Accession Number : AD0701471

Title :   CALCULATION OF CRITICAL SURFACE TENSIONS OF POLYMERS AND SURFACE TENSIONS OF LIQUIDS FROM CHEMICAL STRUCTURE ONLY.

Descriptive Note : Technical rept.,

Corporate Author : ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)

Personal Author(s) : Sewell,J. H.

Report Date : OCT 1969

Pagination or Media Count : 22

Abstract : A method of calculating critical surface tensions of polymers from their chemical structure only is described. For a set of 28 polymers, the standard deviation of the differences between calculated and observed values is 5.0 dynes/cm with a mean difference of 3.5 dynes/cm. Using additive constants for calculating molar volumes, surface tensions of 24 various liquids are predicted from the parachor. The standard deviation of the differences between calculated and observed surface tensions is 4.5 dynes/cm and the mean error is 2.9 dynes/cm. Cohesive energy is found to be a function of the reciprocal of molar volume. (Author)

Descriptors :   (*POLYMERS, INTERFACIAL TENSION), (*MOLECULAR STRUCTURE, INTERFACIAL TENSION), (*LIQUIDS, INTERFACIAL TENSION), SURFACE PROPERTIES, MATHEMATICAL ANALYSIS, GREAT BRITAIN

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE