Thermoresponsive star polymers are synthesized by using poly(NIPAM‐b‐DMA) diblock copolymer and β‐cyclodextrin (β‐CD). The synthesis of thermoresponsive diblock copolymer (TRP) is carried out by reversible addition–fragmentation chain transfer mediated aqueous polymerization using N‐isopropylacrylamide (PNIPAM) and di‐methylacrylamide as monomers. Mercaptopropionic acid is used as in situ chain transfer agent (CTA) to synthesize PNIPAM, i.e., macro‐CTA. The polymeric materials are characterized by Fourier‐transform infrared spectroscopy, gel permeation chromatography, ¹H‐NMR, particle size measurement, scanning electron microscopy, thermogravimetric analysis, UV–vis spectroscopy, and X‐ray diffraction analysis. PNIPAM, TRP, and b‐CD grafted thermoresponsive diblock copolymer (β‐CD‐TRP) show lower critical solution temperature at 32.8, 34.3, and 36.8 °C, respectively. TRP and β‐CD‐TRP are also studied for the removal of model contaminant (kaolin). Among all grades, β‐CD‐TRP 4 shows the best performance in the removal of kaolin from aqueous solution at 25 and 50 °C.

中文翻译：

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基于 β-环糊精的刺激响应星形共聚物的合成、表征和絮凝研究：环境修复。

使用聚(NIPAM- b -DMA)二嵌段共聚物和β-环糊精(β-CD)合成热响应星形聚合物。以N-异丙基丙烯酰胺(PNIPAM)和二甲基丙烯酰胺为单体，通过可逆加成-断裂链转移介导的水相聚合合成热响应性二嵌段共聚物(TRP)。巯基丙酸用作原位链转移剂（CTA）来合成PNIPAM，即大分子CTA。通过傅里叶变换红外光谱、凝胶渗透色谱、¹ H-NMR、粒度测量、扫描电子显微镜、热重分析、紫外-可见光谱和 X 射线衍射分析对聚合物材料进行表征。PNIPAM、TRP 和b -CD 接枝热响应二嵌段共聚物 (β-CD-TRP) 的临界溶液温度较低，分别为 32.8、34.3 和 36.8 °C。TRP 和 β-CD-TRP 也用于去除模型污染物（高岭土）。在所有等级中，β-CD-TRP 4 在 25 和 50 °C 从水溶液中去除高岭土方面表现出最佳性能。