Effect of additives on the interfacial strength of poly (L-lactic acid) and poly ( 3-hydroxy butyric acid) -flax fibre composites

Wong, S, Shanks, R and Hodzic, A 2007, 'Effect of additives on the interfacial strength of poly (L-lactic acid) and poly ( 3-hydroxy butyric acid) -flax fibre composites', Composites Science and Technology, vol. 67, pp. 2478-2484.


Document type: Journal Article
Collection: Journal Articles

Title Effect of additives on the interfacial strength of poly (L-lactic acid) and poly ( 3-hydroxy butyric acid) -flax fibre composites
Author(s) Wong, S
Shanks, R
Hodzic, A
Year 2007
Journal name Composites Science and Technology
Volume number 67
Start page 2478
End page 2484
Total pages 6
Publisher Elsevier Science
Abstract The interfacial shear strength (IFSS), evaluated by single fibre pull-out tests was quantified for various biopolymer-flax fibre composites that were modified with additives. The additives included a plasticiser (glycerol triacetate) (GTA) absorbed onto/into the fibres, 4,4'-thiodiphenol (TDP) that is capable of forming hydrogen bonds between the matrix and cellulose from the fibres, and a hyperbranched polyester (HBP) to impart improved fracture toughness. Fibres were washed with acetone to remove the surface impurities and dried under vacuum before absorption of plasticiser and adsorption of thiodiphenol. It was found that the different additives significantly influenced the IFSS for the biopolymer-flax fibre systems while extraction with acetone had a no effect on the IFSS compared with the untreated fibres. The use of TDP imparted the most significant increase in IFSS whilst the HBP had an opposing effect. The use of ESEM corroborated with the findings of the single fibre pull-out tests.
Subject Physical Chemistry of Materials
DOI - identifier 10.1016/j.compscitech.2006.12.016
Copyright notice © 2007 Elsevier
ISSN 0266-3538
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