Wettability, Adsorption and Adhesion in Polymer (PMMA)—Commercially Available Mouthrinse System
Autor: | Stanislaw Pogorzelski, Paulina Janowicz, Krzysztof Dorywalski, Katarzyna Boniewicz-Szmyt, Pawel Rochowski |
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Jazyk: | angličtina |
Rok vydání: | 2023 |
Předmět: |
mouthrinse-PMMA
surface adsorption surface thermodynamics interfacial molecular partitioning contact angle-wettability adhesion Technology Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
Zdroj: | Materials, Vol 16, Iss 17, p 5753 (2023) |
Druh dokumentu: | article |
ISSN: | 1996-1944 |
DOI: | 10.3390/ma16175753 |
Popis: | The study concerns the evaluation of the physicochemical and thermo-adsorptive surface properties of six commercially available mouthrinses, particularly surface tension, surface activity, partitioning coefficient, critical micellar concentration, Gibbs excesses at interfaces, surface entropy, and enthalpy. The aim was to quantify their effect on the adhesion and wettability of a model poly(methyl methacrylate) (PMMA) polymer. The adsorptive and thermal surface characteristics were derived from surface tension (γLV) vs. concentration and temperature dependences. Polymer surface wettability was characterized by the contact angle hysteresis (CAH) formalism, using the measurable advancing ΘA and receding ΘR dynamic contact angles and γLV as the input data. Further, wettability parameters: Young static angle (Θ), film pressure (Π), surface free energy (γSV) with its dispersive and polar components, work of adhesion (WA), and adhesional tension (γLV cosΘA) were considered as interfacial interaction indicators. The mouthrinse effect demonstrated the parameter’s evolution in reference to the PMMA/pure water case: Θ, ΘA and ΘR↓, CAH↑, Π↓, WA↓, γSV↓, and γLVcosΘA↑. Furthermore, the variations of the surface excess ratio pointed to the formation of multilayered structures of surfactants composing the mouthrinse mixtures considered. The contact angle data allowed for the penetration coefficient and the Marangoni temperature gradient-driven liquid flow speed to be estimated. |
Databáze: | Directory of Open Access Journals |
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