In-Situ X-ray Deformation Study of Fluorinated Multiwalled Carbon Nanotube and Fluorinated Ethylene−Propylene Nanocomposite Fibers
In-Situ X-ray Deformation Study of Fluorinated Multiwalled Carbon Nanotube and Fluorinated Ethylene−Propylene Nanocomposite Fibers
复制标题
DOI：
10.1021/ma060173u
复制
发表时间：
2006-07
期刊：
影响因子：
5.5
通讯作者：
Xuming Chen;C. Burger;D. Fang;I. Šics;Xuefen Wang;Weidong He;R. Somani;Kyunghwan Yoon;B. Hsiao;B. Chu
中科院分区：
文献类型：
--
作者：
Xuming Chen;C. Burger;D. Fang;I. Šics;Xuefen Wang;Weidong He;R. Somani;Kyunghwan Yoon;B. Hsiao;B. Chu
A fluorinated multiwalled carbon nanotube (FMWNT) was prepared by reaction of 3-perfluorooctylpropylamine with carboxylic acid groups on the oxidized carbon nanotube surface. The modification was confirmed by TGA, TEM, and solubility tests in a perfluorodecalin solvent. Nanocomposite fibers based on FMWNT and a fluoro-ethylene−propylene (FEP) copolymer were fabricated by melt blending and melt spinning. SEM examination indicated that the dispersion of FMWNT in FEP was significantly better than that of the as-received multiwalled carbon nanotube (MWNT) in FEP. Both yield strength and modulus of the melt-spun FMWNT/FEP nanocomposite fiber increased with increasing FMWNT content, but the elongation-to-break ratio decreased. In-situ small-angle X-ray scattering (SAXS) and wide-angle X-ray diffraction (WAXD) techniques were used to follow the structural changes during tensile deformation of melt-spun fibers. In pure FEP fibers, perpendicularly arranged lamellar stacks (with respect to the fiber axis) became ti...
