Please use this identifier to cite or link to this item:
http://repositorio.unicamp.br/jspui/handle/REPOSIP/354825
Type: | Artigo |
Title: | Preparation and characterization of maleic anhydride grafted poly (Hydroxybutirate-CO-Hydroxyvalerate) – PHBV-g-MA |
Author: | Montanheiro, Thaís Larissa do Amaral Passador, Fábio Roberto Oliveira, Maurício Pinheiro de Durán, Nelson Lemes, Ana Paula |
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 20ºC 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. |
Subject: | poli(hidroxibutirato-co-hidroxivalerato) Anidrido maleico Biopolímeros |
Country: | Brasil |
Editor: | UFSCar/Departamento de Engenharia de Materiais |
Rights: | Aberto |
Identifier DOI: | 10.1590/1980-5373-MR-2015-0496 |
Address: | https://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000100229 |
Date Issue: | 2016 |
Appears in Collections: | IQ - Artigos e Outros Documentos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
S1516-14392016000100229.pdf | 1.31 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.