Polyaniline: a polymer with many interesting intrinsic redox states

Grafting: a versatile means to modify polymers Techniques, factors and applications

Polymer surface with graft chains

Recently a variety of technologies have been proposed for improving surface properties of polymers. Among them is surface grafting of polymers. Although this is a rather new technology, polymer surface grafting offers versatile means for providing existing polymers with new functionalities such as hydrophilicity, adhesion, biocompatibility, conductivity, anti-fogging, anti-fouling, and lubrication. This review article describes various methods of grafting and grafted surface characterizations. Medical and non-medical applications connected with this polymer surface grafting are also presented referring to recent publications.

Surface modification of polymers by grafting

Recent progress in chemical modification of polyaniline

Both pristine and argon plasma treated emeraldine (EM) base films were subjected to near-UV light-induced graft copolymerization with acrylamide, sodium styrenesulfonate (NaSS) and acrylic acid (AAc). It was found that in each case, the density of surface grafting is enhanced by plasma treatment. Surface grafting with the three polymers also leads to a more hydrophilic film. Grafting with NaSS and AAc polymers readily gives rise to a self-doped or self-protonated EM surface structure. However, a substantial proportion of the grafted protonic acid groups at the surface remains free for further surface modification and functionalization

N. Morikawa

Papers

Surface modifications of polyaniline films by graft copolymerization