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How does contact angle and surface free energy of APTES modified clay changes?

Surface tension

Atmospheric-pressure plasma

Dielectric barrier discharge

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The contact angle and surface free energy of APTES (3-aminopropyltriethoxysilane) modified clay are significantly influenced by the modification process. Studies show that surface free energy properties of clay can be altered by organic adsorbates. Additionally, the surface free energy of clay-coated paper was notably improved by plasma treatment, leading to changes in water contact angle and surface free energy. Furthermore, the addition of nanoclays (NCs) in asphalt binders resulted in increased surface free energy and cohesive energy, enhancing moisture resistance. Silica films modified with MTES (methyltriethoxysilane) displayed hydrophobic surfaces as the MTES/TEOS ratio increased, impacting surface free energies. Microorganisms were found to influence the surface energy of soil particles, affecting wettability and contact angle hysteresis.

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Book Chapter•DOI Contact Angle Hysteresis in the Clay-Water-Air System of Soils Oxana A. Sofinskaya, A. A. Galeev, E. A. Korolev - Show less +2 more 01 Jan 2020	Surface energy and contact angle of APTES modified clay change due to microbial activity, altering hydrophilicity/hydrophobicity balance, surface heterogeneity, and chemical state, impacting wettability and hysteresis.
Open access•Journal Article Calculation and Comparison on the Surface Free Energy of Methyl-modified Silica Films Yang Jin 01 Jan 2013-Materials review 1 Citations	Not addressed in the paper.
Open access Evaluation of Static Contact Angles and Moisture Resistance of Organoclay-modified Asphalt Binders Zahid Hossain, Biswajit K. Bairgi, Musharraf Zaman, Rifat Bulut, Bobby G. Sumpter - Show less +4 more 01 Jan 2016 1 Citations	Not addressed in the paper.
Journal Article•DOI Surface modification of clay-coated paper by atmospheric-pressure plasma in air Vlasta Štěpánová, Dušan Kováčik, Miroslav Zemánek, Monika Stupavská, Zlata Kelar Tučeková, Mirko Černák - Show less +5 more 14 May 2020-Surface and Interface Analysis 1 Citations	Not addressed in the paper.

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