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Title: Surface morphological, band and lattice structural studies of cellulosic fiber coir under mercerization by ESCA, IR and XRD techniques
Authors: Mahato, D N
Prasad, R N
Mathur, B K
Keywords: Electron spectroscopy;Chemical analysis;ESCA;XRD;IR;Crystallinity;Oxidation;Depolymerization;Lattice transformation
Issue Date: Sep-2009
Publisher: CSIR
Abstract:  The electron spectroscopy for chemical analysis (ESCA) studies show the increased binding energy (BE) of C1s and O1s on mercerization. The oxygen to carbon ratio increases. The cellulose I lattice structure is preserved, which is reflected in the XRD and IR spectra. These assume significance because these changes reflect in the structure-sensitive physical properties. The change in oxidation state is supported by 2929 cm-1 band. The band at 1267 cm-1 gives depolymerization. The IR band at 1433 cm-1 gives idea of restriction of lattice transformation from cellulose I into cellulose II, which is confirmed by XRD pattern. The fiber undergoes disappearance of crystallinity, depolymerization and oxidation.
Page(s): 643-647
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.47(09) [September 2009]

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