Effect of Ultrasonic Radiation on the Crystallization of Polyethylene from Dilute Solution

Abstract

THERE is much interest at present in the morphology of polymer single crystals grown from dilute solution, and, using polyethylene, Bassett and Keller¹ have recently attempted to systematize the relationship between crystal habit and preparative method. In some of their experiments involving quenching, crystals of an unfamiliar typo were sometimes observed. These took the form of necklaces very similar to those prepared by van der Heijde² in his examination of the crystallization of polyoxymethylene from dilute solution.