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Viscosity of guar gum and xanthan/guar gum mixture solutions

Journal of the Science of Food and Agriculture, 2000
The viscosity of diluted guar gum solutions and the viscosity of xanthan and guar gum mixture solutions have been studied. Guar gum solutions showed pseudoplastic behaviour. Apparent viscosity increased with gum concentration and decreased with the temperature at which viscosity was measured.
José A Casas   +2 more
exaly   +2 more sources

Crosslinking of Guar and Guar Derivatives

SPE Journal, 2004
SummaryCrosslinking of guar and guar derivatives has played a major role in improving stimulation of oil and gas wells. While crosslinking has been used for a number of years, many facets of crosslinked systems are still not well understood. Part of the problem is that the traditional methods of determining the properties of crosslinked fluids work ...
Lei Cuiyue, P.E. Clark
openaire   +1 more source

Enzymatic Degradation of Guar and Substituted Guar Galactomannans

Biomacromolecules, 2000
Enzymatic degradation of guar galactomannan is studied using gel permeation chromatography (GPC) and steady shear viscometry. In very dilute polymer solutions, reaction rate increases with first-order kinetics with substrate concentration. In the intermediate concentration regime, the enzyme/polymer binding saturates, and the degradation kinetics is ...
Y, Cheng, R K, Prud'homme
openaire   +2 more sources

A REVIEW ON DERIVATIZATION OF GUAR AND STUDY OF PHARMACEUTICAL APPLICATIONS OF GUAR DERIVATIVES

INDIAN DRUGS, 2014
Guar gum is a naturally occurring alternating co-polymer derived from the seeds of Cyamopsis tetragonoloba. Guar has high intrinsic viscosity but very poor interaction coefficient. Guar dispersions lose viscosity upon standing. Guar has been derivatized to hydroxyalkyl, alkali carboxyalkyl and quaternary ammonium guar.
N.G.N Swamy   +3 more
openaire   +1 more source

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