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2008
Journal Article
Titel
Plasma amination of low-density polyethylene by DBD afterglows at atmospheric pressure
Abstract
Surfaces of LDPE can be functionalized with primary amino groups using the afterglows from dielectric barrier discharges in N2, N2 + H2, and N2 + NH3 mixtures at atmospheric pressure. Quantitative analysis by a recently developed ATR FT-IR spectroscopic method allows calculation of the number of NH2 groups generated per unit area. Treatment in N2 + H2 afterglows was found to be most efficient in terms of area densities of primary amines achieved (more than 15 nm-2), but appreciable quantities of NH2, up to about 3 nm-2, are also obtained in pure N2. Possible mechanisms of the amination reaction and the roles of gas additives are discussed.