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Polymerization of phenylacetylene with WOCl 4 /tetraphenyltin catalyst in benzene/1,4‐dioxane. Synthesis of high‐molecular‐weight poly(phenylacetylene)
Author(s) -
Sedláček Jan,
Pacovská Marta,
Vohlídal Jiří,
GrubišićGallot Zlatka,
Žigon Majda
Publication year - 1995
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1995.021960526
Subject(s) - phenylacetylene , benzene , polymerization , polymer chemistry , tetrahydrofuran , monomer , catalysis , chemistry , solvent , molar mass distribution , polymer , size exclusion chromatography , nuclear chemistry , organic chemistry , enzyme
Phenylacetylene was polymerized with WOCl 4 /tetraphenyltin (mole ratio 1:2) catalyst in benzene and benzene/1,4‐dioxane mixtures. The resulting polymers were characterized by means of multidetector size‐exclusion chromatography and 1 H NMR and IR spectroscopy. 1,4‐Dioxane used as a co‐solvent was found to increase both the content of cis units and the molecular weight of poly(phenylacetylene) (PPhA); a weight‐average molecular weight of M̄ w = 1 · 10 6 was reached. In spite of the high mole ration monomer: catalyst (1260:1) used in the polymerizations high yields of PPhA were attained. No effect of an alteration in PPhA microstructure upon its degradation in tetrahydrofuran solution exposed to air has been observed.