Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 50, 2014
Previous Article Next Article

Enhanced melt free radical grafting efficiency of polyethylene using a novel redox initiation method

Author affiliations

Abstract

In this work, for the first time, redox initiation was employed in the melt free radical grafting of glycidyl methacrylate (GMA) and maleic anhydride (MA) onto polyethylene (PE) by reactive extrusion. Since it is very challenging to obtain high grafting degrees of GMA and MA onto polymer backbones through conventional free radical initiation, especially in the extrusion process, the strategy of using a peroxide/reducing agent initiator was introduced. The redox initiation system was composed of dicumyl peroxide (DCP) and Tin(II) 2-ethylhexanoate (Sn(Oct)2). The grafting reaction was monitored by torque rheometry and graft products were analyzed by Fourier Transform Infrared Spectroscopy. Effects of monomer concentration and DCP/Sn(Oct)2 ratio on the degree of grafting were studied. The redox initiation proved to be very effective in improving the grafting degree of GMA and MA onto PE. It is reasoned that, in the presence of Sn(Oct)2, the free radicals produced were not subject to a cage effect, yielding high initiator efficiency.

Graphical abstract: Enhanced melt free radical grafting efficiency of polyethylene using a novel redox initiation method

Back to tab navigation

Article information


Submitted
21 Apr 2014
Accepted
06 Jun 2014
First published
06 Jun 2014

RSC Adv., 2014,4, 26425-26433
Article type
Paper

Enhanced melt free radical grafting efficiency of polyethylene using a novel redox initiation method

G. F. Brito, J. Xin, P. Zhang, T. J. A. Mélo and J. Zhang, RSC Adv., 2014, 4, 26425
DOI: 10.1039/C4RA03607G

Social activity

Search articles by author

Spotlight

Advertisements