scholarly journals Anticorrosive Performance of Vinyl Butyral-co-vinyl alcohol-co- vinyl Acetate Based Copolymer Adsorbed on Steel Surfaces. Electrochemical and AFM Studies

2020 ◽  
pp. 10197-10211
Author(s):  
Claudia Merişanu ◽  
Keyword(s):  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Steel Surfaces ◽  
Vinyl Butyral

scholarly journals Poly (Vinyl Butyral-Co-Vinyl Alcohol-Co-Vinyl Acetate) Coating Performance on Copper Corrosion in Saline Environment

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 439
Author(s):  
Adriana Samide ◽  
Claudia Merisanu ◽  
Bogdan Tutunaru ◽  
Gabriela Eugenia Iacobescu
Keyword(s):  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Electrochemical Impedance ◽  
Copper Surface ◽  
Copper Sample ◽  
Electrochemical Measurements ◽  
Copper Corrosion ◽  
Nacl Solution ◽  
Force Microscopy ◽  
Vinyl Butyral

Poly (vinyl butyral-co-vinyl alcohol-co-vinyl acetate) named further PVBA was investigated as a protective coating for copper corrosion in 0.9% NaCl solution using electrochemical measurements such as, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization associated with atomic force microscopy (AFM). The PVBA coating on the copper surface (Cu-PVBA) was modeled in methanol containing PVBA. Its inhibitory properties against corrosion was comparatively discussed with those of the copper sample treated in methanol without polymer (Cu-Me) and of untreated sample (standard copper). A protective performance of PVBA coating of 80% was computed from electrochemical measurements, for copper corrosion in NaCl solution. Moreover, AFM images designed a specific surface morphology of coated surface with PVBA, clearly highlighting a polymer film adsorbed on the copper surface, which presents certain deterioration after corrosion, but the metal surface was not significantly affected compared to those of untreated samples or treated in methanol, in the absence of PVBA.

Solid terpolymer electrolyte based on poly(vinyl butyral-co -vinyl alcohol-co -vinyl acetate) incorporated with lithium salt and tetraglyme for EDLCs

2017 ◽  
Vol 135 (8) ◽  
pp. 45902 ◽  
Author(s):  
Mohd Zikrilhakim Bidin ◽  
Ng Hon Ming ◽  
Fatin Saiha Omar ◽  
K. Ramesh ◽  
S. Ramesh
Keyword(s):  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Lithium Salt ◽  
Vinyl Butyral

scholarly journals Poly(Vinyl Butyral-co-Vinyl Alcohol-co-Vinyl Acetate) Coating Performance on Copper Corrosion in Saline Environment

2019 ◽  
Author(s):  
Adriana Samide ◽  
Claudia Merisanu ◽  
Bogdan Tutunaru ◽  
Gabriela Eugenia Iacobescu
Keyword(s):  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Electrochemical Impedance ◽  
Copper Surface ◽  
Copper Sample ◽  
Electrochemical Measurements ◽  
Copper Corrosion ◽  
Nacl Solution ◽  
Force Microscopy ◽  
Vinyl Butyral

Poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) named further PVBA was investigated as protective coating for copper corrosion in 0.9 % NaCl solution using electrochemical measurements such as, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization associated with Atomic Force Microscopy (AFM). The PVBA coating on the copper surface (Cu-PVBA) was modeled in methanol containing PVBA. Its inhibitory properties against corrosion was comparatively discussed with those of the copper sample treated in methanol without polymer (Cu-Me) and of untreated sample (standard copper). A protective performance of PVBA coating of 80 % was computed from electrochemical measurements, for copper corrosion in NaCl solution. Also, AFM images designed a specific surface morphology of coated surface with PVBA, clearly highlighting a polymer film adsorbed on the copper surface, which presents certain deterioration after corrosion, but metal surface was not significantly affected compared to those of untreated samples or treated in methanol, in the absence of PVBA.

DEVELOPMENT OF COMPOSITE MATERIALS BASED ON POLYURETHANE UREAS WITH FRAGMENTS OF A COPOLYMER OF POLY(VINYL BUTYRAL, VINYL ACETATE AND VINYL ALCOHOL) AND LYSOZYME

2020 ◽  
Vol 42 (2) ◽  
pp. 136-143
Author(s):  
K.V. Stashenko ◽  
◽  
T.V. Vislohuzova ◽  
N.A. Galatenko ◽  
R.A. Rozhnova ◽  
...  
Keyword(s):  
Composite Materials ◽  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Vinyl Butyral

scholarly journals Consolidation of Fir Wood by Poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) Treatment: Study of Surface and Mechanical Characteristics

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1039
Author(s):  
Danial Harandi ◽  
Javier González-Benito ◽  
Dania Olmos
Keyword(s):  
Mechanical Properties ◽  
Contact Angle ◽  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Untreated Wood ◽  
Hydrophobic Surface ◽  
Solution Concentration ◽  
Bending Test ◽  
Water Contact ◽  
Vinyl Butyral

The ability of poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) (PVBVA) to consolidate Fir wood was studied in terms of the surface and mechanical properties’ changes. Two variables were considered to treat the wood: (i) the concentration (5 and 10 wt.%) of PVBVA solutions and (ii) the method of application (brushing and immersion). The presence of PVBVA on the wood surfaces was confirmed by infrared spectroscopy. Surface roughness measured by optical profilometry did not reveal changes in the topography of the samples, and appropriate visual appearance was confirmed. Contact angle measurements showed that a droplet of the 10%-PVBVA solution needed ~50 s to reach the same contact angle decreasing rate as that measured for the 5%-PVBVA solution, suggesting there was some kind of induction time till the spreading process was no longer controlled by the viscosity, but by the solution-wood interactions. Water contact angle (WCA) measurements proved a more hydrophobic surface of the PVBVA-treated samples, compared to untreated wood. Mechanical characterization of the samples was done macroscopically by a three-point bending test and locally by the Shore D and Martens hardness (MH). Only results from MH experiments provided comparative results, indicating that treatment with PVBVA solutions increased wood hardness locally, being enhanced with solution concentration. The best surface mechanical properties were obtained for the samples immersed in the 10%-PVBVA solution.

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