Journal
POLYMER DEGRADATION AND STABILITY
Volume 91, Issue 11, Pages 2654-2659Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2006.04.030
Keywords
carbohydrate-based polyesters; poly(ethylene terephthalate) (PET) analogs; poly(ethylene isophthalate) (PEI) analogs; random co-polyesters; hydrolytic degradation
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The hydrolytic degradation of a series of homo- and co-polyesters analogous to poly(ethylene terephthalate) (PET) and poly(ethylene isophthalate) (PEI), prepared from carbohydrate-based monomers, was studied. The degradation process was carried out at temperatures of approximately 10 degrees C above the T-g of the polymers. All the studied polyesters were found to degrade at significant rates, and degradability showed a clear dependence on the configuration of the sugar units present in the polymer chain. No weight loss was detected upon degradation, apparently due to the non-solubility of the degraded products in the aqueous incubation medium. Hydrolysis of co-polyesters took place preferentially by cleavage of the ester groups of the sugar units. (c) 2006 Elsevier Ltd. All rights reserved.
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