Abstract
AbstractIn this work the rheological behaviour of different Mw samples of a thermotropic liquid crystalline polymer (TLCP), the random copolymer HBA/HNA 73/27 produced by Ticona, has been investigated. The linear viscoelastic behavior has been discussed. The G′ (shear storage modulus) and G″ (shear loss modulus) have been monitored as a function of frequency and of different annealing times. Rheological data obtained in steady state conditions have been used to define the viscosity flow curves for the different MW samples. In all the cases a three regions flow curve has been detected, with the plateau zone being Mw dependent.
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