Flow induced chain alignment and disentanglement as the viscosity reduction mechanism within TLCP/HDPE blends

Evolution of morphological and rheological properties along the extruder length for blends of a commercial liquid crystalline polymer and polypropylene

“…The influence of the capillary number on the stability of the LCP structures has already been studied in liquid crystalline polymer and thermoplastic blends by Lazkano et al [6]. Postema and Fennis [7], Chan and co-workers [8]. Kernick and Wagner [9] studied the influence of both viscous and interfacial forces in the final morphology, confirming the importance of the capillary number.…”

Micro-Rheological Study on Fully Exfoliated Organoclay Modified Thermotropic Liquid Crystalline Polymer and Its Viscosity Reduction Effect on High Molecular Mass Polyethylene

“…It would be too difficult for NaOH to diffuse into the PE lattice and remove it from the surface. As has already been illustrated by Chan et al [36] the material removed is an anti-oxidant enrich polyethylene layer, which is caused by migration of anti-oxidant during shear. The surfaces of the blends are smooth at those apparent shear rates.…”

A comparative study of thermotropic LCP and organoclay as fillers in high molecular mass polyethylene with different blending sequences

“…Its number and weight average molecular weights are, respectively, M n = 7000 and M w = 25,000 kg/kmol, as determined from GPC. In a series of publications, we have reported that the addition of 0.2–1 wt% of this kind of TLCP to a high molecular mass polyethylene may lead to viscosity reductions of between 88% and 95% [14–16]. The organoclay Closite 20A is a natural montmorillonite modified with dimethyl dihydrogenated tallow alkyl quaternary ammonium chloride, supplied by Southern Clay Products, USA.…”