A novel series of nonionic polymeric surfactants based on
triethanolaminediesteritaconate have been prepared and characterize
using FTIR and1H-NMR spectra. The surface activity, the surface
parameters and the free energies of adsorption and micellization of
these surfactants at three different temperature were also determined
and correlated to their chemical structures .The biodegradability test
of all the prepared surfactants revealed that they have a higher
tendency towards biodegradation as the biodegradation ratio of them
ranged from 88-100% after 7 days only of the exposure to the
microorganism which specified them as highly biodegradable
compounds .The synthesized nonionic surfactants were evaluated at
different concentration as corrosion inhibitor of aluminum in 1M HCl
solution using gravimetric analysis and potentodynamic polarization
measurement .It was observed that the synthesized surfactant with
lowest CMC values showed inhibition efficiency reach 93.7% after 4 h
immersion and the inhibition efficiencies increase by increasing
concentration of the studied surfactants and based on the
potentiodynamic polarization results, the synthesized compound
behaved as a mixed type inhibitor. SEM of the metal surface supported the inhibition effect of these surfactants. |
