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Materials 2016, 9(5), 400; doi:10.3390/ma9050400

Water Uptake Behavior and Young Modulus Prediction of Composites Based on Treated Sisal Fibers and Poly(Lactic Acid)

Materials + Technologies Group, Engineering College of Gipuzkoa, University of the Basque Country UPV/EHU, Donostia-San Sebastian 20018, Spain
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Academic Editor: Jalel Labidi
Received: 19 February 2016 / Revised: 11 May 2016 / Accepted: 17 May 2016 / Published: 21 May 2016
(This article belongs to the Special Issue Advances in Functionalization of Lignocellulosic Materials)
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Abstract

The main aim of this work was to study the effect of sisal fiber surface treatments on water uptake behavior of composites based on untreated and treated fibers. For this purpose, sisal fibers were treated with different chemical treatments. All surface treatments delayed the water absorption of fibers only for a short time of period. No significant differences were observed in water uptake profiles of composites based on fibers with different surface treatments. After water uptake period, tensile strength and Young modulus values of sisal fiber/poly(lactic acid) (PLA) composites were decreased. On the other hand, composites based on NaOH + silane treated fibers showed the lowest diffusion coefficient values, suggesting that this treatment seemed to be the most effective treatment to reduce water diffusion rate into the composites. Finally, Young modulus values of composites, before water uptake period, were predicted using different micromechanical models and were compared with experimental data. View Full-Text
Keywords: lignocellulosic fiber; composites; surface modification; water uptake lignocellulosic fiber; composites; surface modification; water uptake
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Orue, A.; Eceiza, A.; Peña-Rodriguez, C.; Arbelaiz, A. Water Uptake Behavior and Young Modulus Prediction of Composites Based on Treated Sisal Fibers and Poly(Lactic Acid). Materials 2016, 9, 400.

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