| Autor: |
Kwatra, Bimla, Ramakrishna, Venketachari, Suri, Sushil Krishan |
| Zdroj: |
Bulletin of the Chemical Society of Japan; October 1981, Vol. 54 Issue: 10 p3173-3177, 5p |
| Abstrakt: |
The viscosities and densities of trans-stilbene, N-benzylideneaniline (BA) and N-benzylidene-p-toluidene (BT) melts at various temperatures near their respective melting temperatures have been determined. In all the cases, a precursor behaviour in crystal phase at temperatures below the melting temperature has been observed. The viscosity vs.temperature relationships have been discussed in two parts: one in the liquid state and the other in the supercooled region. The values of energy and entropy of viscous flow are indicative of molecular association in BA and BT. The enhanced viscosity in the supercooled region has been attributed to the cluster formation. The hinderance to molecular rotation, as a factor influencing viscosity can not be ruled out. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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