Influence Of Chemical Modification On Energy Absorption Of Starch Modified Natural Rubber Based Composites

Azly, Nur Hidayah (2017) Influence Of Chemical Modification On Energy Absorption Of Starch Modified Natural Rubber Based Composites. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Nowadays,there are abundant of vulcanized rubber waste, especially in automotive industries which lead to environmental pollution.In order to overcome the problem, the natural rubber composite was recently combined with natural filler to produce biodegradable rubber product.In this research,the influence of chemical modification on energy absorption of starch modified natural rubber composite was studied.The objectives of this research are to evaluate the effect of chemical modifications on energy absorption properties of starch modified natural rubber composites and to correlate the energy absorption of starch modified natural rubber based composites with its hardness and morphological characteristics.This research involves preparation of raw material,chemical modification of starch,fabrication of composites as well as testing and analysis of the final product.For chemical modification of starch,the starch was treated by using 5% of silane and 5%of glycerol to enhance their matrix-fiber interaction.For the composites fabrication,NR and CB were undergoing a mixing process in the internal mixer with mixing temperature 60 ̊C,rotor speed 120rpm,mixing time 11minutes and hot pressing machine at temperature 150 ̊C under compression 110kgf to produce a Polymer Matrix Composites (PMC) blend.The mechanical and physical testing involve in this research were impact,hardness and density,respectively.The morphology was observed by using Scanning Electron Microscopy (SEM).Furthermore,to identifying types of chemical bond,X-ray Diffraction and Raman Spectroscopy were used.It was observed composites without chemical surface modification produced high impact strength with 126.5 J/m properties than composites with chemical surface modification.However,to be compare among the treated starch,silane shows the highest impact strength 120.57 J/m regarding to its higher interfacial interaction of treated fiber matrix.

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