Abstract
The single crystal of polyethylene oxide is near cubical form and its thickness is about 100 Å, the growth face is (120) plane. It is a tetragonal lamella with the molecular chain perpendicular to the lamellar surface. The radial direction of the spherulite is normal to the (120) plane if it has grown at the temperature higher than about 51°C, and to the (010) plane at the lower temperature. The radial growth rate also changes abruptly at about 51°C.
