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Chemical Interactions of Ultraviolet Light with Wool Fiber Surfaces

โœ Scribed by R.H. Bradley; I. Mathieson

Book ID
102581450
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
120 KB
Volume
194
Category
Article
ISSN
0021-9797

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โœฆ Synopsis

The surface compositions, chemistry, and wettability of wool fiber fabrics in both native and UV-exposed states have been investigated. X-ray photoelectron spectroscopy shows surface oxygen levels of 10-12 at.% for native wool, which increase to as much as 27.5 at.% on UV exposure. Investigation of C1s and S2p photoelectron line energies shows this increase to be due largely to oxidative cleavage of native disulfide bonds to form sulfonic acid groups together with some formation of COOH/COOR on the wool fiber surfaces. A quantitative relationship is demonstrated between surface chemical states and water wettability. Copyright 1997 Academic Press. Copyright 1997Academic Press

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โœ Giuliano Freddi; Masuhiro Tsukada; Hideki Shiozaki ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 147 KB ๐Ÿ‘ 2 views

Wool fibers were chemically modified by reaction with succinic and glutaric anhydrides. The weight gain (and acyl content) increased with increasing the reaction temperature (65-80ยฐC) and time (1-2 h), attaining 18.9% (158.9 mol/10 5 g) and 23% (163.9 mol/10 5 g) for succinylated and glutarylated wo