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A New Model for the Evolution of the Molecular Weight Distribution of Polymers During Ultrasonic Chain Scission
Author(s) -
Giz A. T.,
ÇatalgilGiz H. H.,
Sunar M.
Publication year - 2001
Publication title -
macromolecular theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 56
eISSN - 1521-3919
pISSN - 1022-1344
DOI - 10.1002/1521-3919(20010201)10:2<117::aid-mats117>3.0.co;2-e
Subject(s) - polymer , molar mass distribution , gel permeation chromatography , chain scission , bond cleavage , solvent , chemistry , distribution (mathematics) , polymer chemistry , permeation , materials science , thermodynamics , organic chemistry , physics , mathematics , catalysis , mathematical analysis , biochemistry , membrane
A new model for ultrasonic scission of polymer chains has been developed. The model takes the coiled nature of the polymer chains into consideration. The time evolution of the molecular weight distribution for several values of the solvent quality parameter is obtained using the new model. It is seen that the model leads to higher scission rates and lower final molecular weights for better solvents in accord with the experiments. Simulated gel permeation chromatography results are also in line with the experiments.