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Contribution to the modeling of predepolymerization of polystyrene
Author(s) -
Swistek M.,
Nguyen G.,
Nicole D.
Publication year - 1996
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19960606)60:10<1637::aid-app16>3.0.co;2-1
Subject(s) - tetralin , polystyrene , dispersity , gel permeation chromatography , solvent , chemistry , macromolecule , intramolecular force , intermolecular force , polymer chemistry , pyrolysis , radical , organic chemistry , polymer , molecule , biochemistry
To optimize the experimental conditions for the recycling of plastic wastes, we modeled the thermal degradation process of a standard polystyrene, having a low polydispersity index. The number of initial ruptures, N o , in the macromolecular chain during the pyrolysis at 350°C under nitrogen pressure is determined from the gel permeation chromatography results from the experiments with tetralin as the hydrogen donor solvent, assuming that all radicals have been stabilized by this solvent. The calculation shows that there are 23 depropagation reactions, 40 intramolecular transfers, and for n intermolecular transfers, n – 2 recombinations, and N o – n + 2 dismutations. © 1996 John Wiley & Sons, Inc.