桉木浆纳/微米和脱脂棉纳米纤维素的形貌分析  

Morphology Analysis of Nano-Microcrystalline Cellulose from Eucalyptus Pulp and Cotton Nanocrystalline Cellulose

作　　者：刘志明[1] 谢成[1] 方桂珍[1] 卜良霄[1] 刘黎阳[1] 郭盼龙[1] 李振雷[1] 

机构地区：[1]东北林业大学材料科学与工程学院生物质材料科学与技术教育部重点实验室,黑龙江哈尔滨150040

出　　处：《生物质化学工程》2011年第2期5-8,共4页Biomass Chemical Engineering

基　　金：国家自然科学基金资助(31070633);中央高校基本科研业务费专项资金资助(DL09CB08);国家级本科生创新性实验项目(101022522)

摘　　要：用环境扫描电子显微镜和透射电子显微镜表征了桉木浆纳/微米和脱脂棉纳米纤维素的形貌。环境扫描电子显微镜观察桉木浆纳/微米和脱脂棉纳米纤维素表面形貌不同,桉木浆纳/微米纤维素主要呈棒状,长度小于20μm,直径可达0.377μm;脱脂棉纳米纤维素主要呈球状,长度小于0.5μm。利用环境扫描电子显微镜,脱脂棉纳米纤维素超声波破碎后直接观察和再经冷冻干燥后观察表面形貌有一定的差异。透射电子显微镜观察桉木浆纳/微米纤维素和脱脂棉纳米纤维素的长度可达到纳米级。The morphology of microcrystalline cellulose（MCC） or nanocrystalline cellulose（NCC） from eucalyptus pulp and dewaxed cotton NCC were characterized by means of an environmental scanning electronic microscope（ESEM） and transmission electronic microscope（TEM）,respectively.The surface morphology of nano-microcrystalline cellulose（N-MCC） from eucalyptus pulp is different from that of NCC from dewaxed cotton.The surface morphology of eucalyptus pulp N-MCC is rod-like with less than 20 μm of length,but the diameter of the N-MCC could reach up to 377 nm.The surface morphology of dewaxed cotton NCC is spherical-like with less than 500 nm in length.For the surface morphology of the dewaxed cotton NCC,there is a little difference after ultrasonic crushing between direct and freeze-dried observation with ESEM.The lengths of celluloses from eucalyptus pulp and dewaxed cotton could be reached up to nanometer grade.

关 键 词：脱脂棉 纳米纤维素 桉木浆 形貌 

分 类 号：TB383.1[一般工业技术—材料科学与工程]