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Textile Research Journal
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Thermally-Stimulated Depolarization-Current Studies in Thermoelectrets of Cotton and Staple Viscose Rayon

P.K.C. Pillai

Department of Physics, Indian Inslitute of Technology, New Dalhi-110029, India

M. Mollah

Department of Physics, Indian Inslitute of Technology, New Dalhi-110029, India

Results of thermally-stimulated discharge currents from polarized cotton and viscose rayon, for different polarizing conditions, have been given. Definite evidence of field-induced polarization has been found. Depolarization kinetics data—viz. activation energy, relaxation time, etc.—for the process responsible for polarization or depolarization have been presented. Glass-transition temperatures of dry cotton cellulose and viscose rayon were found to be ~305°C and ~310°C, respectively. Cotton cellulose does not degrade even at 350°C, whereas degradation in viscose rayon starts at ~340°C.

Textile Research Journal, Vol. 49, No. 11, 647-651 (1979)
DOI: 10.1177/004051757904901105
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