Abstract
The elastic moduli and mechanical losses for blends of liquid-crystalline copolyester (LCP) and PMMA have been determined at various temperatures. The specimens were produced by the extrusion of preliminary mixed components. In the course of extrusion, a system is formed where the LCP forms thin fibers imbedded into a PMMA matrix. The greatest effect of the reinforcement of the thermoplastic matrix with LCP was found for a 7/3 ratio of components. The effect of fillers (whiskers) was also investigated. It is shown that the reinforcing action of the filler is much higher for the 7/3 blends as compared with the reinforced pure components. The effects observed are explained by features of the interphase formation in the reinforced systems and the surface segregation of an LCP-component.
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