Journal
JOURNAL OF POLYMERS AND THE ENVIRONMENT
Volume 26, Issue 4, Pages 1511-1519Publisher
SPRINGER
DOI: 10.1007/s10924-017-1051-0
Keywords
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate); Graphite nanosheets; Nanocomposites; Artificial photodegradation
Categories
Funding
- CNPq [303287/2013-6, 158961/2014-5]
- CAPES/PVNS
- FAPESP (Brazil)
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The potential use of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/graphite nanosheets (GNS) as a biodegradable nanocomposite has been explored. PHBV/GNS nanocomposites films were prepared by solution casting at various concentrations of GNS-0.25, 0.50 and 1.00 wt% GNS. The films were exposed to artificial ultraviolet radiation (UV) during 52 h. The effect of GNS on PHBV photodegradation was investigated and compared to neat PHBV film. The artificial photodegradation induced changes in physical (weight loss), chemical carbonyl index by Fourier transform infrared spectroscopy, thermal degree of crystallinity and melting temperature by differential scanning calorimetry and morphological scanning electron microscopy characteristics. Based on the results obtained from aforementioned analyzes it was verified that GNS inhibits the oxidative degradation of PHBV matrix.
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