Surface free energy of the human skin and its critical surface tension of wetting in the skin/surfactant aqueous solution/air system

2014 ◽  
Vol 21 (2) ◽  
pp. 214-223 ◽  
Author(s):  
J. Krawczyk
Keyword(s):  
Aqueous Solution ◽  
Surface Tension ◽  
Free Energy ◽  
Surface Free Energy ◽  
Human Skin ◽  
Critical Surface ◽  
Critical Surface Tension ◽  
Air System ◽  
Surfactant Aqueous Solution

The critical surface tension of Polish coals and their surface free energy components

Fuel ◽  
1988 ◽  
Vol 67 (5) ◽  
pp. 688-692 ◽  
Author(s):  
Wiesz.xl;law Wójcik ◽  
Tomasz Biaz.xl;lopiotrowicz ◽  
Bronisz.xl;law Jańczuk
Keyword(s):  
Surface Tension ◽  
Free Energy ◽  
Surface Free Energy ◽  
Critical Surface ◽  
Critical Surface Tension ◽  
Energy Components

scholarly journals Surface modification and adhesion improvement of polyester films

2013 ◽  
Vol 11 (1) ◽  
pp. 35-45 ◽  
Author(s):  
Aniello Cammarano ◽  
Giovanna Luca ◽  
Eugenio Amendola
Keyword(s):  
Free Energy ◽  
Surface Modification ◽  
Surface Free Energy ◽  
Self Assembly ◽  
Treatment Time ◽  
Solution Treatment ◽  
Film Surface ◽  
Critical Surface ◽  
Hydrolysis Time ◽  
Critical Surface Tension

AbstractFacile surface modification of polyester films was performed via chemical solutions treatment. Surface hydrolysis was carried out by means of sodium hydroxide solutions, leading to the formation of carboxylate groups. Three commercial polyester films of 100 μm in thickness were used in this work: AryLite™, Mylar™, and Teonex™, hydrolysis time being the main modification parameter. FTIR-ATR analysis, topography and contact angle (CA) measurements, surface free energy (SFE) and T-Peel adhesion tests were carried out to characterize the modified films. A quantitative estimate of the carboxylates surface coverage as a function of treatment time was obtained through a supramolecular approach, i.e. the ionic self-assembly of a tetracationic porphyrin chromophore onto the film surface. The surface free energy and critical surface tension of the hydrolyzed polyesters was evaluated by means of Zisman, Saito, Berthelot and Owens-Wendt methods. It was shown that NaOH solution treatment increases roughness, polarity and surface free energy of polymers. As a result, T-Peel strengths for modified Mylar™ and Teonex™ films were respectively 2.2 and 1.8 times higher than that for the unmodified films, whereas AryLite™ adhesion test failed.

Surface Free Energy. Surface Tension

W Tungsten ◽  
1993 ◽  
pp. 74-81
Author(s):  
Gerhard Czack ◽  
Gerhard Kirschstein ◽  
Wolfgang Kurtz ◽  
Frank Stein
Keyword(s):  
Surface Tension ◽  
Free Energy ◽  
Surface Free Energy ◽  
Energy Surface ◽  
Free Energy Surface

Discussion on the Surface Tension and the Surface Free Energy

Daxue Huaxue ◽  
2016 ◽  
Vol 31 (9) ◽  
pp. 77-82
Author(s):  
Zhen-Xing YIN ◽  
◽  
Hui KONG ◽  
Hai-Chuan WANG ◽  
Jun ZHANG ◽  
...  
Keyword(s):  
Surface Tension ◽  
Free Energy ◽  
Surface Free Energy
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