AI Article Synopsis
- Neutron reflection was used to study how alpha-enriched gelatin adsorbs onto spun polystyrene from water, revealing details about the material's distribution and total amounts at the interface.
- The research showed that adsorbed layers had maximum density at the surface, which decreased with depth into the solution, and that both the thickness and density of these layers increased with higher gelatin concentrations.
- While temperature had minimal impact, the pH affected layer characteristics, with thicker, less dense layers at high pH and thinner, denser layers at low pH, though the overall amount of adsorption remained largely unchanged.
Article Abstract
The technique of neutron reflection has been used to investigate the adsorption of alpha-enriched gelatin from aqueous solution onto spun polystyrene substrates. Neutron reflection can provide information about the distribution of material perpendicular to an interface as well as total adsorbed amounts. The adsorbed layers were found to have maximum density at the surface, decaying with distance into solution. The adsorbed amount, layer thickness, and density were all seen to increase with solution concentration. Temperature was found to have little effect on adsorption. Thicker, less dense layers were observed at high pH and thinner, denser layers were observed at low pH, but the total adsorbed amount did not change significantly. The presence of sodium chloride had little effect on the adsorbed layers. The results are discussed in the context of other studies and the known amino acid sequence of alpha-gelatin.
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| http://dx.doi.org/10.1021/la050256o | DOI Listing |
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