Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/14664
Título: | Biobased grafted polyesters prepared by in situ ring-opening polymerization |
Autor(es): | Moura, I. Nogueira, R. Legare, Véronique Bounor Machado, A. V. |
Palavras-chave: | Ethyl vinyl acetate copolymer e-Caprolactone Lactide In situ polymerization Biodegradable epsilon-Ca prolactone -Caprolactone |
Data: | Jul-2011 |
Editora: | Elsevier 1 |
Revista: | Reactive and Functional Polymers |
Resumo(s): | EVA-g-PLA and EVA-g-PCL copolymers were synthesized by in situ polymerization of e-caprolactone and lactide, in the presence of molten ethylene vinyl acetate (EVA) copolymer, using titanium phenoxide (Ti(OPh)4) as initiator. The materials prepared in a internal batch mixer were characterized by 1H NMR, SEM, FTIR, rheology, DSC, TGA and SEC and the synthesized copolymers identified through selective extraction. The mechanical performance was characterized by tensile tests and the biodegradability by the biochemical oxygen demand method. The results indicated that approximately 11 wt.% of EVA-g- PCL and 8 wt.% of EVA-g-PLA copolymers were synthesized. Moreover, the increase of the Young modulus was higher for the sample containing EVA-g-PCL. This sample also exhibited the higher biodegradability (36%). |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/14664 |
DOI: | 10.1016/j.reactfunctpolym.2011.03.012 |
ISSN: | 1381-5148 |
Versão da editora: | www.elsevier.com/ locate/react |
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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Biobased grafted polyesters prepared by in situ ring-opening polymerization.pdf Acesso restrito! | Biobased grafted polyesters prepared by in situ ring-opening polymerization | 1,34 MB | Adobe PDF | Ver/Abrir |