High corrosion resistant – redox active – moisture curable – conducting polyurethanes
2016; Elsevier BV; Volume: 94; Linguagem: Inglês
10.1016/j.porgcoat.2016.01.022
ISSN1873-331X
AutoresRavi Arukula, Ramanuj Narayan, B. Sreedhar, Chepuri R.K. Rao,
Tópico(s)Corrosion Behavior and Inhibition
ResumoNew series of electrochemically active conducting polyurethanes (CPU) have been prepared using tetraaniline as conducting unit with IPDI-PTMG as urethane prepolymer segment. These films are robust and formed as a consequence of moisture curing of excess isocyanate. The films are novel in the sense that the conductivity is found to be in the higher side of the order of 10−3 S/cm and the tetraaniline segments are electrochemically oxidizable and/or reducible. The formed films have been subjected for thermal and mechanical tests such as TGA, DSC, DMTA and tensile tests to explore into the understanding of structure–property relations. The nano/microstructure of the polymers has been investigated by TEM analysis. These CPUs are found to be excellent anti-corrosion barrier coatings for mild steel.
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