A. Ubbelohde, J. Burgess
1970
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0
Influential Citations
2
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Journal
Journal of The Chemical Society B: Physical Organic
Abstract
Excess volumes and viscosity–temperature parameters have been determined for binary mixtures of tetraphenylallene with pyrene. Addition of pyrene leads to a steep rise in excess volume, with a maximum at about 25 moles %. This can be correlated with a steep drop in the nominal activation energy for the temperature dependence of viscosity, which attains its lower limit for about the same compositions.Both effects are discussed in terms of a breaking down of anti-crystalline clusters of interlocked molecules of tetraphenylallene resulting from the dilution of its melt with pyrene molecules.