ABS Polymer as a Colloidal Dispersion
ABS polymer consists of a dispersion of rubber particles in a matrix of styrene-acrylonitrile (SAN) copolymer resin. The rubber is usually polybutadiene. The initials ABS stand for the three monomers present, but this tells nothing about the morphology. Since the rubber and the SAN copolymer are not mutually soluble, there are two polymeric phases. The role of the rubber phase is to provide toughness to this structural thermoplastic. The plastic will be shaped by melt extrusion and molding. It is therefore important that the morphology which provides impact strength be able to survive melt processing.
KeywordsLatex Particle Colloidal Dispersion Rubber Particle Graft 880A Graft Ratio
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