Crystalline polymers prepared by the radiation induced solid state polymerization

It was found that the polymers obtained from the monomer in a large single crystalline state had higher melting points than those obtained in an aggregate state of small crystals. X-ray-diffraction analysis was made on these polymers for estimating their structures. Polydiketene, poly- beta - propiolactone, and polyoxymethylene structures are discussed. (M.C.G.)