ISSN:
1022-1352
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Phenylacetylene was polymerized with WOCl4/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 1H 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 M̄w = 1 · 106 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.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1995.021960526