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Author: UZOR, CAROLYN CHINOMSO

Title: Physico-Mechanical Properties of Compatibilized natural Rubber/Recycled Poly (Ethylenetereph Thalate)/Dikanut Shell Powder Bio-Composites

Affiliation: Food Science Technology Department
School of Engineering and Engineering Technology
Federal University of Technology, Owerri Imo State

Date: June, 2016

ABSTRACT
Blends of natural rubber(NR) and recycled poly(ethylene terephthalate) (PET) filled with dikanut shell powder (DNS), were prepared by reactive compatibilization in a two roll mill, using maleic anhydride grafted polyisoprene (MAPI) and hexamethylene diamine (HMDA) as dual compatibilizer. Dikanut shell powder was prepared at a particle size of 150µm. A constant blend composition of NR/PET: 70/30 was used with varying filler and compatibilizer ratios of DNS/MAPI/HMDA: 0/0/0, 10/0/0, 15/0/0, 20/0/0, 0/2/0.5, 10/2/0.5, 15/2/0.5, 20/2/0.5, 10/2/0, 10/2/0.3, 10/2/0.5, 10/2/0.7. The effects of filler loading and compatibilizer content on physico-mechanical properties such as tensile strength, modulus, percentage elongation and compression set of NR/PET/DNS composite were investigated.The results show that, tensile strength, modulus, and compression set values increased with increasing filler loading for both compatibilized and uncompatibilized composites.These properties also showed increasing trend with increasing compatibilizer content. However, for compression set, a decreasing trend was observed with increasing compatibilizer content.Percentage elongation showed a decreasing trend with increasing filler loading for both compatibilized and uncompatibilized composites. It also exhibited a decreasing trend with increasing compatibilizer content.