Surface modification of POSS-polyimide hybrid films by atomic oxygen using ECR plasma

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	Surface modification of POSS-polyimide hybrid films by atomic oxygen using ECR plasma
	S. W. Duo; H. Ke; T. Z. Liu; M. M. Song; M. S. Li
	2013
发表期刊	Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms
ISSN	0168-583X
卷号	307 页码:323-+
摘要	A novel polyimide (PI) hybrid nanocomposite containing polyhedral oligomeric silsesquioxane (POSS) had been prepared by copolymerization of trisilanolphenyl-POSS, 4,4'-oxydianiline (ODA), and pyromellitic dianhydride (PMDA). The atomic oxygen (AO) resistance of these PI/POSS hybrid films was tested in the ground-based AO simulation facility. Exposed and unexposed surfaces were characterized by SEM and XPS. The SEM images showed that the surface of the 20 wt.% PI/POSS became much less rough than that of the pristine PI. Mass measurements of the samples showed that the erosion yield of the PI/POSS (20 wt.%) hybrid film was 1.2 x 10(-25) cm(3)/atom, and reduced to 4.3% of that of the PI film. The XPS data indicated that the carbon content of the near-surface region was decreased from 66.0 to 7.0 at.% after AO exposure. The ratio of oxygen and silicon concentrations in the near-surface region increased to 2.08 after AO exposure. The nanometer-sized structure of POSS, with its large surface area, had led AO-irradiated samples to form a SiO2 passivation layer, which protected the underlying polymer from further AO attack. The incorporation of POSS into the PI could dramatically improve the AO resistance of PI films in low earth orbit environment. (C) 2012 Elsevier B.V. All rights reserved.
部门归属	[duo, shuwang ; ke, huan ; liu, tingzhi ; song, mimi] jiangxi sci & technol normal univ, jiangxi key lab surface engn, nanchang 330013, peoples r china. [li, meishuan] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. ; duo, sw (reprint author), jiangxi sci & technol normal univ, jiangxi key lab surface engn, nanchang 330013, peoples r china. ; swduo@126.com
关键词	Atomic Oxygen Polyimide Poss Hybrid Materials Protective Coatings Low-earth-orbit Nanocomposite Films Space Environment Polymers Degradation
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71198
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. W. Duo,H. Ke,T. Z. Liu,et al. Surface modification of POSS-polyimide hybrid films by atomic oxygen using ECR plasma[J]. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms,2013,307:323-+.
APA	S. W. Duo,H. Ke,T. Z. Liu,M. M. Song,&M. S. Li.(2013).Surface modification of POSS-polyimide hybrid films by atomic oxygen using ECR plasma.Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms,307,323-+.
MLA	S. W. Duo,et al."Surface modification of POSS-polyimide hybrid films by atomic oxygen using ECR plasma".Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms 307(2013):323-+.