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Impact and flexural properties of flax fabrics and Lyocell fiber-reinforced bio-based thermoset
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Polymeric Materials.
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2011 (English)In: Journal of reinforced plastics and composites (Print), ISSN 0731-6844, E-ISSN 1530-7964, Vol. 30, no 8, 685-697 p.Article in journal (Refereed) Published
Abstract [en]

A bio-based thermoset resin was reinforced with flax fabrics and Lyocell fiber. The effect of different weave architectures was studied with four flax fabrics with different architectures: plain, twill (two different types), and dobby. The effect of the outer ply thickness was studied and characterized with flexural and impact testing. Composites manufactured with plain weave reinforcement had the best mechanical properties. The tensile strength, tensile modulus, flexural strength, flexural modulus, and impact strength were 280MPa, 32GPa, 250MPa, 25GPa, and 75 kJ/m (2), respectively. Reinforcements with twill-weave architecture did not impart appreciable flexural strength or flexural modulus even when the outer thickness was increased. Plain- and dobby (basket woven style)-weave architectures gave better reinforcing effects and the flexural properties increased with an increase in outer thickness. Water absorption properties of the composites were studied and it was observed that the hybridization with Lyocell fiber reduced the water uptake. Field-emission scanning electron microscopy was used to study the micro-structural properties of the composites.

Place, publisher, year, edition, pages
2011. Vol. 30, no 8, 685-697 p.
Keyword [en]
water absorption, impact test, Lyocell fiber, flax fiber, bio-based resin
National Category
Polymer Chemistry Materials Engineering
URN: urn:nbn:se:kth:diva-37556DOI: 10.1177/0731684411405874ISI: 000292998700004ScopusID: 2-s2.0-79960737888OAI: diva2:434423
QC 20110815Available from: 2011-08-15 Created: 2011-08-15 Last updated: 2011-08-15Bibliographically approved

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Blomfeldt, Thomas
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