酸法制备杨木微/纳纤丝及其表征  

Preparation and Characterization of Poplar Micro/nano Fibrils by Acid

作　　者：刘艳萍[1] 张洋[1] 吴羽飞[1] 李文定[1] 刘聪[1] 

机构地区：[1]南京林业大学木材工业学院,南京210037

出　　处：《高分子通报》2010年第2期112-115,共4页Polymer Bulletin

基　　金：国家科技支撑计划项目(2006BAD07A07-04);江苏省农业科技攻关项目(BE2007326)

摘　　要：近二十多年来，如何从天然纤维素中分离微／纳纤丝和用其来增强高分子聚合物受到许多学者的关注。本研究以杨木纤维素为原料，采用硫酸和盐酸的混合液水解、恒温水浴振荡处理制备杨木微／纳纤丝。利用扫描电子显微和X射线衍射仪对制备的杨木微／纳纤丝进行分析表征，结果表明当酸处理条件为杨木纤维3g、浓H2SO4体积分数为15％、浓HCl体积分数为5％、恒温水浴60℃、振荡8h，可得到杨木微／纳纤丝，杨木微／纳纤丝宽度分布在200nm到1μm之间，长宽比约60～120，相度结晶度为77．59％。For two decades,many researchers have been devoted to isolating micro/nanofibrils from natural cellulose and using them to reinforce polymers. The sulfuric acid and hydrochloric acid were used to make the miero/nano fibrils from poplar fiber. The micro/nano fibrils was characterized by scanning electron microscopy （SEM） and X-ray diffraetometer （XRD） . The results indicated that the distribution of width for the micro/nano fibrils was from 200 nm to 1μm, length/width ratio was 60- 120 and its crystallity was 77. 59% when the volume fraction of sulfuric acid was15%, the volume fraction of hydrochloric acid was 5%, temperature was 60℃ and the time of treatment was 8h.

关 键 词：杨木 微/纳纤丝 混合酸 

分 类 号：TB332[一般工业技术—材料科学与工程]