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The availability of hydroxyl groups in native and mercerized cotton celluloses
Author(s) -
Bose J. L.,
Roberts E. J.,
Rowland S. P.
Publication year - 1971
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.1971.070151209
Subject(s) - reagent , hydrolysis , chemistry , amylose , polymer chemistry , mathematics , organic chemistry , starch
The accessibilities of the hydroxyl groups of the D ‐glucopyranosyl units of slack mercerized grey yarn and of the same yarn restretched to its original length are compared with those of the original grey yarn, a purified printcloth, and a hydrocellulose. The study involved reactions of the celluloses with N,N‐diethylaziridinium chloride under conditions which ensure minimum conversion of the reagent by hydrolysis to 2‐hydroxyethyldiethylamine. Amylose was taken as a reference material in which the hydroxyl groups are assumed to be completely accessible. Selective accessibilities of the hydroxyl groups at C‐6 and C‐3 relative to those at C‐2 were determined with the same reagent by a method whose development has been described earlier. The results of this study are expressed as fractions of the hydroxyl groups at C‐2, C‐3, and C‐6 that are accessible to the reagent.