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Study on Modification of starch with anhydride functional polyethylene using peanut oil as compatibilizer

In recent years, much attention has been focused on making polyethylene degradable. The purpose of this work is to make degradable film from depolymerized tapioca starch and linear- low-density polyethylene (LLDPE) grafted with anhydride maleic (MA), using peroxide benzoyl as initiator and peanut oil as compatibilizer. | Journal of Chemistry Vol. 43 3 P. 392 - 396 2005 STUDY ON MODIFICATION OF STARCH WITH ANHYDRIDE FUNCTIONAL POLYETHYLENE USING PEANUT OIL AS COMPATIBILIZER Part 1 Received 20th-Sept 2004 DO TRUONG THIEN TRAN THI Y NHI DUONG ANH vu NGUYEN TIEN AN Institute of Chemistry Vietnamese Academy of Science and Technology SUMMARY In recent years much attention has been focused on making polyethylene degradable. The purpose of this work is to make degradable film from depolymerized tapioca starch and linear-low-density polyethylene LLDPE grafted with anhydride maleic MA using peroxide benzoyl as initiator and peanut oil as compatibilizer. Effects of MA and tapioca starch content as well as peanut oil on the film qualities were investigated through mixing torque IR spectra thermal analysis scanning electron microscopy SEM photographs and physico-mechanical properties. I - INTRODUCTION Many solutions like recycling incineration landfill and using degradable plastic have been proposed for management of plastic waste. It is increasingly felt that the best alternative would be making plastic degradable. Starch a mixture of amylose and amylopectin is a polymer formed in nature therefore biodegradable. Graft polymerization of starch onto polyethylene provides another method for preparing biodegradable film. An important advantage of graft copolymerization is the fact that starch and polyethylene are held together by chemical bonding rather than existing merely as physical mixture. The two dissimilar polymers tend to be more intimately associated and separation of the two polymer phases is less likely occur 6 . In our report in order to make polyethylene containing polar functional group the graft polymerization of MA onto PE using peroxide 392 benzoyl was done in Haake machine and then resulting product was blended with tapioca starch using peanut oil as compatibilizer. II - EXPERIMENTAl 1. Material - Industrial grade of starch was supplied by a factory in Hoaiduc district Hatay .