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Distribution of carboxyl groups in carboxymethylated cotton fibers

✍ Scribed by Judit Borsa; Vasudha Ravichandran; S. Kay Obendorf

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
140 KB
Volume
72
Category
Article
ISSN
0021-8995

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✦ Synopsis

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.

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