Korea Polymer Journal, Vol.2, No.2, 140-147, October, 1994
In situ Composites of a New Thermotropic LCP and PBT
A new thermotropic liquid crystalline polymer (TLCP) containing a flexible spacer was synthesized from hydroquinone, p-hydroxybenzoic acid, and 1, 6-dibromohexane. Blends of TLCP with PBT were melt spun at different draw ratio to produce a monofilament. A maximum in the ultimate tensile strength was observed for blends containing 5% LCP regardless of draw ratio and then it decreased with further increase in the LCP content. However, the initial modulus monotonously increased with increasing the LCP content. Thermal, morphological and mechanical properties of the blends were examined by different scanning calorimetry (DSC) polarized optical microscopy, scanning electron microscopy (SEM), and capillary rheometry.
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