## Abstract The synthesis of two polysaccharideβbased graft copolymers with acrylamide, guar gum grafted polyacrylamide (GGβ__g__βPAM) and hydroxypropyl guar gum grafted polyacrylamide (HPGβ__g__βPAM) is described. The graft copolymers have been characterized by viscometry, infrared spectroscopy an
Selective oxidation and determination of the substitution pattern of hydroxypropyl guar gum
β Scribed by Xiaoyan Wu; Yingqing Ye; Yannan Chen; Bin Ding; Junjie Cui; Bo Jiang
- Book ID
- 108079823
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 407 KB
- Volume
- 80
- Category
- Article
- ISSN
- 0144-8617
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The aqueous solutions of guar gum and its hydroxypropyl (HP) and sodium carboxymethyl (sod CM) derivatives are pseudoplastic, and the transition from Newtonian t o pseudoplastic occurs in the low-shear-rate range a t the concentrations of interest to industries. The flow properties of these polysacc
A method is described for locating the 0-(2-hydroxypropyl) groups in 0-(2hydroxypropyl)-substituted guar. Per-0-methylation of the O-(Zhydroxypropyl)guar yielded guar that was partially 0-methylated and partially 0-(2methoxypropyl)ated. This polymer was hydrolyzed, to afford a mixture of partially