Polystyrene PS648 inlet optical birefringence pattern, piston speed 1.4mm/s
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Authors
Hassell, David
Abstract
The optical birefringence pattern obtained from polystyrene PS648 flowing through a narrow slit. Experiment conducted on the Cambridge Multi Pass Rheometer (MPR4) at a piston speed of 1.4 mm/s at 170C. Video shows the inlet flow (from bottom to top).
Description
Conditions: Material=DOW polystyrene PS648, Mw~333kg/mol, polydispersity~2.0, Temperature=170 degrees celsius, Piston speed=1.40mm/s, slit width=0.6mm, slit length=8mm, slit depth=10mm
Keywords
rheology, polystyrene, birefringence, multi-pass rheometer
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EPSRC, funded through the second Microscale Polymer Processing consortium.