Viscosifiers cellulose

The viscosity of a dispersion may be increased by adding a water-soluble viscosifier. There are several types, for example, FIEC (hydroxyethyl cellulose) or acrylic viscosifiers, which are added in the form of an aqueous stock solution. To utilize their viscosifying effects fully, the pFI of the formulation must be increased to a certain optimum value, typical for a given viscosifier. 

COO" in hydrophilic group Good viscosifier, iess adsorption on sandstones due to the repuision between chain iinks, but precipitation with and Mg, iess chemicai stabiiity Sodium alginate, sodium carboxymethyl cellulose, HPAM, xanthan gum... 

Concentrated anode and cathode inks have been prepared by suspending LijTisOn and LiFeP04 in a solution composed of deionized water, ethylene glycol, glycerol, and cellulose-based viscosifiers. 

Hydroxypropylmethylcellulose (HPMC) is one of the many mixed ethers of cellulose. It is prepared by reactions of alkali cellulose with methyl chloride and propylene oxide in a slurry process. Reaction conditions may be varied to control compositions despite the greater reactivity of methyl chloride. HPMC is an extremely effective viscosifier compared to conventional cellulose ethers. Its mi-croheterogeneous nature, phase behavior, and interaction with surfactants allow use in food, pharmaceutical, and coatings applications (72,87). 

A polymeric quaternary ammonium salt of hydroxyethyl cellulose of structure shown in Fig. 30 (Polyquatemium-24) in combination with certain primary surfactants, salts, and-other viscosifying agents is used as a thickener in personal care products such as areams. 

Thickeners (viscosifiers and gelling agents] they are additives used to increase the drilling mud viscosities and gel strength at low concentrations. Among these additives are bentonite, xanthan gum, carboxymethyl cellulose, and guar gum. 

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