R lim and w s chow school of materials and mineral

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Unformatted text preview: se in crystallization temperature compared with the respective neat matrix. This indicated that the presence of OMMT in the PET matrix would retard the growth of spherulites. On the other hand, the thermal stability of both the vPET and rPET (e.g. T 50, T75 and Td) showed no significant changes with the incorporation of OMMT. However the T25 of vPET increased by 10 % with the incorporation of 9 wt % clay which is attributed to the formation of thermal insulating char layer during decomposition. POLY-O14 ENVIRONMENTALLY DEGRADABLE LLDPE/SOYA POWDER BLENDS Sam Sung Ting, Hanafi Ismail and Zulkifli Ahmad School of Materials and Mineral Resources Engineering, USM Engineering Campus, 14300 Nibong Tebal, Pulau Pinang, Malaysia E-mail: sam.sungting@gmail.com Petroleum based polymer linear low density polyethylene (LLDPE) was blended with protein based natural polymer, soya powder. The blends have been compatibilised by epoxidised natural rubber with 50 mol % epoxidation (ENR 50). Tensile properties, surface morphology and weight loss weathered samples were investigated as function of weath ering time. The outdoor exposure time was last for 1 year. Tensile strength and elongation at break (EB) of both uncompatibilised and compatibilised blends reduced as a result of thermal oxidation, moisture effect and biodegradation. The increment of the modulus after exposure was due to the embrittlement effect. It is interesting that the retention of the tensile strength and EB of compatibilised blends was lower than uncompatibilised blends after weathering test. The weight loss of the compatibilised blen ds was higher than uncompatibilised blends after weathering. The morphology from SEM also indicated the leaching effect and biodegradation of compatibilised blends was more obvious. 225 23rd-25th June 2010 3rd ICYC 2010 Universiti Sains Malaysia POLY-O15 THE INFLUENCE OF FIBER SURFACE TREATMENT ON WATER ABSORPTION AND MECHANICAL PROPERTIES OF KENAF-POLYPROPYLENE COMPOSITES N.M Ahmad Khairuddin and *R. Mat Taib School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, 14...
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This note was uploaded on 02/17/2011 for the course CHEMISTRY 101 taught by Professor Csr during the Spring '11 term at University of Louisville.

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