2020/02/10(Mon) 11:00 -12:00 一樓演講廳 1F, Auditorium
Title
Conductivity via Cocontinuous Polymer Blends: A Little Graphene Goes a Long Way
Speaker
Emeritus Prof. Chris Macosko (University of Minnesota)Abstract
Conductive polymer composites have been developed for electrostatic discharge and electromagnetic interference shielding. Loadings of >10% conductive fillers are typically required, but such loading levels result in high melt viscosity, poor appearance, contamination by sloughed off fillers and high material cost. We have found that small amounts of graphene nanoplatelets, 0.06 wt%, if located at the interfaces in a cocontinuous polymer blend can percolate, resulting in useful conductive composites. We will show how wetting properties as well as the kinetics of graphene movement during melt mixing can help to explain graphene jamming in the interfaces.
Language
演講語言 (Language): in English
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