Accession Number : AD0714980

Title :   Particle Scattering Factor and Segment-Segment Distance Distribution of Macromolecules in Solution,

Corporate Author : KONINKLIJKE/SHELL-LABORATORIUM AMSTERDAM (NETHERLANDS)

Personal Author(s) : Mijnlieff,P. F. ; Coumou,D. J. ; Meisner,J.

Report Date : 02 FEB 1970

Pagination or Media Count : 14

Abstract : The angular dependence of light scattering from solutions of three samples of poly-alpha-methylstyrene in various solvents has been measured over a wide range of scattering angles. For molecules with a radius of gyration larger than about 500 A, differences (Delta P) are found between the actual angular dependence (P) and the one (P(id)) predicted--with Debye's equation--for ideal Gaussian coils. By subjecting the measured data to a statistical analysis, a quantitative description of Delta P was attained. The quantities Delta P contain information about the function Delta W(r), which is the difference between W(r) and W(id)(r); the function W(r) is the actual distribution function for the distances between the segments in a polymer coil, whereas W(id)(r) is the one that follows from random-flight statistics, underlying the ideal Gaussian coil model. (Author)

Descriptors :   (*POLYMERS, SCATTERING), LIGHT, SOLUTIONS(MIXTURES), MOLECULAR STRUCTURE, MATHEMATICAL ANALYSIS, NETHERLANDS

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE