イオン液体含浸バクテリアセルロース膜の調製

概要

論文の詳細を見る
Cellulose, the main component of plant cell walls, is the most abundant biopolymer on earth and one of the most exploited natural resources. It is also produced by bacteria. Bacterial cellulose (BC) is generated by Gluconacetobacte xylinum as a three-dimensional network of nano- and microfibrils of cellulose with 10-100 nm diameters, which possesses unique physical and mechanical properties. So in comparison with cellulose from plants, BC has a higher mechanical strength, porous property, purity and absorbency. In this study, cultured BC was used as a supported material of supported ionic liquid membranes (SILM) which have been proposed as effective methods for the selective separation between different chemical species in dilute streams. BC membranes were generated sufficiently at 2.0 to 2.5 g/dl glucose concentration in culture media. From the electron microscopic pictures, BC membranes were found to be successfully impregnated with the hydrophobic ionic liquid, Aliquat 336 (N-methyl-N,N- dioctyloctan-1-octanaminium chloride) and the hydrophilic ionic liquid, [C_4mim][Cl] (1-butyl-3-methylimidazolium chloride). Finally, lactic acid permeation was examined with these supported ionic liquid membranes.