NOVEL EXFOLIATED NANOCOMPOSITE FROM POLYANILINE GRAFT COPOLYMER/CLAY

摘要

The present invention relates to a method for preparing exfoliated nano-composite from polyaniline graft copolymer/clay and the nano-composite prepared by the same. According to the present invention, a exfoliated polyaniline (PANI)/clay nanocomposites were prepared by in-situ polymerization of aniline onto pre-exfoliated water-soluble poly (styrenesulfonic acid- co - aminostyrene) (P(SSA-co-AMS))/clay nanocomposite or by simple blending of poly (styrenesulfonic acid- g-aniline) (PSSA-g-PANI). When an aqueous mixture of P(SSA-co-AMS) and clay was treated with 1 M HCl (aq.), clay layers are exfoliated into the polymer matrix due to the electrostatic interaction between the positive charge of nitrogen (NH3<+>) in P(SSA-co-AMS) and the negatively charged surface of clay layers. The electrical conductivity of the nanocomposite is slightly lower than that of pure PSSA-g-PANI but the thermal stability of the nanocomposite becomes better as compared with PSSA- g-PANI.