Rate of recovery of long periodicity in stretched muscle specimen using SAXS data

Annadurai, V. and Sangappa and Somashekar, R. (2004) Rate of recovery of long periodicity in stretched muscle specimen using SAXS data. Journal of Polymer Materials, 21 (4). pp. 439-444. ISSN 0973-8622

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An expression for scattered X-ray intensity from one-dimensional Hosemann's linear paracrystalline model consisting of alternate crystalline and amorphous regions has been reduced to easily computational form by employing exponential distribution function here. We have used this theoretical approach to analyse the Iwamoto et al's SAXS data of stretched frog muscle fibers obtained at every millisec from the released state and hence to compute the long periodicity of myosin along with the rate of recovery of this muscle fiber for the first time. We also find that the changes are linear in nature. The width of the crystalline phase length distribution does not vary with the released time indicating the changes are within the layer wherein the chain unfolds at the rate of 1.15 angstrom/ms in myosin fibers. Fraction of amorphous component which we have computed on the basis of paracrystalline model has been reported. The parameters which are related to nucleation growth rates, growth geometry and type of nucleation have been computed using Avrami equation. These results have been compared with the values observed for polymers.

Item Type: Article
Uncontrolled Keywords: myosin fiber; SAXS; long periodicity; Hosemann's paracrystalline model
Subjects: D Physical Science > Physics
Divisions: Department of > Physics
Depositing User: lpa venkatesh user
Date Deposited: 04 Sep 2019 12:19
Last Modified: 04 Sep 2019 12:19
URI: http://eprints.uni-mysore.ac.in/id/eprint/6515

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