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Effects of mixing on polymerizations in batch reactors: Comparison of catalytic and ionizing radiation initiations
Author(s) -
Chen H. T.,
Steenrod J.
Publication year - 1975
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760150507
Subject(s) - mixing (physics) , dispersity , materials science , catalysis , ionizing radiation , polymerization , decomposition , polymer , radiation , thermal decomposition , absorption (acoustics) , thermal , batch reactor , chemical engineering , polymer chemistry , irradiation , thermodynamics , chemistry , optics , composite material , organic chemistry , nuclear physics , physics , quantum mechanics , engineering
The effects of mixing on polymerizations in batch reactors are examined theoretically for initiations by thermal decomposition of catalyst and by absorption of ionizing radiation. Mathematical expressions for predicting the first three moments of the dead polymer size distribution are presented. Two extreme mixing states, perfect and no mixing, are considered. It is shown that in batch reactors mixing in any direction in which nonuniform initiations exist increases the polymerization rate and the number average molecular weight and decreases the weight average and thus the polydispersity.