Properties of a semi‐crystalline and an amorphous thermotropic liquid crystalline polymer

A commercial semi-crystalline (Vectra A950) and an amorphous (HX-2000) thermotropic liquid crystalline polymer were studied. DSC and DMTA confirm the presence of a small melting endotherm and a glass transition in the former material. The as-received amorphous polymer exhibits no obvious melting endotherm and a strong glass transition is detected. The flow and tensile properties of the semi-crystalline polymer are dominated by the fpresence of the crystalline to nematic transition temperature. The properties of the amorphous polymer are governed by increasing mobility afforded by increasing temperature

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