scholarly journals Erratum to: What is the Effect of Critical Surface Tension of PbSO3 Thin Film?

2014 ◽  
Vol 45 (10) ◽  
pp. 4723-4723
Author(s):  
İ. Afşin Kariper
Keyword(s):  
Thin Film ◽  
Surface Tension ◽  
Critical Surface ◽  
Critical Surface Tension

CRITICAL SURFACE TENSION, CRITICAL SURFACE ENERGY AND PARACHOR OF MnSO3 THIN FILM

2016 ◽  
Vol 23 (03) ◽  
pp. 1650009 ◽  
Author(s):  
İ. A. KARIPER
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Surface Tension ◽  
Grain Size ◽  
Surface Energy ◽  
Film Thickness ◽  
Critical Surface ◽  
Critical Surface Tension ◽  
Average Grain Size ◽  
The Relationship

This study examines the critical surface energy of manganese sulfite (MnSO[Formula: see text] crystalline thin film, produced via chemical bath deposition (CBD) on substrates. In addition, parachor, which is an important parameter of chemical physics, and its relationship with grain size, film thickness, etc., has been investigated for thin films. For this purpose, MnSO3 thin films were deposited at room temperature using different deposition times. Structural properties of the films, such as film thickness and average grain size, were examined using X-ray diffraction; film thickness and surface properties were measured by and atomic force microscope; and critical surface tension of MnSO3 thin films was measured with Optical Tensiometer and calculated using Zisman method. The results showed that critical surface tension and parachor of the films have varied with average grain size and film thickness. Critical surface tension was calculated as 32.97, 24.55, 21.03 and 12.76[Formula: see text]mN/m for 14.66, 30.84, 37.07 and 44.56[Formula: see text]nm grain sizes, respectively. Film thickness and average grain size have been increased with the deposition time and they were found to be negatively correlated with surface tension and parachor. The relationship between film thickness and parachor was found as [Formula: see text] whereas the relationship between average grain size and parachor was found as [Formula: see text] We also showed the relationships between parachor and some thin films parameters.

Durability of Coatings Based on Sol Silicate Paint

2019 ◽  
Vol 394 ◽  
pp. 1-4
Author(s):  
Valentina Ivanovna Loganina ◽  
Yerkebulan Bisengalievich Mazhitov ◽  
Yuri Petrovich Skachkov
Keyword(s):  
Surface Tension ◽  
Surface Energy ◽  
Intermolecular Interaction ◽  
Frost Resistance ◽  
Hamaker Constant ◽  
Critical Surface ◽  
Freezing And Thawing ◽  
Critical Surface Tension

The results of the study provide information on the resistance of coatings based on the solof silicate paint in the process of freezing and thawing. It was found, that coatings based on sol silicatepaints are characterized by a higher resistance compared of silicate coatings. It is shown, that thecoatings withstood 50 cycles of alternate freezing and thawing. The surface energy of the coatingswas calculated using the critical surface tension of the fluid at the interface with the solid. Thedispersion contribution in the intermolecular interaction between the particles of the coatings wasestimated. The values of the surface tension of the coatings and the values of the dispersioncomponent of the surface energy of the coatings — the complex Hamaker constant — are calculated.It was revealed, that after testing a decrease in the values of the Hamaker constant is observed. It wasestablished, that after testing for frost resistance, the values of the Hamaker constant for coatingsbased on sol of silicate paint are higher compared to coatings based on silicate paint.

scholarly journals Preparation of Silica Aerogel and Its Adsorption Performance to Organic Molecule

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Hong-xin Shi ◽  
Jing-tao Cui ◽  
Hai-min Shen ◽  
Hong-ke Wu
Keyword(s):  
Waste Water ◽  
Surface Tension ◽  
Silica Aerogel ◽  
Critical Surface ◽  
Critical Surface Tension ◽  
Adsorption Performance ◽  
Aqueous Solvent ◽  
Ft Ir ◽  
Gelling Time ◽  
Adsorption Desorption

Hydrophobic and lipophilic silica aerogel was prepared from water-glass by gelling, aging, silylation, and drying under atmospheric pressure and characterized by FT-IR and SEM. The effect of preparation process on aerogel density and the aerogel density on contact angle of water on it were investigated in detail. pH 6 is most beneficial to shorten gelling time and to obtain the lowest density of silica aerogel. Increasing TEOS concentration of aging solution to 25 v% could decrease aerogel density to 0.093 g/cm3. The silica aerogel exhibits good hydrophobicity even though its density is 0.30 g/cm3. There are few changes in their adsorption capacities after 3 cycles of adsorption-desorption. The adsorption performance of the silica aerogel to organic solvent in water is different from in pure solvents. The critical surface tension (γC) of the silica aerogel prepared here is about 30.8 mN/m. If the surface tension of aqueous solvent solution (γ) is greater thanγC, it will wet the aerogel surface partially. Ifγ  ≤  γC, the solution will wet all aerogel surface and be adsorbed well. This work delivers us a method to adsorb solvents from their waste water by adjusting the surface tension of the waste water to lower thanγCof the adsorbent.

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