植物纤维基发泡材料中有机—无机两相杂化效果表征  

Characterization of organic-inorganic two phase's hybridized effect in plant fiber-based foam materials

作　　者：吴振增 魏起华[1] 谢拥群[1] 牛敏[1] 庄清平 陈汀杰 

机构地区：[1]福建农林大学材料工程学院,福建福州350002

出　　处：《福建林学院学报》2014年第3期283-288,共6页Journal of Fujian College of Forestry

基　　金：国家自然科学基金(30871982);国家科技支撑课题(2008BADA9B01);福建省产学重大项目(2013H6004)

摘　　要：植物纤维基发泡材料是以植物纤维和几种胶粘剂成分为有机相,硅铝化合物为无机相,在液体发泡环境中制备出的一种有机—无机杂化材料。为考察材料中有机—无机两相的杂化效果,采用傅里叶变化红外光谱(FTIR)、扫描电子显微镜-X射线能谱分析(SEM-EDXA)对材料的官能团、微观形貌以及无机元素在纤维基材料表面的分布情况进行分析。结果表明:在杂化材料中存在Si-O-Si和Si-O-Al化学键,并通过Si-O-Si键和Si-O-Al键在纤维中连接形成SiO2-Al2O3无机杂化相;在纤维断面由内而外Si、Al元素分布均匀,无机杂化复合体通过扩散和渗透与纤维细胞壁物质进行杂化复合,杂化后材料获得较好的热稳定。因此,硅铝无机相与纤维有机相能够建立有效的相互作用,两相界面结合效果较好。Plant fiber-based foam material is an organic-inorganic hybrid material.Plant fiber and adhesives are regarded as the organic phrase,and Si-Al compounds are called as the inorganic phrase in a liquid foam environment.To investigate the hybrid effect of the two phrases in the material,functional groups in the material,microstructure and the distribution of inorganic elements on the surface of the material was measured by a FTIR and SEM-EDXA,respectively.The results showed that：the chemical bonds Si-O-Si and Si-O-Al existed in the hybrid material and because of their reaction,the inorganic compound SiO2-Al2O3 could be finally formed.The elements Si and Al relatively uniformly distributed on the cross section from inside to outside of plant fiber.Hybrid materials got better thermal stability after being hybridized.In other words,the inorganic compounds interacted with cell wall substances of fiber by diffusion and permeation.In conclusion,Si-Al inorganic phrase can build effective interaction with plant fiber organic phrase.

关 键 词：有机—无机杂化 超轻质 植物纤维 发泡材料 

分 类 号：TB332[一般工业技术—材料科学与工程]