Water-dispersible carbon nanotubes for aqueous surface-initiated atom transfer radical polymerization.
A simple one-pot process was developed for the covalent immobilization of atom transfer radical polymerization (ATRP) initiators with quaternized triethylamine moieties on the carboxyl-functionalized multiwalled carbon nanotubes (MWCNTs). The initiator-coupled MWCNTs exhibited good dispersion in water and could be used directly to prepare water-dispersion of polymer-MWCNT hybrids, such as stimuli-responsive poly(N-isopropyl acrylamide)-MWCNT hybrids, via surface-initiated ATRP of N-isopropylacrylamide in an aqueous medium. The present one-pot synthesis of the ATRP initiator-immobilized MWCNTs with good dispersion in water provides an alternative route to the direct preparation of water-soluble polymer-MWCNT hybrids in aqueous media.
Xu
F J
FJ
Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 119260.
Li
J
J
Su
F
F
Zhao
X S
XS
Kang
E T
ET
Neoh
K G
KG
D003102:Colloids / Q000737:chemistry; D003460:Crystallization / Q000379:methods*; D057927:Hydrophobic and Hydrophilic Interactions; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010084:Oxidation-Reduction; D010316:Particle Size; D011108:Polymers / Q000138:chemical synthesis*; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
D003102:Colloids; D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; D011108:Polymers; D014867:Water