|
|
|
|
|
| Davies, Peter; Morvan, C; Sire, O; Baley, C. |
| This paper presents results from a study of fibres extracted from Zostera marina eel-grass collected from the Baltic coast. This species of sea-grass is shown to contain small diameter (around 5 mu m) fibres composed of similar to 57% cellulose, similar to 38% of non-cellulosic polysaccharides (mainly xylan) and similar to 5% of residual matter so-called Klason lignin. This composition is quite different to that of commonly used terrestrial fibres. Single fibre stiffness values up to 28 GPa were measured. This stiffness combined with a low density could provide an attractive reinforcement for composite materials, and may be particularly suitable for use in bio-degradable structures. |
| Tipo: Text |
Palavras-chave: Xylan; Tension; Mechanical behaviour; IR spectroscopy; Sea grass; Fibre. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2607.pdf |
| |
|
|
| Lechat, Céline; Bunsell, A; Davies, Peter; Piant, A. |
| Polyethylene naphthalate (PEN) fibres possess a higher initial stiffness than that of polyethylene terephthalate (PET) fibres and this makes them an attractive competitor for use in mooring ropes and other applications for which a low compliance would be an advantage. The two types of fibres have been characterised and compared in tension, creep and fatigue and found to behave in very similar ways. Failure of both fibres results in similar fracture morphologies although under high cyclic loading a new failure process has been observed for the PEN fibres which combines step by step crack propagation and final failure normal to the fibre axis. In the light of this observation, similar fracture behaviour has also been identified in PET fibres and which, until... |
| Tipo: Text |
Palavras-chave: Fibres; Polyethylene terephthalate; Polyethylene naphthalate; Mechanical behaviour. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1731.pdf |
| |
|
|
|
