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Reaction of formaldehyde with cellulose in the presence of sulfuric acid
Author(s) -
Nabar G. M.,
Shenai V. A.,
Shenai V. A.
Publication year - 1972
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.1972.070160610
Subject(s) - sulfuric acid , formaldehyde , cellulose , swelling , fiber , chemistry , polymer chemistry , reaction conditions , materials science , organic chemistry , composite material , catalysis
The extent and rate of reaction between cotton yarn before and after slack mercerization and slack mercerization followed by stretching and formaldehyde, in the presence of various amounts of sulfuric acid (5–60% by weight) were studied. Beyond a concentration of 45% sulfuric acid, the reaction takes place very rapidly, and an explanation is put forward in terms of the extent of swelling of the fiber in sulfuric acid solutions. The reaction was also studied in the presence of glycerin, when the combined formaldehyde value is shown to decrease with an increasing concentration of glycerin.