| Abstract
| - Poly(ethylene glycol) (PEG)-grafted polyaniline (PANi) copolymers were prepared byincorporating a chlorine end-capped methoxy PEG (mPEGCl) of molecular weight of about2000 onto the leucoemeraldine form of PANi via N-alkylation. The microstructures andcompositions of the mPEG-grafted PANi (mPEG-g-PANi) copolymers were characterized byFT-IR, elemental analysis, UV−visible absorption spectroscopy, thermogravimetric (TG)analysis and X-ray photoelectron spectroscopy (XPS). The graft concentration (degree ofN-alkylation) can be controlled by adjusting the molar feed ratio of mPEGCl to the numberof repeat units of PANi. The mPEG-g-PANi copolymers showed enhanced solubility incommon organic solvents and water. The electrical conductivity of the mPEG-g-PANicopolymer film decreased by a factor of 5 at the mPEG graft concentration of 0.05. The mPEG-g-PANi copolymer with a high graft concentration was very effective in preventing plateletadhesion.
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