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Publications (3)5.9 Total impact

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    ABSTRACT: By combining a liquid primer and a plasma jet system, a new route to improved adhesion on various substrates has been developed. The liquid primer is introduced as an aerosol into a plasma jet and the resultant active species are deposited as a polymer coating on adjacent surfaces. Careful control of the plasma parameters produced a dry polymerised coating with functional chemistry designed to enhance the adhesion of silicone sealants to two substrates. This paper describes the surface chemistry and adhesion properties of various coatings on both a plastic and a metal substrate. Selected surface analysis techniques were coupled to both wet and dry adhesion testing to characterise the factors that control adhesion within the system. Mechanical testing indicates that adhesion was improved by several orders of magnitude.
    The Journal of Adhesion 06/2008; 84(6):562-577. · 0.86 Impact Factor
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    ABSTRACT: This study reports on the deposition of nanometre thick siloxane coatings on a poly(ethylene terephthalate) (PET) film using a reel-to-reel atmospheric pressure plasma system. Coatings were deposited in a helium/oxygen plasma, from the siloxane precursors poly(dimethylsiloxane), tetraethylorthosilicate, octamethylcyclotetrasiloxane and hexamethyldisiloxane. Through control of the processing conditions the chemistry of the deposited coatings were tailored to provide a range of hydrophilic (SiOx type) and hydrophobic [SiO(CH3)x] surfaces. The silicon-containing coating surface energies were in the range of 28–70 mN · m−1 and these values were correlated with the surface chemistry. An increase in the hydrophilicity of the coating was found to be associated with a decrease in the concentration of methyl functional groups.
    Plasma Processes and Polymers 01/2007; 4:S450-S454. · 3.73 Impact Factor
  • Chemical Vapor Deposition 12/2005; 11(11‐12):477 - 479. · 1.32 Impact Factor