Plasma-Induced Hemi-Wicking on Sanded Polymer Surfaces

Autor: Ching Jung Wu, Mu Chien Wu, Po Hsien Chiu, Jong-Shinn Wu, Chih Tung Liu, Chun Ping Hsiao
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Coatings, Vol 11, Iss 871, p 871 (2021)
Coatings
Volume 11
Issue 8
ISSN: 2079-6412
Popis: In this paper, a plasma-induced hemi-wicking phenomenon observed on hydrophobic sanded polymer surfaces, polypropylene (PP), polyethylene terephthalate (PET) and polyethylene (PE) is reported. An atmospheric-pressure argon plasma jet was used to treat a limited area of the carefully sanded polymer surfaces to induce the hemi-wicking phenomenon. Such hemi-wicking triggered by the plasma activation is different from the traditional type, which is achieved purely by the surface topography. Surface analyses by X-ray photoelectron spectroscopy (XPS) and water contact analysis (WCA) show that the combination of sanding and plasma treatment increased the oxygen-to-carbon ratio, which is highly beneficial for surface hydrophilicity. The shear stress tests show that the combination of sanding and plasma treatment can enhance the shear stress by 125%, 95%, and 296% on PP, PET, and PE, respectively. The study shows that the newly developed technique by combining the sanding and plasma processing for polymers could be a potentially useful method in future industry applications.
Databáze: OpenAIRE