Image icon  High Impact Polystyrene (HIPS)

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Description: High impact polystyrene (HIPS) or 'rubber-toughened polystyrene' is a two-phase mixture of polybutadiene (a synthetic rubber) in polystyrene. The two phases are immiscible, with polybutadiene crystallising out of the melt to form spheroidal particles. In fact, polystyrene is the first phase to crystallise, forming even an even finer dispersion of polystyrene particles which become trapped within the polybutadiene when a phase inversion occurs at around 10% solidification.
Keywords: blend • composite material • high impact polystyrene (HIPS) • phase inversion • polybutadiene (PB) • polymer • polymer composite • polystyrene (PS) • rubber • rubber-toughened polymer • tough
Categories: Science approaches > Microstructure
Materials > Polymers & elastomers > Plastics > Thermoplastics > Polystyrene (PS)
Testing, analysis & experimentation > Metallography
Scale > Micro
Created by: DoITPoMS, University of Cambridge
J A Curran, Department of Materials Science and Metallurgy, University of Cambridge
Published by: DoITPoMS, University of Cambridge
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Date created: 03 October 2002
Date added: 21 August 2009
Resource ID: 1590