화학공학소재연구정보센터
Korea Polymer Journal, Vol.9, No.2, 122-128, April, 2001
Effect of Poly(butyl acrylate)-Poly(methyl methacrylate) Rubber Particle Texture on the Toughening Behavior of Poly(methyl methacrylate)
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Monodisperse composite latex particles with size of ca. 300 nm, which consist of n-butyl acrylate as a soft phase and methyl methacrylate as a hard phase with different morphology, were synthesized. by seeded multi-stage emulsion polymerization. Three types of composite latex particles including random-, core/shell-, and gradient-type particles were obtained by using different monomer feeding methods during semi-batch emulsion polymerization. Effect of poly(butyl acrylate)-poly(methyl methacrylate) rubber particle morphology on the mechanical and theological properties of rubber toughened poly(methyl methacrylate) was investigated. Among three different rubber particles, the gradient-type rubber particle showed better toughening effect than others. No significant variation of theological property of poly(methyl methacrylate)/rubber blends was observed for the different rubber particle morphology.
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