Abstract
This paper demonstrates the preparation of transparent regenerated membrane from bacterial cellulose (BC) sheets using the lithium chloride（LiCl）/dimethylacetamide (DMAc) as dissolved system. The structure of the membrane was investigated by the scanning electron microscopy (SEM). It showed very smooth, dense and homogeneous surface while the raw BC sheet was poriness. FT-IR spectroposcopic analysis of both bacterial cellulose and the transparent membrane revealed that chemical composition was not changed during the fabrication process but only the peak strength changed. Mechanical property tests presented that after regeneration process, the tensile strength of the regenerated membrane was well improved compared with the raw BC sheets. Its light transmission was also attaining 91.2% due to the nano-scale structure. From the above，these properties make the transparent regenerated BC membrane potentially applied in optical electronic and packaging fields as the commercially available material.
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