ИСТИНА

The excellent mechanical properties, anisometric shape and high specific surface of nanocrystalline cellulose (NCC) led to often testing as an additive to nanocomposite plastics for increasing their mechanical properties. The same time, to investigation of NCC for reinforcing fiber properties, partially polyacrylonitrile (PAN) is paid much less attention. Since PAN composition includes polar nitrile groups, the orientation of polymer chains is hindered at fiber spinning and heat treatment procedures. The NCC introduction can lead to improve PAN chains ordering due to shielding the nitrile-nitrile interaction in favor of interaction between NCC hydroxyl group and PAN nitrile group, registered by the IR spectroscopy method.