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Reinforcing potential of wood pulp-derived microfibres in a PVA matrix

Holzforschung, 2006-01, Vol.60 (1), p.53-58 [Peer Reviewed Journal]

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Title:
Reinforcing potential of wood pulp-derived microfibres in a PVA matrix
Author: Chakraborty, Ayan ; Sain, Mohin ; Kortschot, Mark
Subjects: Applied sciences ; aspect ratio ; cellulose crystallinity ; Degradation and preservation ; Exact sciences and technology ; microfibre ; Polymer industry, paints, wood ; Properties and testing ; reinforcement ; Wood ; Wood. Paper. Non wovens
Is Part Of: Holzforschung, 2006-01, Vol.60 (1), p.53-58
Description: In this study, the reinforcing potential of cellulose “microfibres” obtained from bleached softwood kraft pulp was demonstrated in a matrix of polyvinyl alcohol (PVA). Microfibres are defined as fibres of cellulose of 0.1–1 μm in diameter, with a corresponding minimum length of 5–50 μm. Films cast with these microfibres in PVA showed a doubling of tensile strength and a 2.5-fold increase in stiffness with 5% microfibre loading. The theoretical stiffness of a microfibre was calculated as 69 GPa. The study also demonstrated that the strength of the composite was greater at 5% microfibre loading compared to 10% loading. Comparative studies with microcrystalline cellulose showed that the minimum aspect ratio of the reinforcing agent is more criticalthan its crystallinity in providing reinforcement in the composite.
Publisher: Berlin: Walter de Gruyter
Language: English
Identifier: ISSN: 0018-3830
EISSN: 1437-434X
DOI: 10.1515/HF.2006.010
CODEN: HOLZAZ
Source: Alma/SFX Local Collection

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