Friction Reduction in Dilute Solutions of Polystyrene. Part 1.
NAVAL UNDERWATER SYSTEMS CENTER NEWPORT R I
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Experiments reported herein were carried out to define and produce a calibrated polymer candidate which exhibited friction reduction with simultaneous specification of its macro-molecular properties. A series of polystyrene polymers were synthesized by a novel polymerization scheme and were extensively characterized by modern and classical techniques. The results of turbulent flow and shear wear experiments on these polystyrenes defined a range of molecular parameters in which excellent dilute solution performance was obtained for the first time reported. A complete analytical specification of the weight distribution function was obtained from experimental data. Intrinsic viscosity and normal stress measurements were made and interpreted. The acquisition of these uniquely characterized polysytrenes is shown to form a basis for future studies. Recommendations are made as to direction and execution of future research into polystyrene and other polymer mechanisms which are aimed at optimizing performance in naval applications. Modified author abstract
- Fluid Mechanics
- Atomic and Molecular Physics and Spectroscopy