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Optothermal properties of fibers .7. Optical investigation of annealed nylon-6 fibers
Faculty
Science
Year:
1997
Type of Publication:
Article
Pages:
1293-1306
Authors:
Fouda, IM, Metawe, FM, Hosny, HM, Easawi, KH, ElTonsy, MM
Journal:
JOURNAL OF APPLIED POLYMER SCIENCE JOHN WILEY \& SONS INC
Volume:
65
Research Area:
Polymer Science
ISSN
ISI:A1997XN89200007
Keywords :
Optothermal properties , fibers , Optical investigation , annealed
Abstract:
The influence of annealing on the birefringence of nylon-6 fibers was examined. These fibers were found to show considerable optical anisotropy. Three independent techniques were used to study the optical anisotropy in these fibers. The first technique to determine the diameter of the fiber from the diffraction pattern was using a He-Ne laser beam. The second technique was the application of the Becke-line technique to study the effect of annealing on the skin layer of these fibers at different temperatures for a constant time of 5 h. The third is the application of a double-refracting interference microscope (the Pluta polarizing interference microscope). The double-beam technique is considered as the most suitable technique for determining the mean refractive indices and the double refraction of the annealed samples at different temperatures. (155 and 175 degrees C and at two constant times 7 and 9 h). Microinterferograms and curves are given for illustration. (C) 1997 John Wiley \& Sons, Inc.
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