期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 49, 期 -, 页码 132-138出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2013.02.003
关键词
A. Natural fibre; B. Alkali treatment; C. Tensile strength; D. Cross-sectional area
A cross-sectional area evaluation method for multi-cell type natural fibres treated in a highly concentrated alkali solution was proposed using kenaf fibres. Cross-section of kenaf fibres was drastically changed by the alkali treatment compared to the untreated fibres. Conventional data-based approximation (DBA) method for evaluating cross-sectional area was not sufficient, because it was based on cross-sectional area data of the untreated fibres. DBA was modified on the assumption that the shape of each cell in the alkali-treated fibres was an ellipse, and again correlated with hexagonal cross-sectional area, which was approximated by measuring the projection widths on the fibre along 0, 60 and 120 directions. This is the new data-based approximation method (DBA-AT). Results showed that the tensile strength was greatly improved, compared to the strength values estimated by untreated fibre-based DBA. Especially, tensile strength of alkali-treated fibre on the condition of 15 wt%NaOH for 1 h was comparable to untreated fibre. (C) 2013 Elsevier Ltd. All rights reserved.
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