Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/13236
Título: | Synthesis of biodegradable copolymers based on ethylene vinyl acetate and polylactic acid |
Autor(es): | Moura, I. Machado, A. V. Nogueira, R. Legare, Véronique Bounor |
Palavras-chave: | Copolymers EVA PLA BOD |
Data: | 2010 |
Editora: | Trans Tech Publications |
Revista: | Materials Science Forum |
Resumo(s): | In the present study biodegradable copolymers of ethylene vinyl acetate and polylactic acid were synthesized using transesterification reactions, the structure, morphology, mechanical properties and biodegradability of the produced materials were characterized. Ethylene vinyl acetate was modified with polylactic acid in an internal mixer using titanium propoxide as transesterification catalyst. The graft copolymers were characterized by elemental analysis, infrared spectroscopy, rheology, scanning electron microscopy and thermal analysis. Selective extractions for all copolymers were made, and the results indicate that a maximum of 25 % of EVA-g-PLA copolymer was synthesized by this method. Biodegradation tests were carried out using the standard ISO 14851 (1999), which specifies a method for determining the biochemical oxygen demand in a closed respirometer. This procedure allowed to synthesize biodegradable copolymers with mechanical properties similar to conventional polymers. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/13236 |
DOI: | 10.4028/www.scientific.net/MSF.636-637.819 |
ISSN: | 0255-5476 |
Versão da editora: | http://www.ttp.net/ |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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33_AVM.pdf Acesso restrito! | 1,21 MB | Adobe PDF | Ver/Abrir |