The Influence of Artificial Photodegradation on Properties of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)(PHBV)/Graphite Nanosheets (GNS) Nanocomposites

The Influence of Artificial Photodegradation on Properties of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)(PHBV)/Graphite Nanosheets (GNS) Nanocomposites

Author Montagna, Larissa Stieven Autor UNIFESP Google Scholar
Montanheiro, Thais Larissa do Amaral Autor UNIFESP Google Scholar
Passador, Fabio Roberto Autor UNIFESP Google Scholar
Lemes, Ana Paula Autor UNIFESP Google Scholar
Rezende, Mirabel Cerqueira Autor UNIFESP Google Scholar
Abstract 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.
Keywords Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)
Graphite nanosheets
Nanocomposites
Artificial photodegradation
xmlui.dri2xhtml.METS-1.0.item-coverage New York
Language English
Sponsor CNPq
CAPES/PVNS
FAPESP (Brazil)
Grant number CNPq: 303287/2013-6
CNPq: 158961/2014-5
Date 2018
Published in Journal Of Polymers And The Environment. New York, v. 26, n. 4, p. 1511-1519, 2018.
ISSN 1566-2543 (Sherpa/Romeo, impact factor)
Publisher Springer/Plenum Publishers
Extent 1511-1519
Origin http://dx.doi.org/10.1007/s10924-017-1051-0
Access rights Closed access
Type Article
Web of Science ID WOS:000427640000018
URI https://repositorio.unifesp.br/handle/11600/55782

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