Dissolution of bacterial cellulose in ionic liquids
Bacterial cellulose (BC) is a kind of cellulose produced by bacteria, and it is one of the most promising biomaterials with broad prospective applications. Few results on dissolving BC were reported. LiCl/DMAC solvent system is the mainly used method, but this method is expensive, and is only limited in lab research. In order to find more efficient and relatively cheap solvents, the dissolution of BC in ionic liquids of 1-allyl-3-methylimidazolium chloride AMIMCl and 1-butyl-3-methylimidazolium chloride BMIMCl were investigated in this study. Different BC types (dry or wet), different dissolution temperatures and different types of regenerating reagents for BC regeneration were utilized to evaluate the dissolution and regeneration properties of BC. The results showed that freeze-dried BC was more easily dissolved than gel-like wet BC; the maximum solubility was 3% (w/v). The optimal dissolution temperature was determined. When deionized water was used as regenerating reagent, a BC suspension solution was obtained. The BC could be harvested by centrifugation and the ionic liquids could be recovered by rotary evaporation to remove water.
LI Peng HONG Feng
Group of Microbiological Engineering and Industrial Biotechnology, Institute of Biology Science an Group of Microbiological Engineering and Industrial Biotechnology, Institute of Biology Science an
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
940-942
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）