Cyclopolymers from N,N-diallyl-N-propargyl-(12-N'-formylamino)-1- dodecylammonium chloride and their use as inhibitors for mild steel corrosion

Ali, S. A., Zaidi, S. M. J., El-Sharif, A. M. Z. and Al-Taq, Ali A. (2012) Cyclopolymers from N,N-diallyl-N-propargyl-(12-N'-formylamino)-1- dodecylammonium chloride and their use as inhibitors for mild steel corrosion. Polymer Bulletin, 69 4: 491-507. doi:10.1007/s00289-012-0765-3


Author Ali, S. A.
Zaidi, S. M. J.
El-Sharif, A. M. Z.
Al-Taq, Ali A.
Title Cyclopolymers from N,N-diallyl-N-propargyl-(12-N'-formylamino)-1- dodecylammonium chloride and their use as inhibitors for mild steel corrosion
Journal name Polymer Bulletin   Check publisher's open access policy
ISSN 0170-0839
Publication date 2012-08-01
Sub-type Article (original research)
DOI 10.1007/s00289-012-0765-3
Volume 69
Issue 4
Start page 491
End page 507
Total pages 17
Place of publication New York , NY United States
Publisher Springer
Language eng
Abstract A dodecanediamine (DDA)-based new monomer, N,N-diallyl-N-propargyl-(12-N'-formylamino)-1-dodecylammonium chloride, on homo- and co-cyclopolymerization (with SO2) afforded cationic polyelectrolytes, which on acidic hydrolysis of the formyl group gave water-soluble polyelctrolytes. One of the allyl groups undergoes cyclopolymerization with either the propargyl or the other allyl group in competing pathways; the incorporation of the allyl group is found to be faster than the propargyl unit by a ratio of 4:1. Both the monomer and its precursor as well as the polymers were used to study the corrosion inhibition of mild steel by gravimetric and electrochemical methods in acidic and saline media at 60 A degrees C. The inhibitor molecules (at a concentration of 200 ppm) exhibited inhibition efficiencies (%IE) in the ranges 81-99 % in 1 M HCl, 97-98 % in 4 M HCl, 87-93 % in 7.7 M HCl, 68-91 % in 0.5 M H2SO4, and 84-92 % in 3.5 % NaCl. There is a considerable increase in the IEs by the monomers and polymers in comparison to the parent 1,12-DDA.
Keyword Cyclopolymerization
Cationic polyelectrolyte
Corrosion inhibition
Mild steel
Polymerization
Mechanism
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
 
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