Effect of Hyperbranched Polyesters Additives on Electrospining Behavior of Polyacrylonitrile

Hyperbranched polyester Boltern H20 was modified with decanol and 2-perfluorooctyl ethanol to produce alkyl-modified and fluoride-modified H20 derivatives H20-g-C10 and H20-g-PFOE. The electrospun fibers from w(PAN)=10% PAN/DMF solutions containing w=1%, 5%, 10%（with aspect to PAN）H20 derivatives were uniform without any beads. The influence of fraction of these modified hyperbranched polyesters on morphology of electrospun fibers was investigated.