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水性聚氨酯为表面活性剂的SiO2-聚甲基丙烯酸甲酯复合微球的细乳液法制备

, PP. 112-118

Keywords: 水性聚氨酯,可聚合表面活性剂,双原位,细乳液,复合微球

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Abstract:

采用异佛尔酮二异氰酸酯(IPDI)、聚醚二元醇N210和二羟甲基丙酸(DMPA)为主要反应原料,合成出羧酸型水性聚氨酯,并以甲基丙烯酸羟乙酯(HEMA)对其进行C=C封端,然后使用该水性聚氨酯作为可聚合表面活性剂,采用双原位细乳液法,不同引发剂体系引发聚合,制备出SiO2-聚甲基丙烯酸甲酯复合微球。通过TEM、FTIR和TGA等测试方法对所得产物进行了表征分析。结果表明,使用水性聚氨酯表面活性剂(PUS)所制备的SiO2-聚甲基丙烯酸甲酯复合微球形貌,不同于传统小分子表面活性剂所制得产物的形貌,而且引发剂类型对SiO2-聚甲基丙烯酸甲酯复合微球形貌有较大影响。

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