Thermal Properties and Biodegradability Studies of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

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For investigating the relationship between thermal properties and biodegradability of poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), several films of PHBV containing different polyhydroxyvalerate (HV) fractions were subjected to degradation in different conditions for up to 49 days. Differential scanning calorimetry (DSC), thermogravimetry (TG), specimen weight loss and scanning electron microscopy (SEM) were performed to characterize the thermal properties and enzymatic biodegradability of PHBV. The experimental results suggest that the degradation rates of PHBV films increase with decreasing crystallinity; the degradability of PHBV occurring from the surface is very significant under enzymatic hydrolysis; the crystallinity of PHBV decreased with the increase of HV fraction in PHBV; and no decrease in molecular weight was observed in the partially-degraded polymer.
Publisher
SPRINGER/PLENUM PUBLISHERS
Issue Date
2012-03
Language
English
Article Type
Article
Keywords

ENZYMATIC DEGRADATION; SINGLE-CRYSTALS; POLYHYDROXYALKANOATES; FILMS; PHA; POLY(EPSILON-CAPROLACTONE); POLY(3-HYDROXYBUTYRATE); POLYESTERS; BACTERIA; POLYMERS

Citation

JOURNAL OF POLYMERS AND THE ENVIRONMENT, v.20, no.1, pp.23 - 28

ISSN
1566-2543
DOI
10.1007/s10924-011-0362-9
URI
http://hdl.handle.net/10203/98017
Appears in Collection
CBE-Journal Papers(저널논문)
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