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Study of Solutions of Heterocyclic Para-Copolyamide

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Fibre Chemistry Aims and scope

Abstract

Polycondensation copolyamide solutions are homogeneous systems according to spectroturbidimetric evaluation. Solutions of reprecipitated copolyamide are heterogeneous. The heterogeneity could be caused by relatively strong supramolecular formations that are not decomposed by the solvent. The use of turbidimetric titration curves for assessing the molecular-weight distribution of copolyamide is problematic, since irregular distribution of the units, the acidity of the medium, and primary structure formation, together with the molecular weight, can affect separation of copolyamide from a solution of the copolymer by the precipitant. The extreme character of the dependence of the intrinsic viscosity of copolyamide on the acidity of the solution suggests that in certain conditions, the copolyamide can exhibit polyelectrolytic properties.

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Authors and Affiliations

  1. All-Russian Scientific-Research Institute of Polymer Fibres, Mytishchi

    V. N. Smirnova, M. M. Iovleva, V. N. Kiya-Oglu & G. A. Budnitskii

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  1. V. N. Smirnova
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  2. M. M. Iovleva
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  3. V. N. Kiya-Oglu
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  4. G. A. Budnitskii
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Smirnova, V.N., Iovleva, M.M., Kiya-Oglu, V.N. et al. Study of Solutions of Heterocyclic Para-Copolyamide. Fibre Chemistry 34, 418–421 (2002). https://doi.org/10.1023/A:1022908124435

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  • DOI: https://doi.org/10.1023/A:1022908124435

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