球磨-酶解法制备纳米竹纤维的结构表征  

Characterization of nano-bamboo cellulose by ball milling and enzyme hydrolysis preparation

作　　者：费鹏[1] 蔡杰[1] 熊汉国[1] 

机构地区：[1]华中农业大学食品科技学院,华中农业大学农林生物基材料综合利用研究所,武汉430070

出　　处：《林业科技开发》2012年第2期16-19,共4页China Forestry Science and Technology

基　　金：湖北省重点攻关项目(编号:206873A22);武汉市产业化项目(编号:201120722218)

摘　　要：采用机械球磨对竹纤维进行预处理,再经纤维素酶水解制备纳米竹纤维。通过光学显微镜(OM)、透射电子显微镜(TEM)、傅立叶红外光谱仪(FTIR)和X射线衍射仪(XRD)对竹纤维的形貌、组成、光谱学性能以及晶体特性进行了表征。实验结果表明:球磨法和酶解法在一定程度上都可以细化竹纤维;球磨预处理有助于竹纤维的酶解过程,且球磨-酶解法制备的纳米竹纤维粒径在100 nm左右;所制备的纳米竹纤维仍然保持竹纤维的基本化学结构,但球磨处理破坏了纤维素的结晶结构,其结晶度由64.15%降低到了38.55%。The article reported the characteristics of nano-bamboo cellulose from enzymolysis of bamboo fibers pretreated by ball-milling dispersion.The size and morphology,crystallinity and spectral properties of the prepared nano-bamboo cellulose were characterized by optical microscopy（OM）,transmission electron microscopy（TEM）,fourier transform infrared spectroscopy（FTIR） and X-ray diffraction（XRD）.The results showed that both ball-milling and enzymolysis could thin bamboo fibers to some degree.The ball-milling pre-treatment contributed much to the enzymolysis of bamboo fibers.The diameter of nano-bamboo fiber was about 100 nm after mill-enzymatic preparation.Although the basic chemical structure and crystal form of cellulose of nano-bamboo fiber were kept,the crystallinity decreased from 64.15% to 38.55%.

关 键 词：球磨 酶解 纳米竹纤维 表征 

分 类 号：TS214.2[轻工技术与工程—粮食、油脂及植物蛋白工程]