Synthesis and Evaluation of Urethane Polymers from PET Waste

Volume 17 , Issue 2 , June 2015 , Pages 51-62

Authors

Mahir A. Jalal 1

1 Basrah University, Polymer Research Center, Department of Chemistry and Polymer Technology, Basrah, Iraq

DOI logo 10.17656/jzs.10380

Keywords

Abstract

This study is engaged in synthesis of novel monomer bis(2-hydroxyethyl) by chemical

recycling of PET waste using excess of thioglycol in prescience of (0.5%) zinc acetate

as catalyst. Best yield of monomer was obtained (40%) when using 1:6 PET to

thioglygol molar ratio and 16 hours reaction time. The thiolyzed products were purified

and characterized by FTIR, 1H NMR and CHNS analysis and these characterizations

were proved that nucleophilic attack to carbonyl groups of PET backbone was achieved

by thiol groups instead of hydroxyl groups of thioglycol. Also, urethane polymers were

prepared by reaction of various weight ratios of bis(2-hydroxyethyl) thioterephthalatepoly(ethylene glycol) mixtures with 2,4-toluene diisocyanate monomer. Good

mechanical compression of polyurethane polymers were obtained and evaluated showing

transition properties from rigid to flexible urethane polymers.

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  • Published at20 June 2015

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