AI Article Synopsis
- The text discusses a method for applying solid films on low-vapor pressure liquids to enhance surface functionality using liquid polyethylene glycol (PEG).
- It highlights the use of low-pressure plasma treatment to create solid-liquid gradients that facilitate the binding of plasma polymer films to polydimethylsiloxane (PDMS) backing.
- The study employs various analytical techniques to demonstrate how the thickness of the PEG substrate impacts film growth and the resulting surfaces exhibit strong hydrophilic properties suitable for applications like non-fouling or low-friction surfaces.
Article Abstract
The concept of depositing solid films on low-vapor pressure liquids is introduced and developed into a top-down approach to functionalize surfaces by attaching liquid polyethylene glycol (PEG). Solid-liquid gradients were formed by low-pressure plasma treatment yielding cross-linking and/or deposition of a plasma polymer film subsequently bound to a flexible polydimethylsiloxane (PDMS) backing. The analysis via optical transmission spectroscopy (OTS), optical, confocal laser scanning (CLSM) and scanning electron microscopy (SEM), Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) as well as by water contact angle (WCA) measurements revealed correlations between optical appearance, chemical composition and surface properties of the resulting water absorbing, covalently bound PEG-functionalized surfaces. Requirements for plasma polymer film deposition on low-vapor pressure liquids and effective surface functionalization are defined. Namely, the thickness of the liquid PEG substrate was a crucial parameter for successful film growth and covalent attachment of PEG. The presented method is a practicable approach for the production of functional surfaces featuring long-lasting strong hydrophilic properties, making them predestined for non-fouling or low-friction applications.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7767314 | PMC |
| http://dx.doi.org/10.3390/molecules25246024 | DOI Listing |
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