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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Role of polyethylene-graft-glycidyl methacrylate compatibilizer on the biodegradation of poly(epsilon-calprolactone)/cellulose acetate blends

Texto completo
Autor(es):
Rosa, D. S. [1] ; Bardi, M. A. G. [1] ; Guedes, C. G. F. [1] ; Angelis, D. A. [2]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Sao Francisco, Programa Posgrad Stricto Sensu Engenharia & Cienc, Lab Polimeros Biodegradaveis & Solucoes Ambientai, BR-13251900 Itatiba, SP - Brazil
[2] Univ Estadual Paulista, Dept Bioquim & Microbiol, BR-13506900 Itatiba, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: POLYMERS FOR ADVANCED TECHNOLOGIES; v. 20, n. 12, p. 863-870, DEC 2009.
Citações Web of Science: 2
Resumo

Biodegradable polymers provide an attractive solution to reduce environmental pollution caused by the accumulation of plastic waste in landfills. In this study, the effect of polyethylene-graft-glycidyl methacrylate (PE-g-GMA) on the biodegradation of blends of poly(epsilon-caprolactone) (PCL) and cellulose acetate (CA) (80/20, 60/40, 40/60, and 20/80 PCL/CA, w/w) was assessed by mass retention, tensile strength, and morphological properties. The principal fungal strains present in the soil after biodegradation were also identified. PCL and the blends containing 60% and 80% PCL showed greater mass loss and superficial change in simulated soil. PE-g-GMA increased the tensile strength retention during 3 months of aging in simulated soil. Scanning electron microscopy (SEM) indicated that pure PCL was more porous, which enhanced the hydrolysis and biodegradation of PCL. PE-g-GMA decreased the mass loss of the polymers, possibly by enhancing the interaction between PCL and CA, with the formation of hydrogen bonds between the carbonyl groups of PCL and the hydroxyl groups of CA. This effect was marked in blends with >40% PCL. Microbiological analysis revealed the presence of several species of fungi in the soil. Copyright (C) 2009 John Wiley \& Sons, Ltd. (AU)

Processo FAPESP: 04/13359-8 - Avaliação do efeito de aditivos pró-oxidantes em blendas de polipropileno e amido plastificado
Beneficiário:Marcelo Augusto Gonçalves Bardi
Linha de fomento: Bolsas no Brasil - Iniciação Científica