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A Method for PET Mechanical Properties Enhancement

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Document pages: 24 pages

Abstract: A method for PET mechanical properties enhancement by reactive blending with HBA HNA Liquid Crystalline Polymers for in situ highly fibrillar composites preparation is presented. LCP PET blends were reactively extruded in presence of Pyromellitic Di-Anhydride (PMDA) and then characterized by Differential Scanning Calorimetry, Thermally Stimulated Currents and tensile mechanical properties. Moderate amounts of LCP in the PET (0.5 and 5 ) and small amounts of thermo-active and reactive compatibilizer in the blend (0.3 ) were found to significantly improve LCP melt dispersion, melts shear transfer and LCP fibril formation and adhesion. An unexpected improvement was probably due to the presence of two distinct phases’ supra-molecular structures involving PET-LCP and PMDA.

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