Deposition and Characterisation of Plasma Polymerised Allyl Methacrylate Based Coatings

• Published in: Plasma processes and polymers Vol. 9; no. 8; pp. 799 - 807
• Main Authors: Kakaroglou, Alexandros, Scheltjens, Gill, Nisol, Bernard, De Graeve, Iris, Van Assche, Guy, Van Mele, Bruno, Willem, Rudolph, Biesemans, Monique, Reniers, François, Terryn, Herman
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.08.2012; WILEY‐VCH Verlag; Wiley-VCH
• Subjects: allyl methacrylate; Applied sciences; atmospheric plasmas; dielectric barrier discharges; Exact sciences and technology; organic primers; Physicochemistry of polymers; Polymerization; Polymers and radiations; organic primers; Methacrylate polymer; Adhesivity; Coating material; dielectric barrier discharges; Atmospheric pressure; Molecular structure; atmospheric plasmas; Allylic ester polymer; Aluminium; Deposition rate; Experimental study; Glow discharge polymerization; allyl methacrylate; Crosslinked polymer; Surface properties; Priming coat; Plasma deposition
• ISSN: 1612-8850; 1612-8869
• DOI: 10.1002/ppap.201100162

Allyl methacrylate (AMA) was deposited on aluminium using atmospheric dielectric barrier discharge plasma. AMA posseses two CC bonds which have very different reactivities and the efficiency of the plasma on polymerising the two different kinds of double bonds was evaluated. The Fourier transform infrared spectra and the nuclear magnetic resonance spectra of the plasma coatings were compared with those of conventionally synthesised poly(AMA). The influence of the monomer feed on the ester, the vinyl and the allyl functionalities of the coatings were investigated. Plasma coatings showed lower concentration of non‐reacted allyl groups than conventional poly(AMA) suggesting a more cross‐linked network. Pull‐off adhesion tests were performed after the deposition of the a topcoat to evaluate the potential use of the AMA based coatings as adhesion promoter. Allyl methacrylate deposited using atmospheric dielectric barrier discharge plasma. Infrared and nuclear magnetic resonance spectroscopy show that both allyl and vinyl moieties are polymerised during deposition. This suggests a formation of a crosslinked organic film that can be used as intermediate between aluminium and polyester topcoat. Pull‐off tests show a promising adhesion performance.