AFM和XPS结合在化学浆和机械浆纤维表面分析中的应用  

The Application of AFM and XPS to the Analysis of Fiber Surface of Chemical and Mechanical Pulp

作　　者：雷晓春[1] 赵宇[2] 

机构地区：[1]杭州电子科技大学,浙江杭州310018 [2]浙江理工大学,浙江杭州310018

出　　处：《中国造纸学报》2009年第2期110-114,共5页Transactions of China Pulp and Paper

摘　　要：较全面地介绍了原子力显微镜(AFM)与化学分析电子能谱(XPS)结合用于化学浆和机械浆纤维表面分析的情况。分析表明,组成纤维表面的多种物质之间的吸引和排斥作用导致纤维表面的多孔性。关于AFM图像中纤维表面的球状颗粒和片状结构的解释存在着很大的不同,AFM相图中明暗对照的解释,以及明暗对照与纤维表面的亲水性、疏水性和软硬黏弹性之间的关系尚没有明确的解释。The detailed analysis of the fiber surface of chemical and mechanical pulps based on the combined methods of AFM （ Atomic Force Microscope） and XPS （or ESCA, Electron Spectroscopy for Chemical Analysis） was discussed. The results showed that the heterogeneous fiber surface presents a multi-hole structure as a result of the repulsion and attraction effects between different materials on the surface. The diameter of the bundle of microfibrils of the kraft pulp is in the range of 0. 04 - 0. 125 μm, and individual microfibrils are with a diameter of 0. 01 - 0. 03 μm. In nature wood the diameter of the cellulose aggregation is 0.018 μm, however the diameter increases to 0. 023 μm after chemical pulping process. Great amount of spherical grains of extraetives covers on the carbohydrate and lignin, and lignin exists on the fiber surface in the irregular flake form. On the other hand, great number of hemi-eellulose, extractives and lignin appear on the CTMP fiber surface, which makes it rough and chemically heterogeneous. Therefore, CTMP fiber surface has its properties such as non-cellulose, hydrophobicity and low elasticity, namely high stiffness. Moreover, the elasticity can increase when compound substance is formed from lignin with hemi-cellulose and extraetives. Unbleached PGW and TMP fiber surface appear to be a structure with grain and fibrils, and unbleached CTMP fiber surface is almost covered with granules. It is not in agreement in the explanation about the spherical grains and flake structure, and also there is not reasonable explanation about the contract of the AFM phase image, hydrophilieity and the elasticity of fiber surface, thus, further research is necessary.

关 键 词：原子力显微镜 化学分析电子能谱 化学浆 机械浆 表面分析 

分 类 号：TS71[轻工技术与工程—制浆造纸工程]