细菌纤维素基磁性纳米复合材料的研究进展  

Research Advance in Magnetic Nano-composites Based on Bacterial Cellulose

作　　者：张雯[1] 陈仕艳[1] 王华平[1] 

机构地区：[1]东华大学材料科学与工程学院纤维材料改性国家重点实验室,上海201620

出　　处：《材料导报》2012年第5期134-138,共5页Materials Reports

基　　金：国家自然科学基金(NSFC51003012);高等学校学科创新引智计划(20090075120011)

摘　　要：细菌纤维素作为一种新型的生物纳米材料,不同于植物纤维素,其较高的比表面积、精细的三维纳米网状结构和表面大量的活性反应位点可以作为"模板"反应使用,通过原位复合的方法可有效地控制、合成具有预期特定形貌与尺寸且分布均匀的磁性纳米复合材料,从而获得良好的综合性能。从细菌纤维素作为"模板"制备功能化材料的机理出发,归纳总结了近年来细菌纤维素基磁性材料的研究进展,着重归纳了解决磁性膜材料的颗粒团聚问题的方法,并展望了细菌纤维素基磁性材料的发展趋势。Bacterial cellulose（BC）, different from plant celluloses, is a new kind of biological nanomaterials. BC can serve as the template to synthesize magnetic materials with specific shape and size of nanoparticles and homoge neous distribution by in situ synthesis, due to its ultrafine network architecture with a distinct tunnel and pore struc ture, higher specific surface area with a great deal of hydroxyl groups. Thus the excellent comprehensiw.＇ properties are obtained. The mechanisms of nanocomposites via in-situ synthesis of nanoparticles into BC matrix are firstly intro duced. Then the recent literature and advances of magnetic nanocomposites based on BC are summarized, with the ap- proaches to solving the aggregation of magnetic nanoparticles of the nanocomposites deeply investigated. Finally, the prospects of the flexible magnetic nanocomposites based on BC are discussed.

关 键 词：细菌纤维素 纳米磁性颗粒 原位复合 

分 类 号：O647.33[理学—物理化学]