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Dissolution mechanism of cellulose in SO 2 –amine–dimethylsulfoxide
Author(s) -
Isogai Akira,
Ishizu Atsushi,
Nakano Junzo
Publication year - 1987
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1987.070330419
Subject(s) - diethylamine , amine gas treating , cellulose , triethylamine , dissolution , chemistry , methanol , organic chemistry , polymer chemistry
The dissolution mechanism of cellulose in SO 2 –amine–dimethylsulfoxide systems was studied by using 1 H‐ and 13 C‐NMR spectroscopy. SO 2 and amine (diethylamine or triethylamine) were found to form a complex in DMSO, and the SO 2 –amine complex, in turn, reacts with an alcoholic hydroxyl group of methanol to produce a new complex. In the case of cellulose, it was proved that all hydroxyl groups in cellulose react with the SO 2 –amine complexes and form the same complexes in the solution state as those formed in methanol.