Solventless attachment of long-chain molecules to poly(ethylene-alt-maleic anhydride) copolymer surfaces

Article Abstract:

Vapor phase chemical functionalization was performed on poly(ethylene-alt-maleic anhydride) copolymer surface using 2,2,2-trifluoroethylamine and a Jeffamine D30. This methodology creates a half-amide attachment and is observed to proceed almost 100% conversion and is an effective means for linking amine terminated long-chain molecules to solid surfaces with anhydride centers. To prove adequate coverage of the substrate by the copolymer, X-ray photoelectron spectroscopy was employed. The results are discussed.

Analysis, X-ray spectroscopy, Molecules

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Plasmachemical dehydroxylation of high surface area silica at room temperature

Article Abstract:

(Super 1)H nuclear magnetic resonance, temperature programmed desorption and optical emission spectroscopy helped in studying the changes in hydroxyl population and distribution within silica particles. Results indicate that the CF4 plasma treatment at room temperature is equivalent to a 773 K thermal activation in terms of the total hydroxyl population on the silica surface.

Industrial sand, Silica & Silica Sand, Industrial Sand Mining, Silica, Nuclear magnetic resonance

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Surface esterification of poly(ethylene-alt-maleic anhydride) copolymer

Article Abstract:

The surface esterification of poly(ethylene-alt-maleic anhydride) copolymer is explored using a range of alcohols with increasing nucleophilicities, that is, 2,2,2-trifluoroethanol, 4,4,4-trifluorobutano, and ethanol. Modification of polymer surfaces is useful for tailoring substrate wettability, permeability, biocompatibility, and adhesion.

Observations, Photoelectron spectroscopy, Copolymers, Esterification

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