With vinyl acetate( Vac) as raw material,butyl acrylate( BA) and acrylate acid(AA) as modifier monomers,potassium persulphate( KPS)as initiator,OP-10、SDS and the polymerizable erauisifier as emulsifier system,Nano-sized Vinyl Acetate/Acrylate emulsions was prepared by semi-continuous seeded emulsion polymerization. And then GPC, stability of latex, DSC, FT-IR tests were made. Particle diameter and structure of the emulsion were detected by laser scatter particle analyzer and transmission electron microscope. The experimental results showed that the Particle diameter of latex was about 100 nanometers and the stability improved greatly.%以醋酸乙烯酯(VAc)为原料,丙烯酸丁酯(BA)和丙烯酸(AA)为改性单体,过硫酸钾(KPS)为引发剂,OP-10,SDS和可聚合乳化剂丙烯氧基壬基酚聚氧乙烯(10)醚硫酸铵为乳化剂体系,采用半连续种子乳液聚合法制备了纳米粒径的醋丙乳液.对得到的乳液进行了分子量,热性能,红外光谱,乳液稳定性等测试,用激光散射粒度仪和透射电镜对乳液粒径和结构进行了表征.研究结果表明,乳液的粒径在100纳米左右,乳液稳定性优良.
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