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Influence of surfactants on rheological behaviors of polyacrylonitrile/dimethyl sulfoxide/silicon blending polymer solutions |
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| Authors: | Shuxia Yuan Yue Guo Xiaodan Ren Dongsheng Li Chunxiang Lu |
| Affiliation: | 1. CAS Key Laboratory for Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, China;2. CAS Key Laboratory for Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, China
National Engineering Laboratory for Carbon Fiber Technology, Taiyuan, China;3. National Engineering Laboratory for Carbon Fiber Technology, Taiyuan, China Yangzhou Engineering Research center of Carbon Fiber, Institute of Coal Chemistry, Chinese Academy of Sciences, Yangzhou, China |
| Abstract: | KH550, KH560, CTAB, and F127 were adopted to modify silicon (Si) to improve the dispersity and stability of Si in the polyacrylonitrile/dimethyl sulfoxide (PAN/DMSO) polymer solutions. The influence of surfactants on rheological behaviors of PAN/DMSO/Si blending polymer solutions was investigated by an advanced solution and melt rotation rheometer. The homogeneity and stability were also studied. The results showed that the surfactants could change the viscosity dependence of blending polymer solutions on shear rate, temperature and storage time by increase the steric hindrance of Si. Among the four solutions, PAN/DMSO/Si blending polymer solution with F127 exhibited the lowest viscosity, activation energy and the smallest structural viscosity index and exhibited the trend close to the Newtonian fluids. Moreover, PAN/DMSO/Si blending polymer solution with F127 exhibited the best dispersity and stability, indicating its best physical properties and machinability. |
| Keywords: | applications batteries and fuel cells electrochemistry |