Abstract
The porous nanocomposites consisting of starch and sepiolite were prepared by a solvent exchange technique, i.e. replacing ice crystals in frozen sepiolite/starch gel with ethanol. The influence of sepiolite contents on pore size, apparent density, moisture adsorption, oil adsorption capacity and dye adsorption of porous sepiolite/starch composites (SPPSs) was investigated. The addition of sepiolite reduced pore size, apparent density and moisture adsorption of SPPSs. The oil adsorption and the methylene blue adsorption of SPPSs could respectively reach 10.1 g/g and 2.07 mg g-1 at the maximal, while those of PS were only 5.83 g/g and 1.55 mg g-1.
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