Rheology of a cellulose graft copolymer. Comparison with other closely packed gel thickeners | Zendy

Taylor N. W. | Zendy; Bagley E. B. | Zendy

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Rheology of a cellulose graft copolymer. Comparison with other closely packed gel thickeners

Author(s) -

Taylor N. W.,

Bagley E. B.

Publication year - 1977

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.1977.070210616

Subject(s) - rheology , copolymer , polyelectrolyte , materials science , polymer chemistry , viscosity , swelling , suspension (topology) , cellulose , chemical engineering , ionic strength , volume fraction , polymer , chemistry , composite material , aqueous solution , organic chemistry , mathematics , homotopy , pure mathematics , engineering

Hydrolyzed cellulose–polyacrylonitrile graft copolymer is a polyelectrolyte gel suspension with a high viscosity in water. It is a closely packed swollen gel particle suspension in the appropriate concentration range and has similar rheological properties to other thickeners of this type. Viscosities η in either water or salt solution are reduced to a single master curve by use of the reduced viscosity function η/ cQ , where c is weight fraction of polymer and Q is swelling volume in excess solvent of the same ionic strength. The effective molecular weight between crosslinks, M c , determined from shear modulus, corresponds to M c values for other closely packed gel thickners of similar η/ cQ . Among all examples of this class of thickener, the plateau values of η/ cQ , which occur at cQ > 2, are approximately inversely proportional to M c .

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