以松香与甲基丙烯酸-2-羟乙酯酯化物(HR)、苯乙烯(St)和甲基丙烯酸(MAA)为单体,二乙烯基苯(DVB)为交联剂,偶氮二异丁腈为引发剂,采用悬浮聚合法制备含松香的羧基化聚合物微球.研究St和MAA质量比例、反应温度、分散剂用量对微球性能的影响,利用红外光谱、光学显微镜、扫描电镜和热重分析等对微球结构进行表征,利用电导滴定法对微球表面羧基含量进行测定.结果表明,成功制备了含松香的羧基化聚合物微球,微球球形较好,表面羧基含量达0.146 mmol/g,加入MAA后微球的热稳定性变化不大.合成微球较优工艺条件:m(HR)∶m(St+MAA)∶m(DVB)=1∶1.5∶0.4,m(St)∶ m(MAA)=3∶3,明胶用量4％(质量分数),反应温度为80℃.
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