A novel class of interesting polyurea derivatives
6a-c and 7a-c was synthesized using solution polycondensation
technique by the interaction of 1 mole of bis (2-
aminothiazol-4-ylbenzylidene)cycloalkanones monomers
3a,b with one moles of diisocyanate compounds in pyridine.
The model compounds 4 and 5 were synthesized by the
interaction of one mole of monomers 3a or 3b with two
moles of phenylisocyanate in pyridine and their structures
were confirmed by correct elemental and spectral analyses.
The resulting polymers were characterized by elemental
and spectral analyses, beside solubility and viscometry
measurements. X-ray analysis showed these polymers
having high degree of crystallinity in the region 2θ=5–
60°. In addition, the morphological properties of selected
examples were tested by SEM, and the electrical properties
of these polymers were measured. Moreover the corrosion
inhibition behavior of diarylidenecycloalkanone monomers
and selected examples of polyurea derivatives were carried
out on steel in 0.5 M H2SO4 at 40°C giving cathodic,
anodic and mixed inhibition.