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Stress transfer in microfibrillated cellulose reinforced poly(vinyl alcohol) composites
Learning Institute, King Mongkut's University of Technology Thonburi.
School of Materials, University of Manchester.
College of Engineering, Mathematics and Physical Sciences, University of Exeter.
2014 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 65, 186-191 p.Article in journal (Refereed) Published
Abstract [en]

Combined homogenisation and sonication treatments of micron-sized lyocell fibres were used to generate microfibrillated cellulose (MFC) with fibril diameters of ∼350 nm. No further reduction in fibril diameter was observed after 30 min treatment. Poly(vinyl alcohol) (PVA) composites reinforced with these fibrils were fabricated using solvent casting and physical and mechanical properties were investigated. The presence of MFC in PVA increased the thermal degradation of the polymer. An increase in both the tensile strength and modulus of the composites was observed for up to 3 wt.% of fibrils; beyond this point no significant increases were observed. An estimate of ∼39 GPa is made for the fibril modulus based on this increase. Stress-transfer between the polymer resin and the fibrils was investigated using Raman spectroscopy. Stress transfer in the composite is shown to be greater than that of a pure network of fibres, indicating a good fibre-matrix bond

Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 65, 186-191 p.
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-65397DOI: 10.1016/j.compositesa.2014.06.014Scopus ID: 2-s2.0-84904915982OAI: oai:DiVA.org:ltu-65397DiVA: diva2:1136771
Available from: 2017-08-29 Created: 2017-08-29 Last updated: 2017-08-29Bibliographically approved

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Tanpichai, Supachok
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