分散聚合法制备聚去氢枞酸丙烯酸乙二醇酯微球

发布时间：2018-01-19 10:40

本文关键词： 去氢枞酸丙烯酸乙二醇酯分散聚合高分子微球　出处：《高分子材料科学与工程》2016年11期 　论文类型：期刊论文

【摘要】：以去氢枞酸丙烯酸乙二醇酯(DAEA)为单体,聚乙烯基吡咯烷酮(PVP)为分散剂,偶氮二异丁腈(AIBN)为引发剂,异丙醇/水(IPA/H_2O)为分散介质,利用分散聚合法制备了聚去氢枞酸丙烯酸乙二醇酯(PDAEA)微球;利用红外光谱、扫描电镜对聚合物结构和微球的粒径及形貌进行了表征。同时考察了分散剂、引发剂和单体浓度,醇水比及反应温度等因素对其粒径及其分散系数的影响。实验结果表明,PDAEA微球的粒径在1~3μm,粒径分布窄;PDAEA微球的粒径随分散剂用量的增加而减小;随单体和引发剂用量、醇水比的增加而增大,并随反应体系温度的升高而增大。
[Abstract]:Ethylene glycol dehydroabietic acid was used as monomer, polyvinylpyrrolidone (PVP) as dispersant and azodiisobutyronitrile (AIBN) as initiator. Poly (ethylene glycol dehydroabietic acid) (PDAEAA) microspheres were prepared by dispersion polymerization of isopropanol / IPA / H _ 2O as dispersion medium. The structure of polymer and the particle size and morphology of microspheres were characterized by IR and SEM. The concentration of dispersant, initiator and monomer were also investigated. The effects of alcohol / water ratio and reaction temperature on the particle size and dispersion coefficient of PDAEA microspheres were investigated. The results showed that the particle size of PDAEA microspheres was 1 渭 m and the particle size distribution was narrow. The particle size of PDAEA microspheres decreases with the increase of dispersant content. The ratio of alcohol to water increases with the amount of monomer and initiator, and increases with the increase of reaction temperature.
【作者单位】：广西大学化学化工学院广西石化资源加工及过程强化技术重点实验室;
【基金】：国家自然科学基金资助项目(21064001) 广西自然科学基金资助项目(2014GXNSFAA118042)
【分类号】：TQ317
【正文快照】： 高分子微球是指直径在纳米级至微米级,形状为球形或其它几何体的高分子材料或高分子复合材料[1]。近几十年来,微米级单分散高分子微球作为功能高分子材料已广泛应用于生物医学、免疫技术、固相载体和高效液相色谱等各种技术领域,因此对这种材料的研究越来越引起人们的关注[2,3

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