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|Title:||DTA and IR Studies on Cellulose-POCl3-Pyridine Systems*|
|Authors:||Gupta, Jagdish Chandra|
Bhatnagar, Hari L
|Abstract:||Phosphorylation and chlorination of cellulose with phosphoryl chloride in pyridine solvent were carried out in the temperature range 40-100°C for 24 hr and the thermal properties of the treated cellulose were evaluated by the DTA technique. The DTA curves of the products formed showed a single exothermic peak at 200°C, which can be attributed to the formation of a new bond. The thermograms of the treated cellulose had more sharp and well defined peaks in nitrogen atmosphere than in air atmosphere. Infrared spectra of some residues obtained by partially or completely charring some selected samples near the DTA peak temperatures gave indication of dehydration and skeletal rearrangement, as the absorption due to the hydroxyl stretching around 3400 cm-1 and aliphatic C-H stretching at 2900 cm-1 decreased.|
|ISSN:||0975-1025 (Online); 0971-0426 (Print)|
|Appears in Collections:||IJFTR Vol.04(1) [March 1979]|
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