Single‐point determination of intrinsic viscosity
1965; Wiley; Volume: 9; Issue: 4 Linguagem: Inglês
10.1002/app.1965.070090429
ISSN1097-4628
Autores Tópico(s)Thermodynamic properties of mixtures
ResumoAbstract Limitations on the use of the equations [η] = {2(η sp − ln η re1 )} 1/2 / c and [η] = (η sp + 3ln η re1 )/4 c in determining intrinsic viscosity, [η], by a single point method have been pointed out. Inclusion of higher order terms in the series expansion for ln η re1 introduces an additional term in the above equations which is negligible when the value of Huggins' constant, k ′, is in the vicinity of 0.3–0.4. More accurate values for intrinsic viscosity calculated by a single point method can be obtained using these modified equations provided k ′ can be estimated.
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