Morphology of Cereal Starches Grafted with Polyacrylonitrile

Morphological aspects of six cereal starches and their graft copolymers with polyacrylonitriles (PAN) prepared from granular as well as geletinized starches are reported. Scanning electron microscopy showed that grafting is not uniform on the surface but has also occurred in the interior of the granules. The graft copolymers prepared from gelatinized starches maintained the individuality but no resemblance with original shape of the granules.