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US 2013/0011459 A1Published application
Composite for Controleed Release of Small Molecules in Aquatic Environments
AssigneeNaval Research Laboratory
InventorsBrian Melde, Michael A. Markowitz
Life of this patent
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Abstract
A composite material formulated for slow release of a small molecule in seawater includes a porous inorganic oxide framework and micelles embedded within the pores of the framework. The micelles include a surfactant and a small molecule, the surfactant being present in the composite material at no more than 80 parts by weight per 100 parts by weight inorganic oxide, the composite material being stable in seawater for releasing the small molecule over at least 20 days.
Claims9
A method for preparing a composite material comprising:
- providing a liquid source of an inorganic oxide;
- hydrolyzing the liquid source of an inorganic oxide in a polar solvent to form a sol;
- incorporating a surfactant and a small organic molecule with molecular weight of less than 1000 in the sol, the surfactant being present in the sol at no more than 80 parts by weight per 100 parts by weight of inorganic oxide;
- and
- solidifying the sol to form the composite material incorporating the inorganic oxide in a porous inorganic oxide framework and in which the small molecule and surfactant are present in pores of the framework.
2 more elements
A method for preparing a composite material comprising:
- providing a liquid source of an inorganic oxide;
- hydrolyzing the liquid source of an inorganic oxide in a polar solvent to form a sol;
- incorporating a surfactant and a small organic molecule with molecular weight of less than 1000 in the sol, the surfactant being present in the sol at no more than 80 parts by weight per 100 parts by weight of inorganic oxide;
- and
- solidifying the sol to form the composite material incorporating the inorganic oxide in a porous inorganic oxide framework and in which the small molecule and surfactant are present in pores of the framework,
- wherein a ratio of moles of silica derived from bis(trimethoxysilylethyl)benzene:moles silica derived from tetramethyl orthosilicate in the silica framework is at least 30:70, and
- wherein the small organic molecule is an anti-foulant.
4 more elements
Dependencies are inferred from the claim text.