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Free Radical Grafting of Polyethylene with Vinyl Monomers by Reactive Extrusion
Author(s) -
Zhang Guofang,
Jia Yuxi,
Sun Sheng,
Wu Lili,
Zhao Guoqun,
An Lijia
Publication year - 2007
Publication title -
macromolecular theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 56
eISSN - 1521-3919
pISSN - 1022-1344
DOI - 10.1002/mats.200700050
Subject(s) - monomer , reactive extrusion , grafting , polymer chemistry , materials science , polyethylene , extrusion , polymer , composite material , thermodynamics , physics
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.