| Different responses of several kinds of copolymerized polyimide films to ultraviolet irradiation | |
| Department | 固体润滑国家重点实验室 ; 先进润滑与防护材料研究发展中心 |
Pei XQ(裴先强); Wang QH(王齐华)
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| 2007 | |
| Source Publication | Applied Surface Science
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| ISSN | 0169-4332 |
| Volume | 253Pages:5494-5500 |
| Abstract | The surfaces of three kinds of copolymerized polyimide films were irradiated by ultraviolet (UV) light. The chemical composition changes of the films after irradiation were investigated by X-ray photoelectron spectroscopy (XPS), while their topographical changes were studied by atomic force microscopy (AFM). Besides, the surface topographical variation induced changes in friction behavior were recorded on a DF PM unidirectional friction and wear test rig in a ball on block contact configuration. It was found that photodegradation took place, which induced the chain scission of the polyimide molecules and formation of low molecular weight oxidized material (LMWOM). Due to different photostability of the three kinds of polyimide, different chemical composition changes and forms of “LMWOM” were observed. Also, different friction behavior variations of the three kinds of polyimide films were recorded. It is thought that the polyimide film of PI (PPA + PMDA) with rod-like structures might have stronger photo-resistance, whose form of “LMWOM” was “nodules” and whose friction coefficient increased at 2 h of irradiation possibly due to cross-linking. In the case of PI (OPA + PMDA) and PI (MPA + PMDA) films, they mainly underwent photodegradation, which might soften the surfaces and increased the friction coefficients with increasing irradiation time. |
| Keyword | Polyimide Film X-ray Photoelectron Spectroscopy Atomic Force Microscopy Surface Topography Friction Behavior Photochemistry |
| Subject Area | 材料科学与物理化学 |
| Funding Organization | the Innovative Group Foundation from NSFC (Grant No. 50421502);the National Natural Science Foundation of China (Grant No. 50475128) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 聚合物自润滑复合材料组 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/4097 |
| Collection | 固体润滑国家重点实验室（LSL） 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 |
| Corresponding Author | Wang QH(王齐华) |
| Recommended Citation GB/T 7714 | Pei XQ,Wang QH. Different responses of several kinds of copolymerized polyimide films to ultraviolet irradiation[J]. Applied Surface Science,2007,253:5494-5500. |
| APA | 裴先强,&王齐华.(2007).Different responses of several kinds of copolymerized polyimide films to ultraviolet irradiation.Applied Surface Science,253,5494-5500. |
| MLA | 裴先强,et al."Different responses of several kinds of copolymerized polyimide films to ultraviolet irradiation".Applied Surface Science 253(2007):5494-5500. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 20075494-5500.pdf（1034KB） | 开放获取 | CC BY-NC-SA | View Application Full Text | |||
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