SYNTHESIS OF PSF-g-PAA AND PSF-g-PNIPAAm AND THE ENVIRONMENTALLY RESPONSIVE PROPERTIES OF THEIR BLEND MEMBRANES

WANG Jianyu; XU Youyi; YI Zhuan; ZHU Liping; ZHU Baoku

doi:10.3724/SP.J.1105.2009.01138

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SYNTHESIS OF PSF-g-PAA AND PSF-g-PNIPAAm AND THE ENVIRONMENTALLY RESPONSIVE PROPERTIES OF THEIR BLEND MEMBRANES

Research Article | 更新时间：2021-03-19

- SYNTHESIS OF PSF-g-PAA AND PSF-g-PNIPAAm AND THE ENVIRONMENTALLY RESPONSIVE PROPERTIES OF THEIR BLEND MEMBRANES
- Acta Polymerica Sinica Issue 11, Pages: 1138-1145(2009)
- 作者机构：
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- DOI：10.3724/SP.J.1105.2009.01138
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- Published：20 November 2009，
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WANG Jianyu, XU Youyi, YI Zhuan, ZHU Liping, ZHU Baoku. SYNTHESIS OF PSF-g-PAA AND PSF-g-PNIPAAm AND THE ENVIRONMENTALLY RESPONSIVE PROPERTIES OF THEIR BLEND MEMBRANES. [J]. Acta Polymerica Sinica (11):1138-1145(2009)
DOI：

WANG Jianyu, XU Youyi, YI Zhuan, ZHU Liping, ZHU Baoku. SYNTHESIS OF PSF-g-PAA AND PSF-g-PNIPAAm AND THE ENVIRONMENTALLY RESPONSIVE PROPERTIES OF THEIR BLEND MEMBRANES. [J]. Acta Polymerica Sinica (11):1138-1145(2009) DOI： 10.3724/SP.J.1105.2009.01138.

摘要

以氯甲基化双酚A型聚砜（PSF-CH2Cl）为大分子引发剂，通过原子转移自由基聚合法（ATRP）合成了以聚砜（PSF）为疏水主链、分别以聚丙烯酸（PAA）和聚(N-异丙基丙烯酰胺)（PNIPAAm）为亲水侧链的两种梳状两亲性共聚物PSF-g-PAA和PSF-g-PNIPAAm.利用1H-NMR和GPC对合成产物进行表征.然后，分别将PSF-g-PAA和PSF-g-PNIPAAm与PSF进行共混，通过浸没沉淀相转化法制备了共混膜.研究发现，引入20 wt%的两亲性共聚物后，PSF-g-PAA/PSF共混膜的水通量在pH=2～6区间发生明显的变化，即膜的水通量显示出典型的pH响应性；而PSF-g-PNIPAAm/PSF共混膜的纯水通量在20～60℃温度区间显示出典型的温度响应性.

Abstract

To prepare environmentally resporsive(ER) copolymers which are suitable for fabr ication of ER polysulfone (PSF) membranes

we designed and synthesized the PSF copolymers with poly(acrylic acid)(PAA) and poly(N-isopropylacrylamide (PNIPAAm) side chains

i.e.PSF-g-PAA and PSF-g-NIPAAm

respectively.These two comb-like copolymers were synthesized via ATRP by using a chloromethylated polysulfone as macroinitiator.The molar fraction of PAA and PNIPAAm in the resultant copolymers estimated from 1H-NMR is 0.538 and 0.896

respectively.In using as additives for PSF membranes prepared by the phase inversion process

the comb-like copolymers segregate to the membrane surfaces

delivering improved porosity

average pore diameters

hydrophilicity

and ER properties compared to pure PSF membranes.For instance

20 wt% PSF-g-PAA/PSF and 20 wt% PSF-g-PNIPAAm/PSF blend membranes can be completely wet by water within 35 s and 90 s

respectively.The flux of the aqueous solution through the 20 wt% PSF-g-PAA/PSF membrane decreases with increasing the solution pH valuse from 1 to 6.The water permeation rate through the 20 wt% PSF-g-PNIPAAm/PSF membrane increases with increasing water temperature from 25℃ to 60℃.

关键词

ATRPPSF-g-PAAPSF-g-PNIPAAm共混环境响应膜

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扬州大学化学化工学院

扬州大学江苏省环境工程与环境材料重点实验室

扬州大学测试中心

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