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Carboxymethyl guar: Its synthesis and macromolecular characterization
Author(s) -
Pal Sagar
Publication year - 2008
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.29338
Subject(s) - guar gum , guar , sodium hydroxide , fourier transform infrared spectroscopy , macromolecule , chemistry , thermal analysis , polymer chemistry , intrinsic viscosity , elemental analysis , nuclear chemistry , chemical engineering , materials science , polymer , organic chemistry , thermal , biochemistry , thermodynamics , physics , engineering
Abstract Guar gum was partially carboxymethylated by the reaction of the base polysaccharide with the sodium salt of monochloroacetic acid in presence of sodium hydroxide. The resulting products (carboxymethyl guar with different degrees of substitution) were characterized by a variety of material characterization techniques, such as intrinsic viscosity measurement, determination of molecular weight, elemental analysis, thermal analysis, 13 C‐NMR spectra, and Fourier transform infrared analysis. Various grades of carboxymethyl guar gum, which were synthesized in the laboratory, were studied for their suitability as flocculants and viscosifiers. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009