蒙脱土处理木纤维的表面性状及吸湿性  

Surface Performance and Moisture Adsorption of Wood Fiber Modified with Montmorillonite

作　　者：欧阳靓[1,2] 曹金珍[1,2] 罗文圣 

机构地区：[1]北京林业大学材料科学与技术学院 [2]木质材料科学与应用教育部重点实验室,北京100083 [3]北京盛大华源科技有限公司,北京100070

出　　处：《木材工业》2014年第3期13-16,21,共5页China Wood Industry

基　　金：中央高校基本科研业务费专项资金“北京林业大学杰出青年人才培育计划/科技创新团队”(TD2011-14);木竹产业技术创新战略联盟科研计划“高防潮型纤维板生产技术”(2013)

摘　　要：采用钠基蒙脱土(Na-MMT)和季铵盐(DDAC)两步处理法改性木纤维,并检测改性纤维的吸湿性、接触角,并对其结构、基团变化、形态进行表征分析。结果表明:改性纤维的吸湿率降低,接触角增加;Na-MMT与DDAC在木纤维内部反应生成OMMT,在纤维细胞壁形成有效插层,且与纤维中的化学组分发生结合。为纤维板尺寸稳定处理提供一种新方法。Sodium-montmorillonite （Na-MMT） and quaternary ammonium salt （DDAC） were sequentially used to modify wood fibersto improve dimensional stability of MDF. The moisture adsorption and contact angles of the modified fibers were investigated and the fiber structure, surface groups and morphology were also characterized. The results showed that the moisture absorption rate of the fibers decreased and the contact angles increased after modification. Organic montmorillonitewas formed through reactions between Na-MMT and DDAC and then was intercalated into the cell wall and was further reacted with chemical components of the fibers.

关 键 词：木纤维 钠基蒙脱土 有机蒙脱土 改性 吸湿性 

分 类 号：TS653.6[轻工技术与工程]