Preparation and characterization of maleic anhydride grafted poly (hydroxybutirate-co-hydroxyvalerate) - phbv-g-ma

Preparation and characterization of maleic anhydride grafted poly (hydroxybutirate-co-hydroxyvalerate) - phbv-g-ma

Author do Amaral Montanheiro, Thais Larissa Autor UNIFESP Google Scholar
Passador, Fabio Roberto Autor UNIFESP Google Scholar
de Oliveira, Mauricio Pinheiro Autor UNIFESP Google Scholar
Duran, Nelson Google Scholar
Lemes, Ana Paula Autor UNIFESP Google Scholar
Abstract A compatibilizer agent was successfully produced by grafting maleic anhydride (MA) to poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) chains on a reactive processing by mechanical mixing, using a mixture of PHBV, MA and dicumyl peroxide (DCP) as initiator. The resulting PHBV grafted MA. (PHBV-g-MA) was characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and gel permeation chromatography (GPC), and its properties were compared to neat PHBV. FTIR showed an absorption band at 699 cm(-1) for PHBV-g-MA, related to CH group of grafted anhydride ring. The initial thermal degradation temperature of the compatibilizer agent was reduced when compared to neat PHBV. DSC analysis showed that after grafting MA onto PHBV the crystallization temperature was about 20 degrees C higher than neat PHBV, and the degree of crystallinity was increased. GPC analysis showed that MA when grafted onto PHBV led to a reduction of molecular weight and polydispersity.
Keywords Poly(Hydroxybutyrate-Co-Hydroxyvalerate)
Maleic Anhydride
Graf Copolymer
Compatibilizer
BiopolymerMaleated Poly(3-Hydroxybutyrate)
Ftir Spectroscopy
Carbon Nanotube
Nanocomposites
Polypropylene
Crystallization
Composites
Functionalization
Polyethylene
Morphology
Language English
Sponsor Brazilian Funding institution CAPES
Brazilian Funding institution FAPESP
Date 2016
Published in Materials Research-Ibero-American Journal Of Materials. Sao carlos, v. 19, n. 1, p. 229-235, 2016.
ISSN 1516-1439 (Sherpa/Romeo, impact factor)
Publisher Univ fed sao carlos, dept engenharia materials
Extent 229-235
Origin http://dx.doi.org/10.1590/1980-5373-MR-2015-0496
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000374205900030
SciELO ID S1516-14392016000100229 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/49540

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