Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/30701
Título: | Functionalized cork-polymer composites (CPC) by reactive extrusion using suberin and lignin from cork as coupling agents |
Autor(es): | Fernandes, E. M. Aroso, Ivo Manuel Ascensão Mano, J. F. Covas, J. A. Reis, R. L. |
Palavras-chave: | Cork Cork composite Coupling agent Electron microscopy Extrusion Fibre/matrix bond Lignin Suberin Polymer–matrix composites (PMCs) A. Polymer-matrix composites (PMCs) B. Fibre/matrix bond D. Electron microscopy E. Extrusion |
Data: | Nov-2014 |
Editora: | Elsevier 1 |
Revista: | Composites Part B: Engineering |
Resumo(s): | High density polyethylene (HDPE) and cork powder were compounded in a co-rotating twin-screw extruder to obtain cork-polymer composites (CPC) with improved properties. Benzoyl peroxide (BPO) was used as initiator agent, and suberin or lignin isolated from cork enhanced filler-matrix bonding and promoted mechanical reinforcement with environmental benefits. The novel composites were characterised in terms of dimensional stability, evolution of morphology, thermal and mechanical properties and their performance was compared with that of composites containing polyethylene-grafted maleic anhydride (PE-g-MA) as coupling agent. As expected, composites with coupling agent present higher mechanical properties, lower water uptake and thickness swelling variation. Suberin acts as plasticizer with antioxidant benefits, while lignin works as a coupling agent, improving tensile modulus and maximum strength. Increasing lignin content does not improve the mechanical properties but improves thermal stability. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/30701 |
DOI: | 10.1016/j.compositesb.2014.07.028 |
ISSN: | 1359-8368 |
Versão da editora: | http://www.sciencedirect.com/science/article/pii/S1359836814003084 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | 3B’s - Artigos em revistas/Papers in scientific journals IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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18093-Fernandes2014_Functionalized CPC by reactive extrusion using suberin and lignin from cork as coupling agents.pdf | 3,9 MB | Adobe PDF | Ver/Abrir |