Impact modification of styrene‐acrylonitrile copolymers by methyl methacrylate grafted rubbers
作者： H. Keskkula , H. Kim , D. R. Paul
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摘要: Monodisperse methyl methacrylate grafted latex rubber (MMA-g) particles (0.12-0.13 µm) have been used for the impact toughening of a series styrene-acrylonitrile (SAN) copolymers varied AN content. It was found that MMA-g are most effective in SANs containing about 25 to 34% AN. Mechanical properties, interphase adhesion, mechanical dilatometry, and phase morphology by transmission electron microscopy were determined on blends 20-30% rubber. Also, miscibility range poly(methyl methacrylate) (PMMA) graft considered attempting analyze relationships between properties characteristic features blends. Issues relating strength deformation mechanisms, particle discussed. appears high some may be caused primarily certain morphological such as clustering or small interparticle distances. Thus, craze initiation, shear yielding, significant matrix all contribute overall ductility blend.
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