A Study of the Miscibility and the Rheological Properties of Thermotropic Liquid Crystalline Polymers in Thermoplastic Matrix

Abstract By using FTIR and DSC, the interfacial property of the polymer blends of engineering thermoplastics (TPs): polycarbonate (PC) and polyethersulfone (PES) with thermotropic liquid crystalline polymers (TLCPs) was studied. The TLCP/TP blend systems in this paper are mainly immiscible. The viscosity properties of the TLCP/TP blends were analyzed in detail. The mechanism of the viscosity variation of the blends was discussed. Based on the assumptions given in this paper, the reasoned theoretical formula of the blends' viscosity can express the abnormal variation of the viscosity of the TLCP/TP blends well. The variation regularity of the viscosity of TLCP/TP blends during processing was analyzed in theory.