A series of hyperbranched polymer surfactants (HBP-C8, HBP-C12 and HBP-C16) were synthesized by the reaction between hydroxyl-terminated hyperbranched polymers (HBP) and fatty acyl chloride. The structure of obtained hyperbranched polymer surfactant was characterized by FTIR, NMR and GPC. The results showed that the products have amphiphilic structure. The thermal property of the hyperbranched polymer surfactant investigated by DSC and TGA was strongly influenced by the length of end alkyl chain. Surface activity of hyperbranched polymer surfactant was analyzed by surface tension method and UV spectrophotometry, respectively. The results showed that hyperbranched polymer surfactant took on better surface activity, which can effectively reduce the surface tension of the water. The hyperbranched polymer surfactant has a lower critical micelle concentration (CMC) and displays single molecular micellar properties, which can package small hydrophilic molecules in relatively low concentration.

中文翻译：

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超支化聚合物表面活性剂：合成，表征和表面张力活性

通过羟基端基超支化聚合物（HBP）与脂肪酰氯的反应，合成了一系列超支化聚合物表面活性剂（HBP-C8，HBP-C12和HBP-C16）。通过FTIR，NMR和GPC对得到的超支化聚合物表面活性剂的结构进行了表征。结果表明产物具有两亲性结构。DSC和TGA研究的超支化聚合物表面活性剂的热性能受烷基末端链长的强烈影响。通过表面张力法和紫外分光光度法分别分析了超支化聚合物表面活性剂的表面活性。结果表明，超支化聚合物表面活性剂具有较好的表面活性，可有效降低水的表面张力。