A NEXAFS examination of unsaturation in plasma polymers of allylamine and propylamine

Article Abstract:

Near edge X-ray absorption fine structure (NEXAFS) is employed to provide insight in toy the chemical nature of nitrogen in deposits formed from plasmas of allylamine and propylamine. The findings indicate that there is a substantial level of dehydrogenation during the plasma polymerization process resulting in the formation of imine groups and, at high power, nitrile groups in addition to sp(power 3) hybridized amines.

Science & research, Research, Extended X-ray absorption fine structure, Amines, Chemical properties

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The effect of monomer aggregation in the photopolymerization of styrenesulfonate

Article Abstract:

The polymerization of styrenesulfonate photoinitiated by visible light in the presence of dye safranine was studied using various monomer concentrations in aqueous solution. It was found that photopolymerization proceeds in the presence of air and ground state and excited state interactions as well as polymerization products suggested aggregation of the monomer containing dye molecule.

Fluorescence spectroscopy

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Molecular dynamics simulations of the polymerization of aqueous silicic acid and analysis of the effects of concentration on silica polymorph distributions, growth mechanisms, and reaction kinetics

Article Abstract:

Large-scale molecular dynamics simulations of the polymerization of silicic acid in aqueous solution are performed using potential developed by Fueston and Garofalini. It is concluded that the initial stages of the polymerization process are dominated by the addition of monomers to dimers and addition of monomers to small clusters.

Molecular dynamics, Atomic properties, Silicides

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