Nitrogen plasma surface modification enhances cellular compatibility of aluminosilicate glass

Kaklamani, Georgia; Mehrban, Nazia; Bowen, James; Dong, Hanshan; Grover, Liam and Stamboulis, Artemis (2013). Nitrogen plasma surface modification enhances cellular compatibility of aluminosilicate glass. Materials Letters, 111 pp. 225–229.

DOI: https://doi.org/10.1016/j.matlet.2013.08.108

Abstract

The effect of Active Screen Plasma Nitriding (ASPN) treatment on the surface-cellular compatibility of an inert aluminosilicate glass surface has been investigated. ASPN is a novel surface engineering technique, the main advantage of which is the capacity to treat homogeneously all kind of materials surfaces of any shape. A conventional direct current nitriding unit has been used together with an active screen experimental arrangement. The material that was treated was an ionomer glass of the composition 4.5SiO₂-3Al₂O₃-1.5P₂O₅-3CaO-2CaF₂. The modified glass surface showed increased hardness and elastic modulus, decreased surface roughness. The incorporation of nitrogen-containing groups was confirmed using X-ray photoelectron spectroscopy. The modified surface favoured attachment and proliferation of NIH 3T3 fibroblasts.

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