Impact modifiers core/shell systems

Impact modification of nylons is generally achieved through the incorporation of reactive groups in the rubber [139, 140]. Since these compositions react with the nylon during the melt processing, the conditions and compositions must be carefully controlled to prevent undesired increases in melt viscosity. While core-shell modifiers have been applied successfully to these systems [141, 142], the most common commercial approach is the use of olefin-based elastomers grafted with functional monomers as maleic anhydride. 

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