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Cellulose sodium carboxymethyl

Sodium carboxymethyl cellulose [9004-32-4] (CMC) and hydroxyethyl cellulose [9004-62-0] (HEC) are the ceUulosics most widely used in drilling fluids (43). CMC is manufactured by carboxymethylation of cellulose which changes the water-insoluble cellulose into the water-soluble CMC (44). Hydroxyethyl cellulose and carboxymethyl hydroxyethyl cellulose (CMHEC) are made by a similar process. The viscosity grade of the material is determined by the degree of substitution and the molecular weight of the finished product. [Pg.179]

The main polymers used as thickeners are modified celluloses and poly(acrylic acid). Several different modified celluloses are available, including methyl-, hydroxypropyl methyl-, and sodium carboxymethyl-cellulose and their properties vary according to the number and distribution of the substituents and according to relative molar mass of the parent cellulose. Hence a range of materials is available, some of which dissolve more readily than others, and which provide a wide spread of possible solution viscosities. Poly(acrylic acid) is also used as a thickener, and is also available in a range of relative molar masses which give rise to give solutions of different viscosities. [Pg.77]

Sodium carboxymethyl cellulose Poly(vinyl pryidine)... [Pg.22]

Sodium carboxymethyl cellulose (SS) Sodium cellulose sulfate (SS)... [Pg.498]

Fructose alone 2, fructose plus 0.25 % sodium carboxymethyl cellulose (CMC). [Pg.54]

Rossi et al. [30] evaluated rheologically mucins of different origin with polyacrylic acid and sodium carboxymethyl cellulose. The same group also reported a novel rheological approach based on a stationary viscoelastic test (creep test) to describe the interaction between mucoadhesive polymers and mucins [31,32]. Jabbari et al. [33] used attenuated total-reflection infrared spectroscopy to investigate the ehain interpenetration of polyaciylic acid in the mucin interface. [Pg.177]

Cellulose disintegrants have been studied as insoluble matrices for sustained release tablets. Anionically charged carboxymethyl cellulose (sodium salt) was found to be inferior to methyl cellulose and poly(vinyl pyrollidone) as a binding agent for oxyphenbutazone tablets [291], However sodium carboxymethyl cellulose has found application as a dispersing agent for ibuprofen microspheres... [Pg.25]

The bioadhesive characteristics of tablets for oral use made from modified starch, poly(acrylic acid), polyethylene glycol) and sodium carboxymethyl cellulose were recently investigated [406]. In this work, the force and energy adhesion were determined in vitro, and maximum adhesion times were evaluated in vivo in humans [406], In the in vitro, studies, the poly(acrylic add) gave the best performance, however in vivo bioadhesion was not strongly correletated with... [Pg.34]

Dosage form Regranex Gel is a non-sterile, preserved, sodium carboxymethyl-cellulose-based topical preparation containing becaplermin. Each gram of Regranex Gel contains becaplermin 100 pg. [Pg.331]

Typical granulating liquids are gelatin or sodium carboxymethyl cellulose solutions. [Pg.368]

Nitroglycol NC - Nitrocellulose MNT - Mononitrotoluene TNT - Trinitrotoluene Carbonaceous Materials, magenta), DAmmPh(Diammonium phosphate), NaCMC (Sodium carboxymethyl cellulose), Ca sulfate, Ca stearate, Gelatin) for unsheathed cartridges and in brackets for sheathed Charge limit in ounces - no ignition of gas by a... [Pg.236]

Macromolecular chemistry covers a particularly wide field which includes natural polymeric material, such as proteins, cellulose, gums and natural rubber industrial derivatives of natural polymers, such as sodium carboxymethyl cellulose, rayon and vulcanised rubber and the purely synthetic polymers, such as polythene (polyethylene), Teflon (polytetrafluoroethylene), polystyrene, Perspex (poly (methyl... [Pg.14]

Sodium carboxymethyl cellulose improves detergent performance in washing textile fabrics, particularly cotton, by forming a protective hydrated adsorbed layer on the cleaned fabric which helps to prevent... [Pg.167]

A convenient, laboratory preparation of sodium carboxymethyl-cellulose was carried out by McLaughlin and Herbst,11 in which they obtained products with a degree of substitution as high as 2.8 they studied the reaction with respect to such variables as elapsed time, temperature, and manner of addition of the reactants. [Pg.288]


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5- -2-carboxymethyl

Binders sodium carboxymethyl cellulose

Carboxymethyl cellulose

Cellulose carboxymethylation

SODIUM CARBOXYMETHYL

SODIUM CELLULOSATE

Sodium carboxymethyl cellulose drug release

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