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Title: DTA and IR Studies on Cellobiose Treated with Phosphorus Oxychloride-N, N-Dimethylformamide Mixture
Authors: Bhatnagar, Satish
Agnish, S L
Bhatnagar, Hari L
Issue Date: Mar-1981
Publisher: NISCAIR-CSIR, India
Abstract: Phosphorylation of cellobiose, a basic unit of cellulose, was carried out in a mixture of N, N-dimethylformamide and phosphorus oxychloride at different temperatures in the range 40-80°C and the products of the reaction were subjected to DTA studies. The thermograrns show an endothermic activity in the region 170-230°C in air. The single endotherm at 200°C in air has been found to be shifted to 180°C in nitrogen atmosphere. This lowering of the peak temperature is attributed to the effect of synergism of nitrogen gas in combination with phosphorus present in the phosphorylated products of cellobiose. The IR spectra of the residues, obtained after partial or complete charring of the phosphorylated products in the vicinity of 180°C, together with elemental analyses provide evidence of dehydration attributable to O - H and C - H stretching in the region 3400-2880 cm-1.
Page(s): 37-39
ISSN: 0975-1025 (Online); 0971-0426 (Print)
Appears in Collections:IJFTR Vol.06(1) [March 1981]

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