,*a   Yuan-hua Zhu,a   Qing-sheng Liu,a   Yu-ping Suna  and  Jin Gua  

* Corresponding authors

a The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China
E-mail: baisir223@163.com
Fax: +86 51085107763
Tel: +86 51085107763

Abstract

Ethylene-vinyl acetate (EVA)/hyperbranched polysiloxane (HPSiO) hybrid pervaporative membranes for separation of ethyl acetate (EA) from water with a “jujube-cake” structure were prepared by in situ polymerization. The morphology of the EVA/HPSiO membranes was characterized by using a scanning electron microscope (SEM) and transmission electron micrographs (TEM). The mechanical properties, contact angle, density, void volume and swelling behavior of the membranes were investigated. We also studied the effect of HPSiO content, operating temperature and feed concentration on the separation properties of EA/water mixtures. The results show that the addition of appropriate HPSiO could improve the hydrophobicity of the membranes, which is helpful to recover EA from water. The membrane, loading 20 wt% HPSiO, exhibited the highest separation factor and permeability for a feed concentration of 1 wt% at 30 °C.

Graphical abstract: Preparation of jujube-cake structure membranes through in situ polymerization of hyperbranched polysiloxane in ethylene-vinyl acetate matrix for separation of ethyl acetate from water

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Article information

DOI
https://doi.org/10.1039/C5RA23790D
Article type
Paper
Submitted
11 Nov 2015
Accepted
16 Jan 2016
First published
02 Feb 2016

RSC Adv., 2016,6, 18308-18318

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Preparation of jujube-cake structure membranes through in situ polymerization of hyperbranched polysiloxane in ethylene-vinyl acetate matrix for separation of ethyl acetate from water

C. Zhang, G. Wu, L. Dong, J. Tang, Y. Bai, Y. Zhu, Q. Liu, Y. Sun and J. Gu, RSC Adv., 2016, 6, 18308 DOI: 10.1039/C5RA23790D

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