resumo
A straightforward partial substitution of non-renewable poly(ethylene terephthalate) by renewable homologous poly(ethylene furandicarboxylate) was successfully done by random copolymerisation of bis(2-hydroxyethyl) terephthalate and bis(hydroxyethyl)-2,5-furandicarboxylate. Different stoichiometric amounts of these monomers were used and the ensuing copolyesters were characterised in detail by several physical chemistry, thermal and mechanical techniques. All copolyesters have the expected chemical structure incorporating both aromatic and furanic units in different amounts accordingly to the stoichiometric feed-ratio. In particular the copolyester having 20% of furan units (PET-ran-PEF 4/1) have similar properties to those of PET homopolyester, despite some minor differences, being a semi-crystalline copolyester with similar glass transition and melting temperatures to those of PET. Also, the mechanical performance of this PET-ran-PEF 4/1 copolyester was in accordance with the PET operating temperature range, tan delta and modulus. (C) 2012 Elsevier Ltd. All rights reserved.
palavras-chave
RENEWABLE RESOURCES; POLY(ETHYLENE-TEREPHTHALATE)
categoria
Polymer Science
autores
Sousa, AF; Matos, M; Freire, CSR; Silvestre, AJD; Coelho, JFJ
nossos autores
Andreia Fernandes de Sousa
Investigador Principal
Armando Jorge Domingues Silvestre
Professor Catedrático
Carmen Sofia da Rocha Freire Barros
Investigador Coordenador
Marina Matos
Investigador JúniorProjectos
Development of new polyesters derived from 2,5-furandicarboxylic acid (PTDC/QUI-QUI/101058/2008)
agradecimentos
FCT is gratefully acknowledged for a post-doctorate grant to AFS (SFRH/BPD/73383/2010) and to a fellowship (BI/UI89/5419/2011) to MM. The authors wish to thank to FCT for funding project 'Development of new polyesters derived from 2,5-furandicarboxylic acid' (PTDC/QUI-QUI/101058/2008). They also thank PNRC of FCT for analytical instrumentation support (POCI2010, FEDER, REEQ/515/CTM/2005 POCI) and for funding CICECO (PEst-C/CTM/LA0011/2011).