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Title: Synthesis and characterization of poly(ethylene glycol)-grafted polyaniline
Authors: Wang, P. 
Tan, K.L. 
Zhang, F.
Kang, E.T. 
Neoh, K.G. 
Issue Date: 2001
Citation: Wang, P., Tan, K.L., Zhang, F., Kang, E.T., Neoh, K.G. (2001). Synthesis and characterization of poly(ethylene glycol)-grafted polyaniline. Chemistry of Materials 13 (2) : 581-587. ScholarBank@NUS Repository.
Abstract: Poly(ethylene glycol) (PEG)-grafted polyaniline (PANi) copolymers were prepared by incorporating a chlorine end-capped methoxy PEG (mPEGCl) of molecular weight of about 2000 onto the leucoemeraldine form of PANi via N-alkylation. The microstructures and compositions of the mPEG-grafted PANi (mPEG-g-PANi) copolymers were characterized by FT-IR, elemental analysis, UV - visible absorption spectroscopy, thermogravimetric (TG) analysis and X-ray photoelectron spectroscopy (XPS). The graft concentration (degree of N-alkylation) can be controlled by adjusting the molar feed ratio of mPEGCl to the number of repeat units of PANi. The mPEG-g-PANi copolymers showed enhanced solubility in common organic solvents and water. The electrical conductivity of the mPEG-g-PANi copolymer 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 platelet adhesion.
Source Title: Chemistry of Materials
ISSN: 08974756
DOI: 10.1021/cm000829c
Appears in Collections:Staff Publications

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