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Abstract
Recycled PET (from soft drink bottle) reacted with diethylene glycol (DEG) to produce oligomers with various molecular weights depending on the DEG/PET ratios. The structure of the oligomers was characterized by LC-MS, and the molecular weight was also identified by titration method. The obtained oligomer from DEG/PET:1/1 is a mixture of trimers, pentamers or heptamers with EG/DEG end groups. The reaction time decreases as the catalyst concentration increases. The oligomer could be further modified to be used as polyester polyol for the valuable polyurethane industry/unsaturated polyester.
Issue: Vol 11 No 6 (2008)
Page No.: 92-99
Published: Jun 30, 2008
Section: Natural Sciences - Research article
DOI: https://doi.org/10.32508/stdj.v11i6.2655
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