Protection of Flax/PLLA Biocomposites from Seawater Ageing by External Layers of PLLA

Protection of Flax/PLLA Biocomposites from Seawater Ageing by External Layers of PLLA

Biocomposites are sensitive to water, and previous work on flax reinforced PLLA showed a large drop in mechanical properties after immersion (Le Duigou et al. 2009). Unreinforced PLLA was much less sensitive. This paper presents a strategy to reduce the influence of wet ageing by adding extra layers...

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Main Authors: A. Le Duigou, J. M. Deux, P. Davies, C. Baley
Format: Article
Language:English
Published: Hindawi Limited 2011-01-01
Series:International Journal of Polymer Science
Online Access:http://dx.doi.org/10.1155/2011/235805
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spelling doaj-762729e38ab3432c967f02b34acb275c2020-11-24T22:08:55ZengHindawi LimitedInternational Journal of Polymer Science1687-94221687-94302011-01-01201110.1155/2011/235805235805Protection of Flax/PLLA Biocomposites from Seawater Ageing by External Layers of PLLAA. Le Duigou0J. M. Deux1P. Davies2C. Baley3LIMATB Laboratoire d'Ingénierie des Matériaux de Bretagne, Equipe Polymères et Composites, rue de Saint Maudé BP 92116, 56321 Lorient Cedex, FranceLIMATB Laboratoire d'Ingénierie des Matériaux de Bretagne, Equipe Polymères et Composites, rue de Saint Maudé BP 92116, 56321 Lorient Cedex, FranceIFREMER Centre de Brest, Materials and Structures Group, BP70, 29280 Plouzané, FranceLIMATB Laboratoire d'Ingénierie des Matériaux de Bretagne, Equipe Polymères et Composites, rue de Saint Maudé BP 92116, 56321 Lorient Cedex, FranceBiocomposites are sensitive to water, and previous work on flax reinforced PLLA showed a large drop in mechanical properties after immersion (Le Duigou et al. 2009). Unreinforced PLLA was much less sensitive. This paper presents a strategy to reduce the influence of wet ageing by adding extra layers of PLLA on the biocomposite surface. Weight gain measurements show that a PLLA coating 350 𝜇m thick reduces weight gain by half, and biocomposite stiffness and strength after ageing are improved by 100% compared to uncoated composite behaviour. Thermal analysis and microscopic examination are used to show damage mechanisms with and without protection. Property changes are shown to be quasilinearly related to weight gain.http://dx.doi.org/10.1155/2011/235805
collection DOAJ
language English
format Article
sources DOAJ
author A. Le Duigou
J. M. Deux
P. Davies
C. Baley
spellingShingle A. Le Duigou
J. M. Deux
P. Davies
C. Baley
Protection of Flax/PLLA Biocomposites from Seawater Ageing by External Layers of PLLA
International Journal of Polymer Science
author_facet A. Le Duigou
J. M. Deux
P. Davies
C. Baley
author_sort A. Le Duigou
title Protection of Flax/PLLA Biocomposites from Seawater Ageing by External Layers of PLLA
title_short Protection of Flax/PLLA Biocomposites from Seawater Ageing by External Layers of PLLA
title_full Protection of Flax/PLLA Biocomposites from Seawater Ageing by External Layers of PLLA
title_fullStr Protection of Flax/PLLA Biocomposites from Seawater Ageing by External Layers of PLLA
title_full_unstemmed Protection of Flax/PLLA Biocomposites from Seawater Ageing by External Layers of PLLA
title_sort protection of flax/plla biocomposites from seawater ageing by external layers of plla
publisher Hindawi Limited
series International Journal of Polymer Science
issn 1687-9422
1687-9430
publishDate 2011-01-01
description Biocomposites are sensitive to water, and previous work on flax reinforced PLLA showed a large drop in mechanical properties after immersion (Le Duigou et al. 2009). Unreinforced PLLA was much less sensitive. This paper presents a strategy to reduce the influence of wet ageing by adding extra layers of PLLA on the biocomposite surface. Weight gain measurements show that a PLLA coating 350 𝜇m thick reduces weight gain by half, and biocomposite stiffness and strength after ageing are improved by 100% compared to uncoated composite behaviour. Thermal analysis and microscopic examination are used to show damage mechanisms with and without protection. Property changes are shown to be quasilinearly related to weight gain.
url http://dx.doi.org/10.1155/2011/235805
work_keys_str_mv AT aleduigou protectionofflaxpllabiocompositesfromseawaterageingbyexternallayersofplla
AT jmdeux protectionofflaxpllabiocompositesfromseawaterageingbyexternallayersofplla
AT pdavies protectionofflaxpllabiocompositesfromseawaterageingbyexternallayersofplla
AT cbaley protectionofflaxpllabiocompositesfromseawaterageingbyexternallayersofplla
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