Authors: Bakhshali Massoumi Mehdi Jaymand Reza Samadi Ali Akbar Entezami
Publish Date: 2014/04/22
Volume: 21, Issue: 5, Pages: 442-
Abstract
We describe an effective route for the in situ chemical oxidative graft polymerization of thiophene derivatives from multiwalled carbon nanotubes MWCNTs To this goal MWCNTs was carboxylated MWCNTsCOOH by conventional acid oxidation process and then carboxylic groups were converted to acylchloride groups MWCNTsCOCl by treating of MWCNTsCOOH with thionyl chlorides These acylchloridefunctionalized MWCNTs were further reacted with 2hydroxymethylthiophene HMT to produce thiophenefunctionalized multiwalled carbon nanotubes MWCNTsT Afterwards the graft polymerization of 22’bithiophene BT 34ethylenedioxythiophene EDOT and 3dodecylthiophene DDT monomers from MWCNTsT was initiated by oxidized thiophene groups in the MWCNTs after addition of ferric chloride FeCl3 an oxidative catalyst for polythiophene derivatives synthesis and FeCl3doped PBT PEDOT and PDDT was chemically grafted to the MWCNTs by oxidation polymerization The chemical structures of all samples as representatives were characterized by Fourier transform infrared FTIR spectroscopy The thermal properties of the MWCNTsgpolythiophenes and their pure polymers were examined by thermogravimetric analysis TGA Moreover direct and clear evidence of the PBT PEDOT and PDDT chemically grafted to the MWCNTs were obtained by scanning electron microscopy SEM and transmission electron microscopy TEM
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