Preparation of TiO2 thin films on polystyrene by liquid phase deposition

Abstract

Polystyrene (PS) substrates were functionalized by wet chemical grafting with 2-acrylamido-2-methylpropane-1sulfonic acid (AMPS). Subsequently, TiO 2 thin films were prepared by liquid phase deposition (LPD) with an average growth rate of 85 nm h 21 ; a maximum thickness of 750 nm was observed in our experiments. The crystalline fraction of the precipitated material was estimated to be 58% by X-ray powder-diffraction. Significantly improved film adhesion was achieved on grafted substrates, as compared to non-functionalized polymers, due to the formation of a thin, coherent primer layer in the early stages of mineralization.

Low temperature coating of anatase thin films on silica glass fibers by liquid phase deposition

“…An understanding of the deposition mechanism on self-assembled monolayers has been described [7] .Recently, it has been shown that planar polystyrene substrates [8] and even polymer microcapsules [9] can be coated by LPD. These results indicate that LPD should be a viable method for TiO 2 thin fi lms formation on the curved surface of fi brous materials.…”

Microstructure-controlled synthesis of oriented layered double hydroxide thin films: Effect of varying the preparation conditions and a kinetic and mechanistic study of film formation

“…There has been some work reported on the use of surface modified polymers such as sulfonated polystyrene as substrates for ceramics such as (0 0 l) oriented calcium carbonate (Addadi et al, 1987), (0 2 0) oriented goethite ( -FeOOH) or titanium dioxide (Dutschke et al, 2003). In a previous preliminary communication, we have shown that oriented dense thin films of Mg 2+ /Al 3+ -carbonate LDHs (Mg 4 Al 2 (OH) 12 (CO 3 ) · 4H 2 O, MgAl-LDH) may be grown on sulfonated polystyrene substrates with the (0 0 l) planes of the LDH platelets perpendicular to the surface of the substrates (Lei et al, 2005).…”

Nano/Micro Patterning of Inorganic Thin Films

“…These can react with the silanes and form a SAM, which is basic for patterning using the method for ceramics. Recent progress in this area involves preparation of an intermediate active layer, a silica-like layer as thin as molecular scale on the surface of polymers, by either chemical grafting [229][230][231][232][233][234][235] or physical deposition.…”

“…Typically, these problems are overcome by increasing the surface energy of the materials through introducing polar functionality by either physical (X-ray, laser, ion beam, plasma treatment, or flame treatment) [218][219][220][221][222][223][224][225][226][227][228] or chemical surface modification. [229][230][231][232][233][234][235] Plasma treatment using different gases produces different reactive radicals. Oxygen creates hydroxy, carbonyl, carboxyl, ester, ether, and hydroperoxyl functional groups, among others.…”