Non-ideal adsorption of divalent cations on a Langmuir monolayer: A theoretical model for predicting the composition of the resulting Langmuir–Blodgett films

2007 ◽  
Vol 131 (1-3) ◽  
pp. 155-162 ◽  
Author(s):  
M. Elena Díaz ◽  
Ramón L. Cerro ◽  
Francisco J. Montes ◽  
Miguel A. Galán
Keyword(s):  
Theoretical Model ◽  
Divalent Cations ◽  
Langmuir Monolayer ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

Chitosan-fatty acid interaction mediated growth of Langmuir monolayer and Langmuir-Blodgett films

2018 ◽  
Vol 514 ◽  
pp. 433-442 ◽  
Author(s):  
Ikbal Ahmed ◽  
Lucky Dildar ◽  
Anamul Haque ◽  
Prasun Patra ◽  
Mala Mukhopadhyay ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Langmuir Monolayer ◽  
Acid Interaction ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

Adsorption of Chicago Sky Blue on the Langmuir Monolayer and Langmuir-Blodgett Films of Octadecylamine

2011 ◽  
Vol 48 (8) ◽  
pp. 619-624 ◽  
Author(s):  
Ajitesh Pal ◽  
Bijay Kumar Mishra ◽  
Simanchalo Panigrahi ◽  
Ranendu Kumar Nath ◽  
Subrata Deb
Keyword(s):  
Langmuir Monolayer ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

Effect of Divalent Cations in Langmuir-Blodgett Films on the Protection of Copper against Corrosion

2007 ◽  
Vol 537-538 ◽  
pp. 9-16 ◽  
Author(s):  
F. Al-Taher ◽  
J. Telegdi ◽  
Erika Kálmán
Keyword(s):  
Hydroxamic Acid ◽  
Divalent Cations ◽  
Electrochemical Techniques ◽  
Contact Angle Measurement ◽  
Copper Surface ◽  
Angle Measurement ◽  
Copper Corrosion ◽  
Corrosive Media ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

Langmuir-Blodgett films (LB) of hydroxamic amphiphiles were used as coating barriers on metal surface against corrosion. Two long-chain hydroxamic acids [CH3(CH2)16CONHOH] monolayers in the presence of some divalent cations (Ca2+, Mg2+, and Cu2+) have been studied at different pH of the subphase. The monolayer was characterized by surface pressure-area isotherms and visualized by Brewster angle microscope (BAM). Compact Langmuir layers were deposited on copper surface, where the modified surfaces were characterized by contact angle measurement as well as by electrochemical techniques. The morphology of LB coated copper surface was visualized by atomic force microscopy (AFM). The coated copper surfaces were tested in corrosive media at acidic and neutral pH. The results show that the multi-molecular LB films of hydroxamic acid salts form good barriers against copper corrosion. The comparison of these results with copper coated by LB layers without divalent cations shows that the presence of divalent cations in the subphase increases the copper corrosion inhibition. The octadecanoyl hydroxamic acid (C18N) results in better and more stable monolayer with cations in the subphase.

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