Coating interactions

List the types of polymer-induced forces one can expect when two particles with polymer coatings interact with each other. Discuss what factors influence the existence and the magnitude of such forces. 

Hornsby, P. R., Cusack, P. A., Cross, M., Toth, A., Zelei, B., and Marosi, G. 2003. Zinc hydroxystannate-coated metal hydroxide fire retardants Fire performance and substrate-coating interactions. Journal of Materials Science 38 2893-99. 

An investigation was carried out into the fire retardant behaviour of zinc hydroxystannate-coated fillers (alumina trihydrate and magnesium hydroxide) in PVC and EVA cable formulations. Measurements were made of the limiting oxygen index, peak rate of heat release and smoke parameter and the data for unfilled and filled formulations compared. X-ray photoelectron spectroscopy and diffuse reflectance infrared Fourier-transform spectroscopy were used to study the filler-coating interaction. 16 refs. 

Other studies have reported frequency increases for polymer-coated SAW devices upon exposure to water vapor at elevated temperatures (<80°C), consistent with a predominance of elastic stiffening of the coating [57]. At lower temperatures (25-35 C), the same sensors exhibited frequency decreases upon exposure to water vapor of the same concentration, a response consistent with mass loading. Thus, the dominant mechanism may be determined by a variety of factors, including the type of vapor-coating interactions and the ambient temperature. Note that ambient temperature can have profound effects on flim viscoelastic properties (see Chapter 4), which in turn can influence the results of vapor exposure. 

The coated samples were then oxidized for lOOOh at 800°C in air. Subsequently, the alloy/coating interaction was studied by SEM/EDX. The results in Fig. 5 illustrate that the alloy/perovskite interaction strongly depends on the contact layer composition. 

Two strategies are currently in use to improve the sensitivity and selectivity of SAW sensor systems. One involves the selection of coatings that exhibit a unique chemical selectivity for the analyte vapor. It is often observed that for a particular vapor/coating interaction, the specificity and reversibility of the interaction are inversely related. That is, highly specific interactions often involve large bonding energies that are not spontaneously reversible. Such... 

Svanhohn, E., 2007. PrintabiUty and ink-coating interactions in inkjet printing (Doctoral thesis). Karlstad University. Karlstad, Sweden. 

Somasundaram, L. and J.R. Coats. Interactions between Pesticides and Their Major Degradation Products, in Pesticide Transformation Products. Fate and Significance in the Environment, ACS Symposium Series 459, Somasundaram, L. and J.R. Coats, Eds., (Washington, DC American Chemical Society, 1991), pp. 162-171. 

Lamberigts, M., and Leroy, V. (1992). Influence of substrate-coating interactions on the micro.structure and properties of Galfan products. Galvatech 92, Verlag Stahleisen, Dusseldorf, Germany, pp. 363-367. 

Solarski S, Benali S, Rochery M, Devaux E, Alexandre M, Monteverde F, et al. Synthesis of a polyurethane/clay nanocomposite used as coating interactions between the counterions of clay and the isocyanate and incidence on the nanocomposite structure. J Appl Polym Sci November 2005 95 238-44. 

The ability to probe surfaces using in situ SERS can be exploited in polymer chemistry to characterise the surface of polymers for comparison with the bulk properties and to study polymer-metal composites such as adhesives and coatings. Interactions between adhesives and metal polymeric surfaces have been investigated [437]. The applicability of SERS to polymer surfaces has also been reported in a study on poly-/ -nitrostyrene [438], and in another study on the effects of chromic/sulfuric acid etching on PE films [439]. The desired surface sensitivity... 

Silane based coating interaction with aluminum and magnesium. 

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