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Free Radical Grafting of Polyethylene with Vinyl Monomers by Reactive Extrusion

✍ Scribed by Guofang Zhang; Yuxi Jia; Sheng Sun; Lili Wu; Guoqun Zhao; Lijia An

Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 273 KB
Volume: 16
Category: Article
ISSN: 1022-1344
DOI: 10.1002/mats.200700050

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✦ Synopsis

Abstract

The free radical grafting of polyethylene with vinyl monomers by reactive extrusion was studied numerically. Numerical computation expressions of key variables, such as the concentrations of the initiator and polymer, grafting degree, average molecular weight and apparent viscosity, were deduced. The evolutions of the above variables were predicted by means of an uncoupled semi‐implicit iterative algorithm. The monomer conversion monotonically increases with decreasing throughput or increasing initial initiator concentration; with increasing barrel temperature, the monomer conversion first increases then decreases. The simulated results are nearly in good agreement with the experimental results.

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