Studies on microwave-irradiated kopak cotton fibers (Bombax ceiba): Using SAXS technique

Annadurai, V. and Urs, G. and Somashekar, R. (2014) Studies on microwave-irradiated kopak cotton fibers (Bombax ceiba): Using SAXS technique. Composite Interfaces, 21 (2). pp. 87-94. ISSN 0927-6440

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Microwave energy at a frequency of 2450 MHz was used to irradiate Bombax ceiba cotton (kopak fibers) samples for different intervals of time. These samples were studied using small angle X-ray scattering (SAXS) method which gives information about the structure of the fiber on a scale of about 700à . Using this method, variation in scattered intensity with angles from 0.3°to 2.5°has been measured for the fibers of cotton with and without microwave irradiation and compared with that predicted by the linear paracrystalline model. In these samples, exponential distribution of phase lengths of the measured and predicted scattering is in good agreement with each other except for a very small range of angles on the low-angle side of the peak intensity. The method enabled quantitative parameters describing morphology of the two phases, amorphous and crystalline, consistent with the SAXS intensity distribution. For a given type of distribution function, five parameters describing the model were chosen on a stepping procedure so that the final parameters give the best fit between the calculated distribution from the model and that observed experimentally. This was done by minimizing the statistical goodness-of-fit parameter chi-square. It is observed that there are significant changes in the distribution of phase lengths due to microwave irradiation of fibers. © 2013 Taylor & Francis.

Item Type: Article
Uncontrolled Keywords: Irradiation, Distribution functions, X ray scattering, Models, Radiation, Fibers, Scattering, Small angle X-ray scattering, Microwave irradiation, Bombax ceiba, Cotton, Exponential distributions, Intensity distribution, Microwave energies, Microwaves, phase lengths, Phase lengths Introduction, Quantitative parameters, Samples, SAXS, Scattered intensity
Subjects: D Physical Science > Physics
Divisions: Department of > Physics
Depositing User: Arshiya Kousar
Date Deposited: 13 Jun 2019 10:41
Last Modified: 13 Jun 2019 10:41

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