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Volume 12
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10.3390/polym12102423
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Article

Poly (Dimethylsiloxane) Coating for Repellency of Polar and Non-Polar Liquids

by
Hila Monder
,
Leo Bielenki
,
Hanna Dodiuk
,
Anna Dotan
and
Samuel Kenig
*
Department of Polymer Materials Engineering, Shenkar College, Ramat Gan 52526, Israel
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(10), 2423; https://doi.org/10.3390/polym12102423
Submission received: 14 September 2020 / Revised: 14 October 2020 / Accepted: 18 October 2020 / Published: 21 October 2020
(This article belongs to the Special Issue Functional Coatings and Its Applications)
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Abstract

The wettability of poly (dimethylsiloxane) (PDMS) coating on plasma-treated glass was studied at room temperature using polar and non-polar liquids. The wettability was investigated regarding the liquids’ surface tensions (STs), dielectric constants (DCs) and solubility parameters (SPs). For polar liquids, the contact angle (CA) and contact angle hysteresis (CAH) are controlled by the DCs and non-polar liquids by the liquids’ STs. Solubility parameter difference between the PDMS and the liquids demonstrated that non-polar liquids possessed lower CAH. An empirical model that integrates the interfacial properties of liquid/PDMS has been composed. Accordingly, the difference between the SPs of PDMS and the liquid is the decisive factor affecting CAH, followed by the differences in DCs and STs. Moreover, the interaction between the DCs and the SPs is of importance to minimize CAH. It has been concluded that CAH, and not CA, is the decisive attribute for liquid repellency of PDMS coating.
Keywords: contact angle (CA); contact angle hysteresis (CAH); surface tension; dielectric constant; solubility parameter contact angle (CA); contact angle hysteresis (CAH); surface tension; dielectric constant; solubility parameter
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MDPI and ACS Style

Monder, H.; Bielenki, L.; Dodiuk, H.; Dotan, A.; Kenig, S. Poly (Dimethylsiloxane) Coating for Repellency of Polar and Non-Polar Liquids. Polymers 2020, 12, 2423. https://doi.org/10.3390/polym12102423

AMA Style

Monder H, Bielenki L, Dodiuk H, Dotan A, Kenig S. Poly (Dimethylsiloxane) Coating for Repellency of Polar and Non-Polar Liquids. Polymers. 2020; 12(10):2423. https://doi.org/10.3390/polym12102423

Chicago/Turabian Style

Monder, Hila, Leo Bielenki, Hanna Dodiuk, Anna Dotan, and Samuel Kenig. 2020. "Poly (Dimethylsiloxane) Coating for Repellency of Polar and Non-Polar Liquids" Polymers 12, no. 10: 2423. https://doi.org/10.3390/polym12102423

APA Style

Monder, H., Bielenki, L., Dodiuk, H., Dotan, A., & Kenig, S. (2020). Poly (Dimethylsiloxane) Coating for Repellency of Polar and Non-Polar Liquids. Polymers, 12(10), 2423. https://doi.org/10.3390/polym12102423

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