Ultrasonic decrosslinking of peroxide crosslinked HDPE in twin screw extrusion: Part II simulation and experiment

Abstract

FIG. 3. Steady state shear viscosity as a function of shear rate of the decrosslinked XHDPE obtained by TSE using compounding and decrosslinking screws without and with ultrasonic treatment at amplitudes of 10 and 13 lm. The dotted lines represent the fittings by Eq. 1a.

Molecular scale-driven upgrading of extrusion technology for sustainable polymer processing and recycling

“…In follow-up work, Moon et al [70] confirmed this relevance of the amplitude for a bio-based feedstock. The research group of Isayev also studied ultrasonic recycling of XPE, dealing with variations in the ultrasonic amplitude, flow rate, screw design, and molecular structure [71][72][73]. As a molecular driven model-based design approach can be made generic applicability is expected in the near future for both linear, branched and crosslinked polymers, also exploiting the potential of biopolymer-based application for (reactive) extrusion technology.…”

Crosslinked polyethylene: A review on the crosslinking techniques, manufacturing methods, applications, and recycling

“…In other studies, the group of Isayev studied the effect of ultrasonic amplitude, flow rate, extruder type, screw design, and initial degree of crosslinking on the ultrasonic de-crosslinking of XHDPE. [145][146][147] It was concluded that ultrasonic-assisted extrusion is a viable approach to obtain a melt-processable de-crosslinked resin with good mechanical properties. In addition, they compared the de-crosslinking of XLDPE and XHDPE using ultrasonic-aided extrusion (twin-screw extruder) with different ultrasonic amplitudes.…”