Sen'i Gakkaishi
Online ISSN : 1884-2259
Print ISSN : 0037-9875
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Structural Analysis for Cellulose Fibers Treated by High Pressure Steam
Naohisa OhshimaTakahiro ItohIhoko ShimohataMikiji ShigematsuMitsuhiko Tanahashi
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2003 Volume 59 Issue 3 Pages 83-86

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Abstract
Morphology of high-pressure steamed cellulose fabrics were investigated using viscose rayon fabrics.Viscose rayon fabrics were steamed at several conditions without (dry-condition) and with (wet-condition) excess water.X-ray diffractometry revealed that the total crystallinity increased with generating cellulose Ⅳ.There were no dependences whether dry- or wet-steaming in their crystal forms.It is suggested that cellulose Ⅳ is generated from paracrystalline structure in the amorphous region.Further, steamed rayons were dyed by 5 kinds of reactive dyes to analyze the amorphous region.The relative color depths (K⁄S value) compared with the control were much decreased in dry-steamed viscose rayons whereas there was a slight difference in wet-steamed ones.The excess water at steaming showed a strong role to control the structure of the amorphous region.
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© 2003 The Society of Fiber Science and Technology, Japan
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