Shawn Martey (email): is a PhD student in the Plastics Engineering program at the University of Massachusetts, Lowell. His research interest lies in the sustainable manufacturing and recycling of plastics. He has a bachelor's degree in Chemical Engineering from the Kwame Nkrumah University of Science and Technology, Ghana. Shawn is supervised by Prof. Margaret Sobkowicz-Kline and Prof. Wan-Ting (Grace) Chen, both of the Plastics Engineering department at UMass Lowell. His current project focuses on mechanical recycling of plastics. This involves blending of polymers using the twin screw extruder whiles incorporating catalysts, compatibilizers and/or other additives. Besides research, Shawn enjoys playing badminton, and watching comedy skits.

Talk details: Hybrid Chemo-Mechanical Plastics Recycling: Solvent-free, High-speed Reactive Extrusion of Low-Density Polyethylene
Low density polyethylene: useful materials for the packaging industry but are problematic due to the difficulty in recycling. Interest in chemical recycling techniques such as pyrolysis is fast growing but most of these processes face techno-economic and/or environmental challenges. In this work we describe a hybrid chemical-mechanical approach using reactive twin screw extrusion approach to modify the molecular weight and chain structure of LDPE.