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Molecular‐weight determination from small‐angle scattering without absolute intensities: advantages and limitations
Author(s) -
Pleštil J.,
Pospíšil H.,
Ostanevich Yu. M.,
Degovics G.
Publication year - 1991
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889891002698
Subject(s) - scattering , small angle scattering , polymer , absolute (philosophy) , contrast (vision) , chemistry , materials science , optics , computational physics , molecular physics , physics , nuclear magnetic resonance , philosophy , epistemology
Surprisingly, molecular weight can be determined from small‐angle scattering data without using absolute intensities and the contrast factor. The formula underlying this novel procedure is illustrated by model calculations. Several examples of the successful use of the procedure applied to polymer solutions together with those where the method has failed are given.