Abstract
In order to improve the mechanical properties of composite materials, one of the renowned techniques that can be applied is the filler modification. Still, no works were concern on this particular matter under dynamic standpoint. Therefore, in this study, both untreated and treated polypropylene/muscovite layered silicate composites were tested under static and dynamic loading up to 1100 s-1 using the universal testing machine (UTM) and the split Hopkinson pressure bar (SHPB) apparatus. Muscovite particles were treated with lithium nitrate and cetyltrimethylammonium bromide as a surfactant through surface modification. Results show that the treated polypropylene/muscovite samples with fine state of dispersion level shows superior mechanical performances as compared to untreated polypropylene/muscovite samples under an extensive range of strain rate investigated. Furthermore, the mechanical properties of both tested polypropylene/muscovite layered silicate composites also display great reliance on the strain rate applied where strength and stiffness properties were gradually increased with increasing strain rate. Key words: Organic modification; Strength and stiffness properties; Muscovite particles; Split Hopkinson pressure bar apparatus; Strain rates
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