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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.47 [2009] >
IJPAP Vol.47(09) [September 2009] >
| 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) |
| Source: | IJPAP Vol.47(09) [September 2009]
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