PP/ROSIN Blends:lsothermal Crystallization

摘要

The isothermal crystallization of polypropylene (PP) melt blended with a glycerol ester of hydrogenated rosin(ester gum)(PP/ROSIN)were prepared under select conditions using up to 50% of rosin revealed phase separation.The presence of rosin changed the radial growth rate and size of PP spherulites.The rosin-separated domains were noticed in the intraspherulitic and interspherulitic regions and increased in size when the oligomer enriched the blends.Up to 30% of rosin,samples isothermally crystallized at 125degC showed a decrease of spherulite radial growth rate and above that amount an increase was observed.