纳米碳酸钙原位改性洋麻纤维表面特性表征  

Surface Properties of Kenaf Fiber with Calcium Carbonates Nanoparticle Impregnation

作　　者：程海涛[1] 王戈[1] 史强[1] 谌晓梦[1] 张双保[1] 

机构地区：[1]北京林业大学材料科学与技术学院

出　　处：《林产工业》2013年第3期52-54,共3页China Forest Products Industry

基　　金：国家自然科学基金项目(31170525);“十二五”国家科技支撑计划项目(2012BAD23B0203)

摘　　要：应用van Oss-Chaudhury-Good组合路易斯酸碱理论,对纳米碳酸钙原位改性的洋麻纤维表面能及其Lewis酸碱力进行计算,并通过对洋麻纤维/聚丙烯复合材料拉伸力学的测试对纤维表面特性进行表征。结果表明,接触角数值随测试液体极性分量的减小而降低;原位改性使洋麻纤维的总表面能变化不大,但其极性分量由0.094减小为0.025,Lewis碱性力由7.49增加为30.71;洋麻改性纤维制得的复合材料拉伸强度和弹性模量提高了9.92%和25.88%。With the van Oss-Chaudhury-Good theory, the surface free energy and Lewis acid-base compo- nent of kenaf fiber whose surface was in situ deposited by calcium carbonate nanoparticles were calculated. And the tensile strength and tensile modulus of the kenaf fiber/PP composites were tested to characterize the interface properties. The results show that the contact angles decrease with the decrease of the polar component of the test liquid; the surface free energy of the modified kenaf fiber dose not changed significantly, but the polar compo- nent decreases from 0.094 to 0.025, and the Lewis basic component increases from 7.49 to 30.71; the tensile strength and tensile modulus of the modified kenaf fiber/PP composites increase by 9.92% and 25.88%, respectively.

关 键 词：纳米碳酸钙 纤维 接触角 表面能 复合材料 

分 类 号：TB383[一般工业技术—材料科学与工程] S563[农业科学—作物学]