论文信息 - Non‐newtonian flow of dilute polymer solutions: III. Sodium carboxy methyl cellulose in solutions of sodium chloride)

Non‐newtonian flow of dilute polymer solutions: III. Sodium carboxy methyl cellulose in solutions of sodium chloride)

A direct and straightforward method is used to derive the influence? of the shearing stress on the intrinsic viscosity from the experimental data without introducing empirical or semi-empirical relations. It can be shown that the method of plotting (t – t0)/t0c where t is the flow time and c the concentration. is in error. The application to carboxy methyl cellulose in dilute salt solutions reveals a pronounced effect of small shear rates on the intrinsic viscosity. On comparing with existing hydrodynamic theories it is found that even the fully extended length of the polymer molecule would be too small to explain the results.

J. Hermans | D. Pals | F. Akkerman

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