Shekar, R. I. and Rao, P. M. D. and Siddaramaiah and Kumar, M. N. S. and Kotresh, T. M. and Somashekar, R. and Parameswara, P. (2011) Microcrystalline and kinetic parameters of glass-PEEK hybrid composites. JOURNAL OF COMPOSITE MATERIALS, 45 (5). pp. 549-556.
Full text not available from this repository. (Request a copy)Abstract
The cowoven hybrid fiber fabric consisting of E-glass and poly(ether ether ketone) fiber was compression-molded to obtain the hybrid composites. The effect of heat aging at different temperatures (400 degrees C and 500 degrees C) for different time intervals (1, 2, and 5 min) on the microcrystalline properties of the composites has been investigated and it was observed that heat aging for short time enhances the structure property relationships as reflected in the changes in crystal size and volume. The microcrystalline parameters such as the nanocrystal size (< Ni >), lattice disorder (g), interplanar distance (d(hkl)), width of the crystallite size distribution, and surface-weighted crystal size (D-s) were evaluated using wide angle X-ray scattering profiles. The different asymmetric column length distribution functions namely, exponential and Reinhold distribution methods were employed to probe the microcrystalline behavior of the composites and the results were compared. The kinetics of thermal degradation (using Flynn-Wall-Ozawa) revealed that, the activation energy decreased with increase in mass loss up to 15% and remains constant thereafter.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | activation energy; crystallinity; glass; hybrid composite; PEEK; TGA |
| Subjects: | D Physical Science > Physics |
| Divisions: | Department of > Physics |
| Depositing User: | Users 23 not found. |
| Date Deposited: | 21 Jun 2019 10:05 |
| Last Modified: | 21 Jun 2019 10:05 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/2551 |
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