Abstract
Styrene-acrylate latex with high glass transition temperature (Tg), low minimum film forming temperature(MFT) and good stability was prepared via core-shell emulsion polymerization. With semicontinuous process, high conversion rate of monomer and low gel rate were achieved. The weight ratio of core monomer to shell monomer was approximately 1.35. It is found that many factors such as emulsifiers, initiators, reaction temperature, pH value and polymerization technology have influences on the permormance of styrene-acrylate latex. The prepared latex was characterized by TEM and FTIR. The obtained latex with Tg of 20.57 °, MFT of 5.0 °, and good stability, had good stability of film forming.
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