Polymerization of lactams, 54. Anionic polymerization of 2-pyrrolidone accelerated with CO2, part 3 |
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Authors: | Jan Roda,Ji í Bro ek,Jaroslav Kr lí
ek,Zden k Tuzar |
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Affiliation: | Jan Roda,Jiří Brožek,Jaroslav Králíček,Zdeněk Tuzar |
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Abstract: | Intrinsic viscosities in m-cresol and weight average molecular weights, M?w, were measured for samples of high molecular weight poly(2-pyrrolidone) (poly ( 1 )) prepared by anionic polymerization of 2-pyrrolidone ( 1 ) accelerated with CO2. It was proved that the earlier found relationship [η] = 4 · 10?2 · M0,77 (in cm3 · g?1) holds for M?Mw up to 8 · 105 g. mol?1. The probable reason for the formation of poly ( 1 ) with an exceptionally high molecular weight is discussed. |
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