アルコール選択性分離膜の研究開発
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概要
- 論文の詳細を見る
Alcohol selectivity through the membranes, prepared from hydrophobic polymers by dry-jet-wet spinning method, have been studied. Volatile organics are possible to permeate through the dried hydrophobic membranes and their permeabilities are in proportion to the partial vapor pressures. Such membranes permit preferential permeation of alcohols when their mean pore radii are greater than the radii of alcohol molecules. Ethanol solution can be concentrated from the dilute solution to the concentrated against the concentration gradient with such membranes by direct contact membrane distillation type separation. Selectivities for alcohols through a PVdF membrane can be increased higher than the relative volatilities by thin coated layer of polymers such as silicone, or heat treatment.
- 日本膜学会の論文