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Swelling of cotton fibers in ethylenediamine–morpholine mixtures
Author(s) -
Lokhande H. T.,
Sirmour S. G.,
Shukla S. R.,
Sinha S. B.,
Patil N. B.,
Chidambareswaran P. K.
Publication year - 1984
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.1984.070290716
Subject(s) - cellulose , crystallinity , morpholine , ethylenediamine , anhydrous , swelling , polymer chemistry , chemistry , materials science , nuclear chemistry , organic chemistry , chemical engineering , composite material , engineering
Cotton fibers were treated with anhydrous mixtures of ethylenediamine and morpholine of varying proportions to study the changes in accessibility (X‐ray crystallinity index, swelling by propanol‐2 retention, formylaiton, and dyeability) as well as lattice conversions from cellulose I to cellulose II and cellulose III. Positive synergistic influence of the highest order was noticed at 70:30 (molar proportion 3:1) ethylenediamine–morpholine mixture as judged from accessibility and lattice conversion from cellulose I to cellulose II. The same critical proportion was found to give the highest order of negative synergistic effect in the lattice conversion of cellulose I into cellulose III. These opposing trends have been explained on the basis of the different mechanisms associated with the lattice conversions of cellulose I into cellulose II and cellulose III.