Journal
ULTRAMICROSCOPY
Volume 110, Issue 9, Pages 1192-1197Publisher
ELSEVIER
DOI: 10.1016/j.ultramic.2010.04.014
Keywords
Fibre identification; Polarised light microscopy; Textile bast fibres
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Funding
- Bergen Research Foundation
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Identifying and distinguishing between natural textile fibres is an important task in both archaeology and criminology. Wool, silk and cotton fibres can readily be distinguished from the textile bast fibres flax, nettle/ramie, hemp and jute. Distinguishing between the bast fibres is, however, not easily done and methods based on surface characteristics, chemical composition and cross section size and shape are not conclusive. A conclusive method based on X-ray microdiffraction exists, but as the method requires the use of a synchrotron it is not readily available. In this paper we present a simple procedure for identifying the above mentioned textile bast fibres. The procedure is based on measuring the fibrillar orientation with polarised light microscopy and detecting the presence of calcium oxalate crystals (CaC2O4) in association with the fibres. To demonstrate the procedure, a series of fibre samples of flax, nettle, ramie, hemp and jute were investigated. The results are presented here. An advantage of the procedure is that only a small amount of fibre material is needed. (C) 2010 Elsevier B.V. All rights reserved.
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