Processing and characterization of composites of poly(3-hydroxybutyrate-co-hydroxyvalerate) and lignin from sugar cane bagasse

Processing and characterization of composites of poly(3-hydroxybutyrate-co-hydroxyvalerate) and lignin from sugar cane bagasse

Author Camargo, Francisco A. Google Scholar
Innocentini-Mei, Lucia H. Google Scholar
Lemes, Ana Paula Autor UNIFESP Google Scholar
Moraes, Sandra G. Google Scholar
Duran, Nelson Google Scholar
Institution Universidade Estadual de Campinas (UNICAMP)
Universidade Federal de São Paulo (UNIFESP)
Univ Metodista Piracicaba
Abstract A biodegradable polymer composite containing lignin from sugarcane bagasse and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) was produced and characterized in terms of its thermal, morphological, and mechanical properties. for comparison with the properties of the composites, the properties of the isolated composite components (lignin and PHBV) were also determined. the characterizations were carried out by Fourier transformed infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and mechanical properties. in the micrograph images, no physical contact between filler and matrix was verified. the thermal decomposition profiles of composites depend on the lignin/PHBV proportions, and their residual mass increased as a function of lignin amount. Higher temperatures were necessary to promote PHBV crystallization in the presence of lignin. However, the crystalline degree of composites was not affected by the lignin. the results obtained in the mechanical tests showed that the lignin addition caused a decrease of mechanical properties.
Keywords Natural polymers
lignin
PHBV
characterization
composite
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Pronex
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Date 2012-02-01
Published in Journal of Composite Materials. London: Sage Publications Ltd, v. 46, n. 4, p. 417-425, 2012.
ISSN 0021-9983 (Sherpa/Romeo, impact factor)
Publisher Sage Publications Ltd
Extent 417-425
Origin http://dx.doi.org/10.1177/0021998311418389
Access rights Closed access
Type Article
Web of Science ID WOS:000299737400006
URI http://repositorio.unifesp.br/handle/11600/34613

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