Artículos de revistas
Preparation And Characterization Of Maleic Anhydride Grafted Poly (hydroxybutirate-co-hydroxyvalerate) - Phbv-g-ma
Registro en:
Materials Research-ibero-american Journal Of Materials. Universidade Federal De Sao Carlos, Dept Engenharia Materials, v. 19, p. 229 - 235, 2016.
1516-1439
1980-5373
WOS:000374205900030
10.1590/1980-5373-MR-2015-0496
Autor
do Amaral Montanheiro
Thais Larissa; Passador
Fabio Roberto; de Oliveira
Mauricio Pinheiro; Duran
Nelson; Lemes
Ana Paula
Institución
Resumen
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) 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. 19 1 229 235 Brazilian Funding institution CAPES Brazilian Funding institution FAPESP Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)