Structural and tribological responses of phenolphthalein poly(ether sulfone) on electron irradiation |
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| Authors: | Xianqiang Pei Qihua Wang Jianmin Chen |
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| Institution: | a State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China
b Graduate school of the Chinese Academy of Sciences, Beijing 100039, PR China |
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| Abstract: | The blocks of phenolphthalein poly(ether sulfone) (PES-C) were prepared by hot pressing. Then the blocks were irradiated with electron beams under N2 atmosphere at room temperature. The structural and tribological responses of PES-C on electron irradiation were investigated. Results showed that partial degradation took place on the surface of PES-C after electron irradiation. Even so, the infrared spectra (FTIR) of PES-C after electron irradiation maintained much memory of the pristine sample, the reason for this might be due to the radiation-resistant property of PES-C and the less damage caused by the lower liner energy transfer of electron with respect to other ions. In addition, amorphous carbon and carbides formed on the surface of PES-C after electron irradiation. Friction and wear tests revealed that with increasing irradiation dose, it took more time for the friction coefficient to decrease from a higher value to a lower one and level off. And the wear rate decreased with the increase of irradiation dose. It was concluded that the variation of the tribological behavior of PES-C resulted from its structural responses on electron irradiation on the surface. |
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| Keywords: | Phenolphthalein poly(ether sulfone) (PES-C) Electron irradiation Structure Tribological properties |
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