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- W2012126746 abstract "The polymerization of phenylacetylene initiated by ferric acetylacetonate and triethylaluminum was studied over the temperature range −30°−70°, in bulk as well as in the presence of diluents, and over a range of catalyst compositions and concentrations. The product consisted of four major fractions: crystalline polymer of molecular weight about 7000 and a very narrow molecular-weight distribution (MWD), (fraction I); somewhat lower-molecular-weight amorphous polymer with a broader MWD (fraction II); linear oligomer (fraction III); and the asymmetric cyclic triphenyl-benzene (fraction IV). The average degree of polymerization, of fraction I (65–70) is independent of all polymerization variables, that is, temperature from −30° to 70°C, the presence or absence of diluent (tetralin or benzene), and catalyst concentration and composition. The MWD is narrow with Mw/Mn equal to 1.05 or less. The results suggest that thermodynamic rather than kinetic factors limit the size of the polymer. A possible mechanism is proposed." @default.
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- W2012126746 date "2007-03-08" @default.
- W2012126746 modified "2023-10-17" @default.
- W2012126746 title "The polymerization of phenylacetylene in the presence of ferric acetylacetonate and triethylaluminum" @default.
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- W2012126746 doi "https://doi.org/10.1002/polc.5070650108" @default.
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