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Molecular characteristics and solution behavior of prepolymers of several polyimides: Effect of synthesis conditions

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Abstract

With the use of light scattering and viscometry, as well as the employment of various aprotic solvents for the polymer synthesis, the molecular characteristics of two poly(amic acids), namely, poly[4,4′-bis(4″-N-phenoxy)diphenylsulfone]amic acid of 1,3-bis(3′,4-dicarboxyphenoxy)benzene and poly[4,4′-bis(4″-N-phenoxy)diphenyl]amic acid of 1,3-bis(3′,4-dicarboxyphenoxy)benzene, have been studied at various molar ratios of the starting reagents and concentrations of the polycondensation solution. The molecular masses of poly(amic acids) depend on the thermodynamic quality of a solvent which may be changed by varying the nature of the solvent, the structure of the resulting polymer, or the chemical nature of the mixture.

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Original Russian Text © I.G. Silinskaya, V.M. Svetlichnyi, N.A. Kalinina, A.L. Didenko, A.P. Filippov, V.V. Kudryavtsev, 2006, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2006, Vol. 48, No. 8, pp. 1383–1390.

This work was supported by the Russian Foundation for Basic Research (project nos. 04-03-32470 and 05-03-33194) and the President Foundation (project NSh-1824.2003).

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Silinskaya, I.G., Svetlichnyi, V.M., Kalinina, N.A. et al. Molecular characteristics and solution behavior of prepolymers of several polyimides: Effect of synthesis conditions. Polym. Sci. Ser. A 48, 787–792 (2006). https://doi.org/10.1134/S0965545X06080037

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  • DOI: https://doi.org/10.1134/S0965545X06080037

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