Synthesis and Thermothickening Behavior of Graft Copolymers Based on poly(N,N-Diethylacrylamide-co-N,N-Dismethylacrylamide) Side Chains

Q2 Materials Science
Yang Xu, Jintang Guo, Di Chen, L. Cao, Meimei Dong
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引用次数: 8

Abstract

ABSTRACT A new type of thermothickening graft copolymer was synthesized through free radical copolymerization and grafting onto technique in aqueous solution. Their molecular structure combines a hydrophilic backbone based on poly(acrylicacid-co-2-acrylamido-2-methylpropane sulfonic acid and thermosensitive side chains based on N,N-diethylacrylamide and N,N-dimethylacrylamide (DMAA). The lower critical solution temperature of poly(N,N-diethylacrylamide) was increased easily by copolymerizing with hydrophilic monomers DMAA. The results demonstrate that the polymers in aqueous solution exhibit a significant increase in viscosity with the temperature rising and their thermothickening behavior is related to various physicochemical parameters such as the concentration of the polymer, shear rate, chemical composition of side chains, salt concentration, and pH value. GRAPHICAL ABSTRACT
基于聚(N,N-二乙基丙烯酰胺-co-N,N-二甲基丙烯酰胺)侧链接枝共聚物的合成及热增稠行为
摘要采用自由基共聚和接枝技术在水溶液中合成了一种新型的热增稠接枝共聚物。它们的分子结构结合了基于聚丙烯酸-co-2-丙烯酰胺-2-甲基丙烷磺酸的亲水主链和基于N,N-二乙基丙烯酰胺和N,N-二甲基丙烯酰胺(DMAA)的热敏侧链。聚(N,N-二乙基丙烯酰胺)与亲水性单体DMAA共聚可提高其低临界溶解温度。结果表明,聚合物在水溶液中的粘度随温度的升高而显著增加,其热增稠行为与聚合物浓度、剪切速率、侧链化学组成、盐浓度和pH值等多种理化参数有关。图形抽象
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来源期刊
Polymer-Plastics Technology and Engineering
Polymer-Plastics Technology and Engineering 工程技术-高分子科学
CiteScore
1.71
自引率
0.00%
发文量
0
审稿时长
4 months
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