ISSN:
1434-4475
Keywords:
Concentration dependence of viscosity
;
Polyacrylonitrile solutions
;
Temperature dependence of viscosity
;
Viscosity
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Viscosity measurements were carried out with polyacrylonitrile dissolved in dimethylformamide up to 0.36 g/ml. The temperature range was 20°C to 130°C, the highest shear gradient applied, 5.6·103s−1. The temperature variation of viscosity is reproduced with sufficient accuracy by the equation ν=k·exp (Q/RT). Bothk andQ increase as concentration increases, and the viscosity increases withc 1.12 toc 6.4 Inverse proportionality appears to exist between concentration and the longest relaxation time.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00909661
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