PURIFICATION OF TURKISH BENTONITES AND INVESTIGATION OF THE CONTACT ANGLE, SURFACE FREE ENERGY AND ZETA POTENTIAL PROFILES OF ORGANO-BENTONITES AS A FUNCTION OF CTAB CONCENTRATION

2020 ◽  
Vol 68 (3) ◽  
pp. 250-261
Author(s):  
H. Çiftçi ◽  
B. Ersoy ◽  
A. Evcin
Keyword(s):  
Contact Angle ◽  
Free Energy ◽  
Zeta Potential ◽  
Surface Free Energy ◽  
Ctab Concentration

scholarly journals Surface free energy components of glass from ellipsometry and zeta potential measurements

1989 ◽  
Vol 132 (1) ◽  
pp. 54-61 ◽  
Author(s):  
E Chibowski ◽  
L Hołysz ◽  
G.A.M Kip ◽  
A van Silfhout ◽  
H.J Busscher
Keyword(s):  
Free Energy ◽  
Zeta Potential ◽  
Surface Free Energy ◽  
Energy Components

Within-tree variations in the surface free energy of wood assessed by contact angle analysis

2011 ◽  
Vol 46 (1-3) ◽  
pp. 287-298 ◽  
Author(s):  
Davide Rossi ◽  
Sergio Rossi ◽  
Hubert Morin ◽  
Antonio Bettero
Keyword(s):  
Contact Angle ◽  
Free Energy ◽  
Surface Free Energy ◽  
Contact Angle Analysis

Hydrophobic and Oleophilic Filter Paper for Oil/Water Separation

2019 ◽  
Vol 798 ◽  
pp. 385-390
Author(s):  
Sunisa Jindasuwan ◽  
Sitthisuntorn Supothina
Keyword(s):  
Contact Angle ◽  
Free Energy ◽  
Surface Free Energy ◽  
Water Contact Angle ◽  
Filter Paper ◽  
Diesel Oil ◽  
Selective Removal ◽  
Water Contact ◽  
Water Separation ◽  
Filter Papers

The separation of oil from water is significance for environmental de-pollution application. To obtain selectivity of liquid, filter papers were coated to bear highly hydrophobic and oleophilic functionality that can allow only oils to pass through them. The coating solutions were prepared by mixing poly(methylhydro siloxane, PMHS) and fumed silica at various proportions. To determine an optimum coating condition, properties of the treated filter papers were investigated by measuring water contact angle and surface free energy, examining surface morphology and testing for selective removal of diesel oil from water. The optimum coating solution was at the PMHS:fumed silica weight ratio of 1.25:1.00. The treated filter paper exhibited high hydrophobicity with water contact angle of 142.80 ± 0.36 degrees and surface free energy of 0.78 mJ/m2. In addition, it exhibited high selective removal of diesel oil from water with oil absorption capacity of 2.3 g/g.

Properties of oral streptococci relevant for adherence: Zeta potential, surface free energy and elemental composition

1988 ◽  
Vol 32 ◽  
pp. 297-305 ◽  
Author(s):  
H.C. Van Der Mei ◽  
A.J. Léonard ◽  
A.H. Weerkamp ◽  
P.G. Rouxhet ◽  
H.J. Busscher
Keyword(s):  
Free Energy ◽  
Zeta Potential ◽  
Elemental Composition ◽  
Surface Free Energy ◽  
Potential Surface ◽  
Oral Streptococci

Measurement of specific surface free energy of ruby and quartz single crystals using contact angle of liquids

2007 ◽  
Vol 42 (12) ◽  
pp. 1217-1221 ◽  
Author(s):  
Takaomi Suzuki ◽  
Naoki Sugihara ◽  
Eiichi Iguchi ◽  
Katsuya Teshima ◽  
Shuji Oishi ◽  
...  
Keyword(s):  
Contact Angle ◽  
Free Energy ◽  
Specific Surface ◽  
Single Crystals ◽  
Surface Free Energy
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