原子力显微镜技术在木陶瓷分析中的应用  

Application of Atomic Force Microscopy to Analysis of Woodceramics

作　　者：李淑君[1] 陶毓博[1] 李坚[1] 刘一星[1] 

机构地区：[1]生物质材料科学与技术教育部重点实验室(东北林业大学),哈尔滨150040

出　　处：《东北林业大学学报》2009年第10期44-46,共3页Journal of Northeast Forestry University

基　　金：国家自然科学基金项目(30500385);新世纪优秀人才支持计划项目的部分内容(NCET-05-0329)

摘　　要：将原子力显微镜技术应用于木陶瓷分析,观测了大青杨木材和酚醛树脂炭化前后样品表面的微观形态。结果表明,通过原子力显微镜技术,可以清晰地观察到大青杨木材表面呈波纹状排列有序的纤维物质,波纹峰谷间水平距离390.63nm,垂直距离14.745nm。炭化后该结构消失,样品的粗糙度大大增加,均方根粗糙度由炭化前的4.487nm增加到炭化后的68.147nm。未炭化酚醛树脂因固化时水分的逸出,留下类似火山口状的峰谷,谷宽437.60nm,谷深22.202nm。炭化后该结构完全消失,样品的均方根粗糙度由炭化前的4.612nm增加到50.446nm。The micromorphological characteristics of Populus ussuriensis sapwood and phenol-formaldehyde （PF） resin samples before and after carbonization were studied by applying atomic force microscopy （AFM） to analysis of woodceramics. By this method, fibrous matter, arranged orderly in the shape of wave, was observed on the wood surface. Results showed that the horizontal distance between adjacent peak and valley was 390.63 nm and the vertical distance was 14.745 nm. After carbonization, the wave structure disappeared and the roughness increased obviously. The root mean square （RMS） roughness was 4. 487 nm before carbonization and 68. 147 nm after carbonization. Lots of crater pores were observed in the PF resin samples because of water being released during resin curing. The scanned pore was 437.60 nm in width and 22. 202 nm in depth. The crater porous structure was totally disappeared after carbonization and its RMS roughness increased from 4. 612 nm （before carbonization） to 50.446 nm.

关 键 词：原子力显微镜 木陶瓷 大青杨边材 酚醛树脂 

分 类 号：TB332[一般工业技术—材料科学与工程] TH742.9[机械工程—光学工程]