CO2调控LCST的温敏水溶性聚合物的合成及性能

材料导报

2020, Vol. 34

Issue (Z2): 516-520

高分子与聚合物基复合材料

CO₂调控LCST的温敏水溶性聚合物的合成及性能

王毓, 赵君, 任俊鹏, 周进康, 李小平

贵州师范学院化学与材料学院,贵阳 550018

Synthesis and Properties of Temperature Sensitive Water-soluble Polymer with CO₂ Regulated LCST

WANG Yu, ZHAO Jun, REN Junpeng, ZHOU Jinkang, LI Xiaoping

School of Chemistry and Materials Science, Guizhou Education University, Guiyang 550018, China

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摘要以N-异丙基丙烯酰胺(NIPAM)和N-乙烯基甲酰胺(NVF)为单体,以过硫酸铵和亚硫酸氢钠为引发剂进行水溶液自由基聚合,合成了共聚物P(NIPAM-NVF),并在碱性条件下水解制得了聚合物P(NIPAM-VAm)。采用傅里叶红外光谱(FTIR)、核磁共振氢谱(¹H-NMR)和凝胶渗透色谱(GPC)对合成的产物进行表征分析,同时利用紫外可见光谱(UV-Vis)和差示扫描量热仪(DSC)对P(NIPAM-VAm)水溶液的相转变行为进行研究。结果表明,所制备的聚合物P(NIPAM-VAm)具有可调控的低临界溶解温度(LCST),通过改变单体配比和聚合物溶液的浓度,可以调控P(NIPAM-VAm)的LCST。而且,在P(NIPAM-VAm)水溶液中通入CO₂可以调控聚合物的LCST。P(NIPAM-VAm)水溶液的LCST具有可逆的CO₂/N₂开关响应性能。

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关键词: N-乙烯基甲酰胺温度响应性 CO₂ LCST可调控性

Abstract: P(N-isopropyl acrylamide-co-vinylamine) (P(NIPAM-VAm) was obtained from the hydrolization of P(N-isopropyl acrylamide-co-N-vinylformamide) (P(NIPAM-NVF) which was synthesized by solution free radical polymerization of N-isopropyl acrylamide (NIPAM) and N-vinylformamide (NVF), using ammonium persulfate and sodium hydrogen sulfite as initiator. Fourier transform infrared spectrometer (FTIR), nuclear magnetic resonance spectroscopy (¹H-NMR) and gel permeation chromatography (GPC) were applied to character the structure, composition and molecular weight of the resultant polymers. The phase transition behavior of the resultant P(NIPAM-VAm) was evaluated by UV-Vis spectroscopy and differential scanning calorimeter (DCS). Experimental results showed that P(NIPAM-VAm) has low critical solution temperature (LCST) which could be controlled by adjusting the molar ration of NIPAM to NVF in the P(NIPAM-VAm) and the concentration of the solution. Moreover, LCST of P(NIPAM-VAm) solution could be tuned by bubbling CO₂ into the system. LCST of P(NIPAM-VAm) solution has reversible response to CO₂ and N₂ switching.

Key words: N-vinylformamide temperature-responsive CO₂ tunable LCST

出版日期: 2020-11-25 发布日期: 2021-01-08

ZTFLH:

TQ423. 92

基金资助: 贵州省自然科学基金(黔科合基础[2018]1122;[2019]1252);国家自然科学基金(21464005);贵州省教育厅青年科技人才基金(黔教合KY字[2018]263)

通讯作者: mailwyu@163.com

作者简介: 王毓,2011年博士毕业于中国科学院成都有机化学研究所,入选2011年中国科学院“西部之光”博士人才培养计划。目前为贵州师范学院化学与材料学院教授,主要研究领域为绿色水性高分子新材料制备工艺及产业化研究、环境功能纳米复合凝胶材料与技术和新型混凝土外加剂设计、合成及生产工艺技术等。先后主持完成国家自然科学基金和省部级科研项目5项,在国内外学术刊物发表论文50余篇,申请中国发明专利15项,获授权5项。

引用本文:

王毓, 赵君, 任俊鹏, 周进康, 李小平. CO₂调控LCST的温敏水溶性聚合物的合成及性能[J]. 材料导报, 2020, 34(Z2): 516-520.
WANG Yu, ZHAO Jun, REN Junpeng, ZHOU Jinkang, LI Xiaoping. Synthesis and Properties of Temperature Sensitive Water-soluble Polymer with CO₂ Regulated LCST. Materials Reports, 2020, 34(Z2): 516-520.

链接本文:

http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2020/V34/IZ2/516

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