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Study on free radicals of cotton and wool fibers treated with low-temperature plasma

✍ Scribed by Jie-Rong Chen

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
325 KB
Volume
62
Category
Article
ISSN
0021-8995

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✦ Synopsis

SYNOPSIS

Natural fibers, such as cotton and wool, were treated with low-temperature plasmas of 02, N,, Ar, H P , CO, and CF,. The intensity of the free radicals of the plasma-treated fibers was measured using electron-spin-resonance (ESR) spectroscopy. The result indicates that the reaction of low-temperature plasmas generates free radicals in the fiber matrix. The intensity of the free radicals is related to fiber matrix, fine structure, the kinds of' plasma gases, and the condition of treatment. The thermal stability and variation with time of the free radicals were also inspected.

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The surface free energy and surface structure of poly(tetrafluoroethylene) (PTFE) film treated with low temperature plasma in O 2 , Ar, He, H 2 , NH 3 , and CH 4 gases are studied. The contact angles of the samples were measured, and the critical surface tension g c (Zisman) and g c (max) were deter