Formation mechanism of a nanotubular polyanilines prepared by an emulsion polymerization without organic solvent
简介:A nanotubular polyaniline (PANINT) was prepared from a simple emulsified polymerization method
without oil solvent present. A mechanism of the formation of the nano-fibers/tubes was proposed to
show that it started wit简介:A nanotubular polyaniline (PANINT) was prepared from a simple emulsified polymerization method
without oil solvent present. A mechanism of the formation of the nano-fibers/tubes was proposed to
show that it started with the connecting arrangement of the neighboring anilinium micelles before and
during polymerization, which resulted in the formation of the intermediate morphology of centipedes
converting into rod-like nanofibers later. The obtained PANINTs displayed not only nanofibrous structure
but owned an unusual dispersing behavior in toluene. SEM and TEM showed the dendrite-like networks
of nanofibers connected and glued together by the free (not complexed to polyaniline backbone) ndodecylbenzene
sulfonic acid (DBSA) molecules. After removing the free DBSA by acetone, the clear/welldefined
empty nanotubes can be seen from TEM in the magnified micrograph. The Atomic force
microscopic (AFM) microgaphs demonstrated the cottage like surface morphology of the un-perturbed
PANINTs and the morphology was converted to an anisotropic/oriented rods after rubbing on the wet/
cast PANINTs’ dispersion of toluene before entire evaporation.详细>