Mathematical properties of polydisperse systems, 4. Calculation of molecular weight distribution from light scattering on gaussian polymer coils. Purely numerical inversion methods
作者:
Georg S. Greschner,
期刊:
Die Makromolekulare Chemie
(WILEY Available online 1982)
卷期:
Volume 183,
issue 5
页码: 1319-1331
ISSN:0025-116X
年代: 1982
DOI:10.1002/macp.1982.021830525
出版商: Hüthig&Wepf Verlag
数据来源: WILEY
摘要:
AbstractThe molecular weight distribution (MWD) of a high polymer is calculated from a weakly perturbed Zimm‐plot of the classical light scattering on dilute solutions of Gaussian polymer coils (theta state). A typical Zimm‐plot is simulated corresponding to the measurements of high accuracy as would be obtained by using the laser photometer described by Hack and Meyerhoff. The accuracy as published by these authors for small dissymmetries is used. Two inversion procedures are described in detail and tested, both of them avoiding the use of an empirical formula for the Laplace image of the calculated MWD. A complete numerical analysis of the results is given. The results are compared with those of the previous pa
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