Optical investigation into the crystallization of polyolefines from dilute solutions

With the aid of a modified Sofica light-scattering apparatus an investigation was carried out of the crystallization of polyolefines from dilute solutions in several solvents. The intensity of the light scattered at various angles was determined as a function of time in the initial period of crystallization. Both linear polyethylene and polypropylene in p-xylene and in 1-chloronaphthalene showed the formation of disk-shaped crystals, which, after their formation, rapidly grew.