Accession Number : AD0744919

Title :   Refractive Index Increments of Polymers in Solution: 2. Refractive Index Increments and Light-Scattering in Polydisperse Systems of Low Molecular Weight,

Corporate Author : UNIVERSITY OF WESTERN ONTARIO LONDON DEPT OF CHEMISTRY

Personal Author(s) : Lorimer,J. W. ; Jones,D. E. G.

Report Date : 03 MAY 1971

Pagination or Media Count : 8

Abstract : Theoretical equations are deduced which predict that the specific refractive index of a polymer in solution is v=v(infinity)+v(0)/M(n), where M(n) is the number average molecular weight, and v(infinity)and v(0) depend on the refractive index, n(1), of the solvent, on the specific refractivity of the pure polymer, and on the specific volume of the polymer in solution. Mixtures of two polymers whose refractive increments depend on molecular weight are also considered. Methods of distinguishing the effects of polydispersity of composition from effects due to the dependence of the average v on the average molecular weight are discussed for mixtures of components whose individual properties are unknown. (Author)

Descriptors :   (*POLYMERS, *REFRACTIVE INDEX), (*SOLUTIONS(MIXTURES), POLYMERS), LIGHT TRANSMISSION, MOLECULAR WEIGHT, MATHEMATICAL ANALYSIS, MIXTURES, CANADA

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE