Solution properties of poly(methacrylamide) |
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Authors: | L.V. Titkova E. Prokopová B. Sedláček V. Petrus K. Dušek M. Bohdanecký |
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Affiliation: | Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, 162 06 Prague 6, Czechoslovakia |
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Abstract: | Poly(methacrylamide) samples obtained by radical polymerization were fractionated by isothermal precipitation (formamide-methanol). Molecular weights were determined by light scattering and the Archibald approach-to-equilibrium method (in 0.4 M aqueous magnesium perchlorate), and the [η] M correlation was constructed. The characteristic ratio (C1 = 6.1). Its temperature coefficient (dln C1 dT ? 0) and the interaction parameters of the polymer in aqueous solutions of urea (2–8 M) and magnesium perchlorate (0.4–1.2 M) at 10–50°C were determined using analysis of the viscometric data ([η], dln [η]/dT). The data thus obtained are used to discuss the behaviour of the polymer in water. |
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