Investigation of the mechanical and thermodynamic properties of a modified PAN fiber-Fe (Ⅲ) complex
A modified Polyacrylonitrile (PAN) fiber containing amidoxime groups and its fiber-Fe complex with ferric ions were prepared, then their mechanical and thermodynamic properties were investigated in this study. The results showed that the breaking strength and elongation at break of the PAN fibers gradually decreased with the amidoximation increasing. The mechanical properties of the fiber-Fe complex depended on its Fe content. Small amount of ferric ions coordinating with the fibers had a negative effect on their breaking strength and elongation at break, but high concentration of ferric ions could impart excellent mechanical properties to the fiber due to the crosslink generated by the intermolecular complexation. DMA results also showed that the molecular construction of amidoximated PAN fiber with high conversion of nitrile groups had experienced serious damage, but which was significantly recovered by coordinating with high concentration of ferric ions due to the bridged effect.
amidoximated PAN fiber ferric ion complex mechanical properties thermodynamic properties
Zhenbang Han Yongchun Dong Fang Du Juanzhi Zhao
Division of Textile Chemistry and Ecology, Textile School, Tianjin Polytechnic University,Tianjin, 3 Division of Textile Chemistry and Ecology, Textile School, Tianjin Polytechnic University,Tianjin, 3
国际会议
上海
英文
108-111
2009-05-27（万方平台首次上网日期，不代表论文的发表时间）