Production of core-shell composite polymer particles by the stepwise heterocoagulation method with heat treatment and Him formation

摘要

Core-shell composite polymer particle consisting of a hydrophilic core and a hydrophobic shell was produced by "stepwise heterocoagulation" of small cationic styrene-butyl acrylate-methacryloyoxyethyl trimethylammonium chloride terpolymer particles (SPs) onto a large an-ionic methyl methacrylate-ethyl acrylate-methacrylic acid terpolymer particle (LP), which was proposed by the authors in 1990, with subsequent treatment at higher temperature than the glass transition temperature (Tg) of SP. A film from such a core-shell composite polymer emulsion was prepared by controlling the shell content which was varied by changing the diameter of LP and by increasing the methacrylie acid content in LP.