Molecular mobility in amorphous maltose and maltitol from phosphorescence of erythrosin B

Article Abstract:

Phosphorescence from erythrosin B dispersed in amorphous thin films of maltose and maltitol at more ratios of 0.8:10(super 4) dye:sugar is used to monitor the molecular mobility of these matrixes over the temperature range from -25 to over 110 degree Celsius. The mobility of these similar molecules displays distinct behavior within the glass and around the glass transition temperature and that interactions between sugar and sugar alcohol actually lower the molecular mobility within the glassy state in mixtures.

Observations, Sugars, Disaccharides, Phosphorescence

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The effects of film structure and surface hydrogen on the properties of amorphous carbon films

Article Abstract:

The mechanical and the tribological properties of amorphous carbon thin films with and without surface hydrogen are investigated by using molecular dynamics simulations. The three dimensional arrangement of atoms within the film is a very important factor while determining the mechanical and tribological properties of a film.

Usage, Carbon, Mechanical properties

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Compression- and shear-induced polymerization in model diacetylene-containing monolayers

Article Abstract:

Molecular dynamics simulations are used to examine the response of monolayers composed of alkyne chains, which contain diacetylene moieties, to compression and shear. The simulations show that both compression and shear result in cross-linking, or polymerization, between chains.

Petroleum Refineries, Petroleum refining, Industrial Organic Chemicals, Cyclic Crude and Intermediate Manufacturing, Polymerization, Alkynes, Methods, Addition polymerization

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