| Autor: |
Pfragner, Julius, Schurz, Josef |
| Zdroj: |
Chemical Monthly / Monatshefte für Chemie; 1980, Vol. 111 Issue 5, p1053-1060, 8p |
| Abstrakt: |
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, 5.6·10s. The temperature variation of viscosity is reproduced with sufficient accuracy by the equation ν= k·exp ( Q/RT). Both k and Q increase as concentration increases, and the viscosity increases with c to c Inverse proportionality appears to exist between concentration and the longest relaxation time. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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