Next Article in Journal
Contribution of High Mechanical Fatigue to Gas Turbine Blade Lifetime during Steady-State Operation
Previous Article in Journal
Low Deposition Temperature-Induced Changes of the Microstructure and Tribological Property of WS2 Film
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle

Surface Activation of Poly(Methyl Methacrylate) with Atmospheric Pressure Ar + H2O Plasma

1
Physics Department, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, P.O. 173, Al-Kharj 11942, Saudi Arabia
2
Physics Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
Coatings 2019, 9(4), 228; https://doi.org/10.3390/coatings9040228
Received: 7 March 2019 / Revised: 21 March 2019 / Accepted: 27 March 2019 / Published: 30 March 2019
  |  
PDF [653 KB, uploaded 16 April 2019]
  |  

Abstract

The atmospheric pressure of Ar + H 2 O plasma jet has been analyzed and its effects on the poly(methyl methacrylate) (PMMA) surface has been investigated. The PMMA surface treatment was performed at a fixed gas flow-rate discharge voltage, while varying the plasma treatment time. The Ar + H 2 O plasma was studied with optical emission spectroscopy (OES). Optimum plasma conditions for PMMA surface treatment were determined from relative intensities of Argon, hydroxyl radical (OH), oxygen (O) I emission spectra. The rotational temperature T rot of Ar + H 2 O plasma was determined from OH emission band. The PMMA surfaces before and after plasma treatment were characterized by contact angle and surface free energy measurements, X-ray photoelectrons spectroscopy (XPS), atomic force microscope (AFM) and UV-spectroscopy. The contact angle decreased and surface free energy increased with plasma treatment time. XPS results revealed the oxygen to carbon ratio (O/C) on plasma-treated PMMA surfaces remarkably increased for short treatment time ≤60 s, beyond which it has weakly dependent on treatment time. The carbon C 1s peak deconvoluted into four components: C–C, C–C=O, C–O–C and O–C=O bonds and their percentage ratio vary in accordance with plasma treatment time. AFM showed the PMMA surface roughness increases with plasma treatment time. UV-visible measurements revealed that plasma treatment has no considerable effect on the transparency of PMMA samples. View Full-Text
Keywords: non-thermal plasma; OES; PMMA; XPS; AFM; surface free energy non-thermal plasma; OES; PMMA; XPS; AFM; surface free energy
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Abdel–Fattah, E. Surface Activation of Poly(Methyl Methacrylate) with Atmospheric Pressure Ar + H2O Plasma. Coatings 2019, 9, 228.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Coatings EISSN 2079-6412 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top