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Accession number;99A0711821
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| Title;Surface tension and boiling point of fluoroalkanes. |
| Author;
SAKKA TETSUO
(Kyoto Univ.)
OGATA YUKIO
(Kyoto Univ.)
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Journal Title;Fusso Kagaku Toronkai Koen Yoshishu
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Journal Code:F0135B
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ISSN:
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VOL.22nd;NO.;PAGE.20-21(1998)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;In the present study we reexamined the parachor of fluoroalkanes, which is used to estimate the surface tension. The parachor is defined by using surface tension, molecular weight, and density. It has been known that the parachor shows an additivity rule, which means that a parachor value can be assigned to each part of the molecular parachor. By plotting the parachor obtained from the experimental data vs. that obtained by adding up the atomic parachor values which has been accepted for long, it is shown that some polyfluorinated alkanes show much smaller values than expected from the atomic parachor values. This is due to very low surface tension of these compounds. It can be also shown that calculated parachor of monofluorinated alkanes gives a good value. This means that polyfluorination is essential for obtaining very low surface tension. We will try to discuss this results from the point of view of intermolecular interaction in the bulk and on the surface. (author abst.) |
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