Burçak Arikan, F. Stadler, J. Kaschta
Jul 17, 2007
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28
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Journal
Macromolecular Rapid Communications
Abstract
The synthesis of ethene/propene macromers with a high amount of sterically unhindered vinyl groups is described. These macromers are incorporated as long-chain branches into polyethylene (PE). The remaining low molecular fractions were removed by Soxhlet extraction. Up to 60 wt.-% macromer was included, which leads to comb-like molecular topographies that distinctly affect the rheological behavior. The thermal activation energy increased significantly and the zero shear-rate viscosity enhancement factor η 0 /η lin 0 was also changed noticeably.