棉浆粕纤维素的超声波处理  

Ultrasonic Treatment of Cotton Pulp Cellulose

作　　者：李松晔[1] 刘晓非[1] 庄旭品[1] 管云林[1] 成国祥[1] 

机构地区：[1]天津大学材料科学与工程学院,天津300072

出　　处：《应用化学》2003年第11期1030-1034,共5页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助项目 ( 5 0 173 0 19)

摘　　要：用超声波对棉浆粕纤维素进行活化处理 ,通过SEM、FTIR、WAXD研究了处理前后纤维素的形态、结构和结晶性能 ,并观测了其溶解情况和降解情况。结果表明 ,超声波作用能有效地破坏纤维素分子中的氢键 ,降低其结晶程度和规整度 ,而且能提高纤维素在LiCl/DMAc溶剂体系中溶解性能的同时基本不造成降解。对超声波处理纤维素的作用机理进行了初步探讨。Cotton pulp cellulose was treated by ultrasonic wave. The DP, morphology, structure and crystal performance of the original and treated cellulose sample were characterized by viscosimetry, SEM, FTIR and WAXD. The result shows that the ultrasonic wave decreases the crystallinity of cellulose destroying the intermolecular hydrogen bonding effectively and improves the dissolution of cellulose, but does not cause degradation. The surface apperance of cellulose also changed after ultrasonic treatment. The mechanism of activation of ultrasonic wave was discussed primarily.

关 键 词：纤维素 超声波处理 氢键 结晶程度 

分 类 号：O644.3[理学—物理化学] O636.11[理学—化学]