supported by the National Natural Science Foundation of China (Grant No.50673052);the Major State Basic Research Development Program of China (973 Program) (Grant No.2006CB605314);the Provincial Natural Science Foundation of Shandong Province (Grant No.Z2008F02)
Polyacrylonitrile (PAN) fiber is an important precursor fiber for high performance carbon fiber.The properties of the final carbon fiber depend strongly on the nature of the PAN fibers.The PAN fibrils were separated s...