Surface properties of glass

Recently systematic studies of the surface properties of glass and other insulators have been made after bombardment with ions in the 40 to 100 keV range. Refractive index modifications were observed which are caused by phase changes, micropo-... 

Liang L, Feng X, Liu J et al. Reversible surface properties of glass plate and capillary tube grafted by photopolymerization of N-isopropylacrylamide. Macromolecules 1998 31 7845-7850. 

Holland, L., The Properties of Glass Surfaces, Chapman Hall (1964)... 

Deposition of thin films is used to change the surface properties of the base material, the substrate. For example, optical properties such as transmission or reflection of lenses and other glass products, can be adjusted by applying suitable coating layer systems. Metal coatings on plastic web produce conductive coatings for film capacitors. Polymer layers on metals enhance the corrosion resistance of the substrate. 

Abstract— The use of organosilanes as adhesion promoters for surface coatings, adhesives and syntactic foams is described and reviewed in the light of published work. Data are presented on the beneficial effect of silanes, when used as pretreatment primers and additives, on the bond strength of two pack epoxide and polyurethane paints applied to aluminium and mild steel. It is shown that silanes when used as additives to structural epoxide and polyurethane adhesives are less effective than when used as pretreatment primers on metals but are highly effective on glass substrates. The compressive properties of glass microballoon/epoxide syntactic foams are shown to be markedly improved by the addition of silanes. 

The isotherms on silane-treated surfaces are different from one another, considering the precision of the method, but these differences are minor, and are not worthy of detailed analysis. The main inference from analysis of physical adsorption is that silane deposition mitigates the sorptive properties of glass substrates, which is in accord with results of previous work [2-5]. This trend also correlates with results from water thermodesorption, which demonstrate that water-sized glass has the highest sorptive capacity for water, while silane-treated samples exhibit diminished sorptive properties. 

To replace glass, a plastic substrate must offer the properties of glass, i.e. clarity, dimensional stability, thermal stability, barrier, solvent resistance, low coefficient of thermal expansion, and a smooth surface. No plastic film has all these properties so any plastic based substrate will almost certainly be a multilayer composite structure. In addition to choosing the right materials for the different layers, one now has a new set of issues associated with the properties of multilayer structures. These issues include the adhesion of the different layers, the effect of thermal and environmental cycling, and the effect of flexing the structure, not only on specific... 

The Physical Properties of Glass Surfaces by L. Holland, John Wiley Sons, Inc., New York, 1964. A very intensive examination of all aspects of glass surfaces, from damage to cleaning to chemistry. 

Another inherent property of glass is the tendency of unprotected fiber surfaces to abrade each other to destruction under the action of... 

The selection of polymer is critical to the performance, properties, and application of nanoparticles. Further, the physicochemical properties of the polymer will determine the surface properties of nanoparticles with polymer molecular weight, hydro-phobicity, and glass transition temperature being particularly important. The surface properties that influence their biodistribution and cellular response include particle size, zeta potential, and surface hydrophilicity. 

Work undergone in this area has looked at tensile and impact properties of a PVC composite filled with hollow glass beads, of three different sizes, and different volume fractions (96). The influence of particle shape and silane coupling agents, for surface treatment of glass beads, on mechanical properties has also been investigated (116, 366). 

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