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Distribution of carboxyl groups in carboxymethylated cotton fibers
Author(s) -
Borsa Judit,
Ravichandran Vasudha,
Obendorf S. Kay
Publication year - 1999
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/(sici)1097-4628(19990411)72:2<203::aid-app5>3.0.co;2-l
Subject(s) - cellulose , sodium hydroxide , scanning electron microscope , uranyl nitrate , fiber , cellulose fiber , nuclear chemistry , polymer chemistry , materials science , microanalysis , chemistry , chemical engineering , composite material , organic chemistry , uranium , engineering , metallurgy
Cotton cellulose was partially carboxymethylated by a one‐bath method using monochloroacetic acid and sodium hydroxide. A method was developed to study the extent of the carboxymethylation of cellulose within the cotton fibers using scanning electron microscopy (SEM) and energy‐dispersive X‐ray analysis (EDX). Uranyl nitrate was used as a stain. Scanning electron photomicrographs revealed that the carboxymethylation of cellulose occurred throughout the cotton fiber cross section. However, the X‐ray microanalysis data indicated a variation in the extent of the reaction among the morphological regions that have different chemical accessibility. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 72: 203–207, 1999