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Fibre formation in copolyamide — Ethylene-vinyl acetate copolymer mixtures

  • Chemistry And Technology Of Man-Made Fibres
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Fibre Chemistry Aims and scope

Conclusions

Formation of microfibres, both of the copolyamide and also of the ethylene-vinyl acetate copolymer in complementary mixtures, has been shown, which contradicts the conclusion of the Van Oene theory. Specific fibre formation depends on the degree of dispersion of the fibre-forming components; when there is a very fine dispersion, the process is not realized.

Basic features of the rheological behavior of SPA-SEVA mixture melts have been established: a sharp decrease in the viscosity of melts of mixtures as compared with the viscosity of the starting components and an anomalously large increase in elasticity (jet expansion) of the mixture melt. This is caused by the formation of SPA microfibres in an SEVA matrix and of SEVA fibres in an SPA matrix. The anomalously high values of jet expansion are connected with additional deformation of the SEVA in the SPA matrix because of strong intermolecular interaction at the interface.

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Literature cited

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Authors
  1. M. V. Tsebrenko
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  2. N. M. Rezanova
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Additional information

Translated from Khimicheskie Volokna, No. 4, pp. 14–16, July–August, 1990.

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Tsebrenko, M.V., Rezanova, N.M. Fibre formation in copolyamide — Ethylene-vinyl acetate copolymer mixtures. Fibre Chem 22, 228–231 (1991). https://doi.org/10.1007/BF00548095

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  • DOI: https://doi.org/10.1007/BF00548095

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