Effect of Nanoclay Incorporation on the Thermal Properties of Poly(ethylene terephthalate)/Liquid Crystal Polymer Blends

Abstract

The effect of OMLS incorporation on the thermal properties of PET/LCP blends is studied. Pure and OMLS‐modified PET/LCP blends were prepared by melt‐extrusion using twin‐screw extruder. The morphological analyses of PET/LCP blends show that OMLS addition enhances the phase‐separated structure of the pure blend. A detailed study on the thermal properties of the pure and OMLS‐modified PET/LCP blends were carried out by means of DSC in both conventional and modulation modes. Results show a complex melting behaviour comprises of successive melting and re‐crystallisation. Finally, non‐isothermal crystal‐growth kinetics of pure and OMLS‐modified blends were investigated.magnified image

Fabrication of High Performance PET/TLCP Fibers through the Synergistic Interfacial Enhancement and Compatibilization of Functional 1D and 2D Carbon Nanomaterials

“…Thermotropic liquid crystal polyesters (TLCPs) have the anisotropic properties of the liquid crystalline state and thus retain a high degree of orientation in the melt‐state; this has attracted considerable interest. [ 1–3 ] These systems offer high strength and modulus, and a high degree of orientation in the melt state. TLCP has flame retardancy, and blending TLCP with other conventional polymers such as polyamides, polyimides, polyolefin, poly(phenylene sulfide), polyesters, polycarbonates, and ultra‐high‐molecular‐weight polyethylene is a novel approach for reinforcing polymer matrixes.…”

Ionization–liquid‐crystalline polymer synergistically reinforced poly(ethylene terephthalate) due to interfacial compatibilization by ion–dipole interactions

“…This lowered chain regularity likely leads to reductions in both the PET crystallinity and the semiflexible LCP liquid crystallinity, thereby rendering mechanical enhancement of the PET matrix less significant than expected. Under these circumstances, researchers 20,21 have endeavored to further mechanically strengthen PET/LCP composites with ceramic fillers in which, in addition to the aforementioned issues related to equipment wear and viscosity increase, unsatisfactory results have been obtained, possibly as a consequence of the weak PET matrix/filler interactions.…”