Single Crystals of Polyethylene Terephthalate

Abstract

Single crystals of polyethylene terephthalate were obtained by crystallization from dilute solutions in various solvents. Spherulites, dendrites, twins and spiral growth were also observed. The selected area diffraction patterns of the single crystal show that the molecular axis tilts at about 25°. It was confirmed that the thickness of the lamelae are about 100Å, and it depends upon the crystallization temperature and the solvent.