The C1s peaks of
pristine MWCNT, MWCNT-OH, and PBT-g-MWCNTs were deconvoluted
into four binding energies, i.e., 284.6, 286.0, 287.2, and
289.0 eV that correspond to carbon-carbon single and double
bonds, carbon bonded to ether, carbonyl groups, and ester groups,
respectively