扫描热显微镜技术在生物质微观特性研究中的应用  

Micro Characteristics of Biomass Investigated by Scanning Thermal Microscopy

作　　者：徐德良[1,2] 付鑫[1] 徐朝阳[1] 王思群[2] 孙军[1] 周定国[1] 

机构地区：[1]南京林业大学材料科学与工程学院,江苏南京210037 [2]美国田纳西大学再生炭中心,田纳西州诺克斯维尔379964570

出　　处：《林产化学与工业》2015年第4期1-7,共7页Chemistry and Industry of Forest Products

基　　金：'十二五'国家科技支撑计划资助(2012BAD24B0304);江苏省自然科学基金(BK20130971);江苏省高等学校大学生创新创业训练计划(201410298017Z)

摘　　要：为了探讨生物质材料微观导热性能,以红橡和稻草为研究对象,使用扫描热显微镜技术(SThM)研究2种生物质材料细胞壁层级的微观传热特性及微观结构特性。研究结果表明,SThM的热传导模式可以对生物质细胞结构进行较好的扫描成像,2种生物质细胞壁在横切面的导热特性近似,即细胞壁的胞间层(CML)导热性能明显低于S2层导热性能,电流值相差1μA左右。The application of scanning thermal microscopy （SThM） technique in the studies of bio-composites interface characteristics and the thermal conductivity characteristics in micro-scale of biomass materials was discussed using red oak and rice straw cell as research objects. The results indicated that the thermal conductivity mode of SThM could imaged the microstructure of biomass cell very well, and the thermal conductivity characteristics of these two biomass were similar. This showed that the thermal conductivity of $2 layer was higher than that of middle lamella of cell wall（CML）.

关 键 词：扫描热显微镜技术 稻草 红橡 细胞壁 传热特性 

分 类 号：TQ35[化学工程] TK6[动力工程及工程热物理—生物能]