Stability of Blends of Polyether Sulfone With Thermotropic Liquid Crystalline Polymers

Published

January 1, 2000

Author(s)

F Qiao, Kalman D. Migler, Charles C. Han

Abstract

The formation and stability of various liquid crystalline polymers in PES matrix has been studied by in-line optical and light scattering microscopy. The fiber breakup morphology after shear cessation was examined to study the stability of theTLCP fibers. Shear-induces droplet-fiber transition and strong variation in critical shear rate have been discovered, the fibers are highly unstable and can break up in a few seconds which are strongly dependent on blends pairs and specific shear field. The fibers breakup into droplets by the combination of Rayleigh distortions, end pinching and retraction. The apparent interfacial tension was calculated with Tomotika's theory and compared with the individual fiber experiment in literatures. The results suggest that the viscosity ratio and the interfacial tension between the materials components control both the shear-induced fiber formation and fiber stability.

Citation

ANTEC Conference Proceedings

Volume

44(2)

Pub Type

Journals

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Keywords

fiber stability, in-line optical and light scattering, interfacial tension, PES/TLCPs

Citation

Qiao, F. , Migler, K. and Han, C. (2000), Stability of Blends of Polyether Sulfone With Thermotropic Liquid Crystalline Polymers, ANTEC Conference Proceedings, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=851698 (Accessed October 14, 2025)