亚微米中空聚合物微球的制备及其形貌调控  

Preparation and morphology control of submicro-hollow polymer microspheres

作　　者：陈国顺 李雪坤 尤雅芳 崔慧 卞嘉祺 罗勇 杨维成 CHEN Guoshun;LI Xuekun;YOU Yafang;CUI Hui;BIAN Jiaqi;LUO Yong;YANG Weicheng(State Key Laboratory of Polyolefins and Catalysis,Shanghai 200062,China;Shanghai Key Laboralory of Catalysis Technology for Polyolefins,Shanghai 200062,China;Shanghai Research Institute of Chemical Industry,Shanghai 200062,China)

机构地区：[1]聚烯烃催化技术与高性能材料国家重点实验室,上海200062 [2]上海市聚烯烃催化技术重点实验室,上海200062 [3]上海化工研究院有限公司,上海200062

出　　处：《精细化工》2020年第5期941-946,1009,共7页Fine Chemicals

基　　金：上海市科学技术委员会资助(18120731100,18511109200)。

摘　　要：以甲基丙烯酸(MAA)、甲基丙烯酸甲酯(MMA)、甲基丙烯酸丁酯(BMA)、苯乙烯(St)、三羟甲基丙烷三丙烯酸酯(TMPTA)为原料,采用乳液聚合协同碱渗透溶胀法,制备了亚微米中空聚合物微球(HPM)。通过SEM、TEM、DLS分别对HPM的形貌和粒径进行了表征,并考察了HPM的遮盖性能。考察了引发剂用量对核粒径的影响、中间层和壳层聚合物质量比对HPM形貌结构及其遮盖性能的影响。结果表明:在核制备过程中,核的粒径随引发剂用量的增加而减小;对于平均粒径为148 nm的核,当中间层m(MAA)∶m(BMA)∶m(MMA)=3∶10∶87,壳层m(St)∶m(TMPTA)=97∶3时,可制备平均粒径414 nm、中空率为40.6%的HPM,且HPM表面较为光滑,此时HPM具有优异的遮盖性能,遮盖度达到66%。Submicro-hollow polymer microspheres were prepared by emulsion polymerization and alkali osmotic swelling method using methacrylic acid(MAA), methyl methacrylate(MMA), butyl methacrylate(BMA), styrene(St), and trimethylolpropane triacrylate(TMPTA) as raw materials. The morphology and particle size of the hollow polymer microspheres were characterized by SEM, TEM and DLS. The covering performances of hollow polymer microspheres were also tested. The effect of the initiator dosage on the particle size of core and the effect of mass ratio of interlayer to shell on the morphology and covering performance of the hollow polymer microspheres were investigated. The results showed that the particle size of core decreased with the increasing initiator dosage. For the core with an average particle size of 148 nm, hollow polymer microspheres with smooth surface were obtained when m(MAA)∶m(BMA)∶m(MMA)= 3∶10∶87(as interlayer) and m(St)∶m(TMPTA)= 97∶3(as shell). The average particle size of the hollow polymer microspheres was 414 nm and their hollow rate was 40.6%. The as-synthesized hollow polymer microspheres exhibited excellent covering performance with a covering rate up to 66%.

关 键 词：中空聚合物微球 形貌调控 乳液聚合 功能材料 

分 类 号：TQ637[化学工程—精细化工] TQ317