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Characterization of Superhydrophobic Coatings Based on PDMS and MQ Resin on Textured Surfaces

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Abstract

The paper presents the results of studying coatings based on poly(dimethylsiloxane) rubber cross-linked with MQ resin at different contents of the latter. The PDMS : MQ resin ratios have been taken to be 2 : 1, 1 : 1, and 1 : 2. It has been shown that the application of a hydrophobic fluorinated-group-free composite with composition PDMS : MQ = 1 : 1 onto a pre-textured surface by spin-coating or deep-coating results in the formation of superhydrophobic coatings. The coatings are characterized by extremely large contact angles (170°) and rolling angles no larger than 4°. The analysis of variations in the contact angle, surface tension, and contact diameter and volume of a water droplet that has been in contact with a coating for a long time has indicated a high hydrolytic resistance of the obtained coatings.

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Funding

This work was supported by the Russian Foundation for Basic Research (project no. 19-29-13031).

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Correspondence to O. A. Serenko.

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The authors declare that they have no conflicts of interest.

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Translated by A. Kirilin

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Denman, N., Emel’yanenko, A.M., Serenko, O.A. et al. Characterization of Superhydrophobic Coatings Based on PDMS and MQ Resin on Textured Surfaces. Colloid J 85, 581–589 (2023). https://doi.org/10.1134/S1061933X23600483

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  • DOI: https://doi.org/10.1134/S1061933X23600483

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