SciELO - Scientific Electronic Library Online

 
vol.20 número5Avaliação do efeito de um óleo parafínico sobre o comportamento físico-químico de tubulações de polietileno de alta densidadeTenacidade à fratura translaminar dinâmica de laminados compósitos de fibras de carbono e resina epóxi de grau aeronáutico índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Polímeros

versão impressa ISSN 0104-1428

Resumo

LEITE, Marcia C. A. M. et al. Evaluation of biodegradation poly(ε-caprolactone)/green coconut fiber. Polímeros [online]. 2010, vol.20, n.5, pp.339-344.  Epub 22-Dez-2010. ISSN 0104-1428.  http://dx.doi.org/10.1590/S0104-14282010005000063.

Biodegradable polymers such as poly (ε-caprolactone) (PCL) have received increasing attention. New properties are achieved when these polymers are used in composites with natural fibers. Several methods exist for the chemical modification of the fiber to improve adhesion to the polymer matrices. This work deals with the biodegradation in simulated soil of PCL/coconut fiber composites (before and after fiber chemical modification by acetylation - reaction) with the evaluation of mass loss and morphology. Infrared spectroscopy has shown the efficiency of fiber acetylation. The composites buried in simulated soil presented weight loss. The degradation of the samples was confirmed by the morphology modification observed by Scanning Electron Microscopy and Optical Microscopy analysis. The thermal properties analyzed with Differential Scanning Calorimetry have shown differences in the crystallinity content of the matrix with the fiber incorporation.

Palavras-chave : Poli(ε-caprolactone); green coconut fiber; biodegradability; composites; acetylation.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons