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.
出处
《林产工业》
北大核心
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)
关键词
纳米碳酸钙
纤维
接触角
表面能
复合材料
Calcium carbonate nanoparticles
Fiber
Contact angle
Surface free energy
Composites
