Wang Shiren, Liang Richard, Wang Ben, Zhang Chuck
Department of Industrial Engineering, Texas Tech University, Lubbock, TX 79409, USA.
Nanotechnology. 2008 Feb 27;19(8):085710. doi: 10.1088/0957-4484/19/8/085710. Epub 2008 Feb 4.
An in situ functionalization method was used to graft epoxide onto single-walled carbon nanotubes (SWNTs) and improve the integration of SWNTs into epoxy polymer. The characterization results of Raman, FT-IR and transmission electron microscopy (TEM) validated the successful functionalization with epoxide. These functionalized SWNTs were used to fabricate nanocomposites, resulting in uniform dispersion and strong interfacial bonding. The mechanical test demonstrated that, with only 1 wt% loading of functionalized SWNTs, the tensile strength of nanocomposites was improved by 40%, and Young's modulus by 60%.These results suggested that efficient load transfer has been achieved through epoxide-grafting. This investigation provided an efficient way to improve the interfacial bonding of multifunctional high-performance nanocomposites for lightweight structure material applications.
采用原位功能化方法将环氧化物接枝到单壁碳纳米管（SWNTs）上，以改善SWNTs与环氧聚合物的结合。拉曼光谱、傅里叶变换红外光谱（FT-IR）和透射电子显微镜（TEM）的表征结果证实了环氧化物功能化的成功。这些功能化的SWNTs被用于制备纳米复合材料，实现了均匀分散和强界面结合。力学测试表明，仅加入1 wt%的功能化SWNTs，纳米复合材料的拉伸强度提高了40%，杨氏模量提高了60%。这些结果表明通过环氧化物接枝实现了有效的载荷传递。该研究为改善用于轻质结构材料应用的多功能高性能纳米复合材料的界面结合提供了一种有效方法。
