Abstract
This article is an extensive investigation on particle coagulation growth in emulsion polymerization proposed by our team (Colloid and Polymer Science, 2013, 291, 2385–2398). Monodispersed, large-scale, high-solid content poly (butyl acrylate) latex was obtained by varying the reaction procedures in previous studies. However, the present method, which could be used in other monomer systems such as styrene, methyl methacrylate, or the copolymerization of different monomers, has not been reported to date. In this article, the particle formation and growth behaviors of different monomer compositions were investigated in regard to the range of application and to clarify the effect of monomer characteristics on particle coagulation. Experimental results indicated that polymer characters such as hydrophilicity play an important role in particle coagulation, which was increased with increasing monomer hydrophilicity. Moreover, particle coagulation could improve reaction system stability and enhance the likelihood of obtaining a high solid content. The optimal systems for styrene, methyl methacrylate, and butyl acrylate were 40, 50, and 60 wt%, respectively, due to variation in monomer hydrophilicity.
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