Polystyrene PS648 inlet optical birefringence pattern, piston speed 1.4mm/s

Hassell, David (2008-08-27)


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).