PHASE STATE AND RHEOLOGICAL PROPERTIES OF SOLUTIONS OF POLYAMIDE BENZIMIDAZOLE IN DIMETHYLACETAMIDE

Abstract

The article explores solutions poliamidbenzimidazole used to obtain highstrength heat-resistant fibers and reinforced plastics produced by using precipitants. Investigated rheological properties 5% of the reaction mixtures and solutions poliamidbenzimidazole with polysulfone in DMAА with addition of 3% LiCl, to improve solubility of the polymer. Is constructed part of the phase diagram corresponding to the investigated area of concentration. Shown that viscosimetric and optical methods clearly indicate the existence of a thermodynamic transition in the system poliamidbenzimidazole-DMAА. Also were investigated viscosity properties of mixtures of the solutions poliamidbenzimidazole with PSF in DMAА at different temperatures.

References

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