Original scientific paper

The Effect of the Type of Polyethylene on .the Grafting of Styrene onto Polyethylene. III. The Crosslinking Effect in the Grafting by Preirradiation in Vacuum

J. Dobo ; Research Institute of Plastics, Budapest, Hungary
F. Ranogajec ; Institute »Ruder Boskovic«, Zagreb, Croatia, Yugoslavia
I. Dvornik ; Institute »Ruder Boskovic«, Zagreb, Croatia, Yugoslavia

Abstract

The graft-copolymerisation of styrene onto the free radicals
trapped in vacuum-irradiated polyethylene was investigated. By
an increase of the rigidity of the foils, the grafting rate is also
increased, because the termination of the growing chains becomes
more hindered. But further increase of the rigidity causes grafting
to stop at comparatively low values. Crosslinking of the foils also
increases this rigidity, while raising of grafting temperature partially
eliminates its effect. Based on the experimental results, some
kinetic and structural factors governing the grafting reactions are
discussed and some former theories are revised.

Keywords

Hrčak ID:

197522

URI

https://hrcak.srce.hr/197522

Publication date:

10.2.1971.

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