Novel cork-polymer composites reinforced with short natural coconut fibres: Effect of fibre loading and coupling agent addition

last updated: 2013-07-10
TitleNovel cork-polymer composites reinforced with short natural coconut fibres: Effect of fibre loading and coupling agent addition
Publication TypePapers in Scientific Journals
Year of Publication2013
AuthorsFernandes E. M., Correlo V. M., Mano J. F., and Reis R. L.
Abstract

Composites from high density polyethylene filled with cork powder and coconut short fibres, in two different ratios, were prepared in a twin-screw extruder followed by compression moulding process. The main motivation of this work was to improve the mechanical performance without compromising the use of high weight percentage of natural component used in the preparation of cork-based composites. The morphology of the hybrid composites were more homogeneous in the presence of the coupling agent (CA) displaying enhanced fibre-matrix adhesion. Moreover, the use of CA based on maleic anhydride promotes a mechanical reinforcement effect on the tensile properties, including the elongation at break. The addition of coconut fibre resulted on an increase of 27% in elastic modulus and 47% in the tensile strength when compared with the unreinforced cork-based (50 – 50) wt.% composite. This work clearly shows that the addition of 10 wt.% of short-coconut fibres, randomly distributed, can be effectively used as reinforcing strategy of cork-based composite materials, preferably in the presence of 2 wt.% of CA.

JournalComposites Science and Technology
Volume78
Pagination56-62
Date Published2013-04-01
PublisherElsevier
DOI10.1016/j.compscitech.2013.01.021
URLhttp://www.sciencedirect.com/science/article/pii/S0266353813000389
KeywordsCork, Extrusion, Hybrid composites, Mechanical Properties, Polymer-matrix composites (PMCs)
RightsopenAccess
Peer reviewedyes
Statuspublished

Back to top