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Rubber toughening of plastics

Part 9Effects of rubber particle volume faction on deformation and fracture in HIPS

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Abstract

Electron microscopy of a high-impact polystyrene (HIPS) polymer, containing 8.5 wt% polybutadiene, shows that the volume fraction, ϕ, of composite rubber particles is 35%. The rubber particle size distribution has 8 median diameter of 1.6 µm. By making a series of blends between this HIPS and polystyrene, it is shown that Young's modulus decreases linearly with ϕ. Dilution with polystyrene results in a sharp drop in notched Charpy impact strength. The relevance of these data to the interpretation of structure-property relationships for a wide range of HIPS morphologies is discussed.

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Bucknall, C.B., Cote, F.F.P. & Partridge, I.K. Rubber toughening of plastics. J Mater Sci 21, 301–306 (1986). https://doi.org/10.1007/BF01144736

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  • DOI: https://doi.org/10.1007/BF01144736

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