采用完全由扩散过程控制的乳液聚合法,制备了高固含量的聚醋酸乙烯(PVAc)纳米乳液。讨论了搅拌速率、反应温度、乳化剂种类及用量等对PVAc纳米乳液粒径、乳胶膜吸水率和乳液稳定性等影响,并采用透射电子显微镜(TEM)观察了乳胶粒的微观形貌。结果表明:当搅拌速率低于100r/min、反应温度为55℃和w(十二烷基硫酸钠SDS)=2%(相对于单体质量而言)时,可制得30%固含量、粒径为60nm左右的半透明PVAc纳米乳液。 Polyvinyl acetate (PVAc) nanoemulsions with high solid content were prepared by the emulsion polymerization method completely controlled by diffusion process. The effects of stirring speed, reaction temperature, emulsifier type and dosage on the particle size, water absorption and emulsion stability of PVAc nanoemulsion were discussed. The microscopic morphology of latex particles was observed by transmission electron microscopy (TEM). The results show that a 30% solids content can be obtained with a stirring rate below 100 r / min, a reaction temperature of 55 ° C and w (sodium dodecyl sulfate SDS) = 2% (relative to the mass of the monomer) Semi-transparent PVAc nanoemulsion with particle size of about 60nm.