Covalent attachment of poly (acrylic acid) onto multiwalled carbon nanotubes functionalized with formaldehyde via electrophilic substitution reaction
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The functionalization with formaldehyde via an electrophilic substitution reaction and graft with poly (acrylic acid) (PAA) by “grafting from” technology have been carried out for multiwalled carbon nanotubes (MWNTs) and MWNTs-PAA composites have been formed. The IR and TEM results show presence of covalent band and so-called “core-shell” structures for MWNTs-PAA. The MWNTs-PAA exhibits excellent suspendability in water, which is significant to explore the potential application of carbon nanotube in biological and medical systems.
KeywordsAcrylic Acid Atom Transfer Radical Polymerization Thermo Gravimetric Analysis Transmission Electron Microscope Result Electrophilic Substitution Reaction
This subject is supported by both National Natural Science Foundation of China (Nos. 50372020, 59972031) and the Provincial Natural Science Foundation of Hunan, China (No. 01JJY2052).
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