The influence of the solvent system used during manufacturing of CMC

The influence of the solvent system used during the CMC manufacturing on the characteristics of CMC in different solutions was studied by producing CMC in ethanol, isopropanol or a mixture thereof. This paper shows that the solvent system used has an impact on the substituent pattern and this is esp...

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Bibliographic Details
Published in:Cellulose (London) 2006-12, Vol.13 (6), p.705-712
Main Authors: Stigsson, Veronica, Kloow, Göran, Germgård, Ulf
Format: Article
Language:English
Subjects:
Ethanol
Isopropanol
Solvents
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Summary:The influence of the solvent system used during the CMC manufacturing on the characteristics of CMC in different solutions was studied by producing CMC in ethanol, isopropanol or a mixture thereof. This paper shows that the solvent system used has an impact on the substituent pattern and this is especially the case during the mercerisation. When isopropanol is used in comparison with ethanol the distribution of the substituents along the cellulose backbone becomes more uneven and the amount of tri-substituted glucose units increases as well as the number the amount of substituents on the C-6 position. This affects the behaviour of CMC when dissolved in different electrolyte solutions.
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-006-9083-y