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Crystallite size and shape in Twaron fibers heat treated at different temperatures using WAXS
Author(s) -
Jain Anjana,
Abhishek S.,
Mahesh S. S.,
Somashekar R.
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.23557
Subject(s) - crystallite , materials science , composite material , thermal stability , microcrystalline , crystallography , chemical engineering , chemistry , engineering , metallurgy
We have determined the crystallite size of Twaron fibers heat treated at various temperatures by analyzing the wide angle X‐ray scattering (WAXS) data employing a profile analysis technique developed by us. This study indicates that the differential change of size with temperature is less than 1% of the mean value along both (110) and (200) directions. Hence, these fibers are thermally stable and thermal aging is negligible. We have also observed that the lattice strain variation with temperature is negligible. These studies demonstrate the thermal stability of fibers in terms of the changes in the microcrystalline parameters. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 4910–2916, 2006