Advances in Polymer Processing Additives (PPA), 2005 PLACE Conference

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In previous work1,2, flow visualization was used to understand how polymer processing additives (PPA) eliminate sharkskin in linear low-density polyethylene (LLDPE). The PPA migrates to and coats the die wall, induces slippage, and eliminates sharkskin. In this work, the interface between the PPA and LLDPE was further characterized using reflection light microscopy, scanning electron microscopy, energy dispersive X-ray, and profilometry. The coating is characterized by long stripes in the flow direction. The coating density obtained from different technologies was characterized on gold and nickel. The coating thickness was also measured.

Author: Lavallee, C.
Advances in Polymer Processing Additives (PPA)
Advances in Polymer Processing Additives (PPA), 2005 PLACE Conference
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