摘要
Abstract
Plant cellulose is a natural renewable resource,and application of the modified cellulose has been a research focus. The structure and properties of cellulose are described , and cellulose modification methods are reviewed,including physical,chemical and biological methods. The main method is chemical modification , including esterification , sulfonation , etherification , ether esterification,crosslinking and graft copolymerization,which involve the reactions of hydroxyl groups in the cellulose. Hydrophilcity of cellulose could be enhanced by introduction of ionic groups. Compared with non-modified cellulose , crystallinity and degree of polymerization of modified cellulose decrease significantly,whereas accessibility is improved remarkably,with superior physical and chemical properties. Finally,the research achievements of cellulose derivatives in food,paper and construction industries are reviewed. Research progresses in pharmaceuticals,wastewater treatment and other areas are presented. Future applications of cellulose derivatives are prospected.关键词
纤维素/纤维素衍生物/化学改性Key words
cellulose/cellulose derivatives/chemical modification分类
化学化工
