OALib Journal期刊
两步蒸馏沉淀聚合法制备红霉素表面分子印迹聚合物及其性能研究
DOI: 10.11777/j.issn1000-3304.2014.14123
Keywords: 两步蒸馏沉淀聚合 ,表面分子印迹 ,红霉素
Abstract:
采用两步蒸馏沉淀聚合法,制备了红霉素表面分子印迹聚合物.第一步制备了甲基丙烯酸和二乙烯基苯共聚物微球(PMAA-co-DVB),将其作为内核,再通过第二步蒸馏沉淀聚合,以甲基丙烯酸(MAA)为功能单体,二乙烯基苯(DVB)为交联剂,偶氮二异丁腈(AIBN)为引发剂,红霉素(EM)为模板分子,内核表面聚合一层分子印迹膜层,从而制得具有"核-壳"结构的红霉素表面分子印迹聚合物.通过激光粒径测定、扫描电子显微镜以及结合实验对其形貌和结合性能进行表征.结果表明,在聚合物单体体积分数为7%时,制备出的PMAA-co-DVB微球形态良好,当EM与MAA的比例为14,第二步蒸馏沉淀聚合中单体体积分数为2.8%时,所得的印迹材料结合性能最佳,对EM最大结合量为76.8mg/g,结合达到平衡的时间为90min.对红霉素的识别能力高于对其结构类似物罗红霉素.
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