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以过硫酸铵(APS)为引发剂,对丙烯酸甲酯(MA)的乳液聚合进行了研究,得出在MA/H2O重量比为0.5时,60℃下合成粒径分布均匀的聚丙烯酸甲酯(PMA)种子乳液的最佳配方为:十二烷基硫酸钠(SDS)、(APS)和(NaHCO3)的浓度分别为11.6、1.72和4.69mmol/L.然后以PMA乳液为种子,以油溶性偶氮二异丁腈(AIBA)为引发剂,分别进行不溶胀与溶胀条件下醋酸乙烯酯(VA)的种子乳液聚合,并以磷钨酸为染色剂,用透射电子显微镜(TEM)对胶粒形态进行了表征
The emulsion polymerization of methyl acrylate (MA) with ammonium persulfate (APS) as the initiator was studied. The results showed that at a weight ratio of MA / H2O of 0.5, polyacrylic acid with uniform particle size distribution was synthesized at 60 ℃. The best formulation of PMA seed emulsion was sodium dodecyl sulfate (SDS), (APS) and (NaHCO3) at concentrations of 11.6, 1.72 and 4.69 mmol / L, respectively. Then PMA emulsion was used as seed and oil-soluble azobisisobutyronitrile (AIBA) as initiator to separate the seed emulsion polymerization of vinyl acetate (VA) under non-swelling and swelling conditions, The morphology of colloidal particles was characterized by transmission electron microscopy (TEM)