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Apparent interfacial shear strength of short-flax-fiber/starch acetate composites
University of Latvia, Latvia.
University of Latvia, Latvia; Ventspils University College, Latvia.
RISE, Swerea, SICOMP. Luleå University of Technology, Sweden.ORCID iD: 0000-0002-5210-4341
DTU Technical University of Denmark, Denmark.
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2016 (English)In: International Journal of Adhesion and Adhesives, ISSN 0143-7496, E-ISSN 1879-0127, Vol. 64, p. 78-85Article in journal (Refereed) Published
Abstract [en]

The paper deals with an indirect industry-friendly method for identification of the interfacial shear strength (IFSS) in a fully bio-based composite. The IFSS of flax fiber/starch acetate is evaluated by a modified Bowyer and Bader method based on an analysis of the stress-strain curve of a short-fiber-reinforced composite in tension. A shear lag model is developed for the tensile stress-strain response of short-fiber-reinforced composites allowing for an elastic-perfectly plastic stress transfer. Composites with different fiber volume fractions and a variable content of plasticizer have been analyzed. The apparent IFSS of flax/starch acetate is within the range of 5.5-20.5 MPa, depending on composition of the material. The IFSS is found to be greater for composites with a higher fiber loading and to decrease with increasing content of plasticizer. The IFSS is equal or greater than the yield strength of the neat polymer, suggesting good adhesion, as expected for the chemically compatible constituents.

Place, publisher, year, edition, pages
Elsevier Ltd , 2016. Vol. 64, p. 78-85
Keywords [en]
Flax fiber, Green composite, Interfacial shear strength, Thermoplastic starch, Fiber reinforced plastics, Flax, Linen, Plasticizers, Reinforced plastics, Reinforcement, Sheet molding compounds, Stress-strain curves, Yarn, Apparent interfacial shear strength, Elastic perfectly plastic, Fiber volume fractions, Green composites, Short-fiber-reinforced composites, Fibers
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-41058DOI: 10.1016/j.ijadhadh.2015.10.007Scopus ID: 2-s2.0-84945578051OAI: oai:DiVA.org:ri-41058DiVA, id: diva2:1377022
Available from: 2019-12-10 Created: 2019-12-10 Last updated: 2019-12-10Bibliographically approved

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