FTIR AND WAXS STUDIES ON SIX VEGETAL FIBERS

Ranjitha, K. and Gayathri, G and Tomar, Ritu and Poletto, Matheus and Ornaghi Junior, Heitor Luiz and Annadurai, Venkatasamy and Somashekar, Rudrappa (2020) FTIR AND WAXS STUDIES ON SIX VEGETAL FIBERS. Cellulose Chemistry and Technology, 54 (3-4). pp. 187-197. ISSN 0576-9787

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Abstract

The microstructural parameters of various vegetal fibers and their respective native cellulose have been studied using wide angle X-ray scattering (WAXS) and FT-IR spectroscopy. The crystal imperfection parameters, such as crystal size < N >, lattice strain (g) and enthalpy (alpha*), have been determined by profile analysis using Warren's method. The results were cross-checked with those obtained by matching the stimulated intensity profile obtained from one-dimensional Hosemann's paracrystalline model. In all this computation, we have used (110) and (200) reflection observed in these varieties of vegetal fibers and their native cellulose. We have also computed volume weighted and surface weighted crystal size, and compared the values of these parameters. Details of the microstructural parameters were obtained using an analytical function considering asymmetric functions, and the variations found in crystallite shape and size were attributed to differences in the chemical composition of lignin and cellulose among the fibers.

Item Type:	Article
Uncontrolled Keywords:	vegetal fibers; cellulose; WAXS; crystal imperfection parameter; volume weighted crystal size; surface weighted crystal size; FTIR
Subjects:	D Physical Science > Physics
Divisions:	Department of > Physics
Depositing User:	Mr Umendra uom
Date Deposited:	15 Feb 2021 06:18
Last Modified:	22 Nov 2022 09:18
URI:	http://eprints.uni-mysore.ac.in/id/eprint/15617

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