Materials Reports  2019, Vol. 33 Issue (z1): 412-415 |
| METALS AND METAL MATRIX COMPOSITES |
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| The Influence of Solvent on the Morphology of Metal Film on PMMA Substrate |
| XUE Xiuli1,2, ZENG Chaofeng1, WANG Shibin2, LI Lin’an2, WANG Zhiyong2
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1 Hunan Provincial Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring, Hunan University of Science &Technology, Xiangtan 411201
2 Department of Mechanics, Tianjin University, Tianjin 300072 |
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Abstract In order to study the effect of solvents on the surface and interface damage of metal film/polymer substrate structures, we deposited metal titanium, copper, aluminum and nickel thin films on poly(methyl methacrylate) (PMMA) substrates by dc magnetron sputtering method. Four kinds of solvent including anhydrous ethanol, acetone, chloroform and water were used to contact the surface of film/substrate respectively. An optical microscope was used to observe the film morphology. Results show that other than water, the ethanol and acetone penetrated to the film/substrate interface, and then swelled the PMMA substrate, causing interface failure and buckles of the film from the interface, as well as some dynamic propagations. While chloroform dissolved the PMMA substrate, causing interface failure and buckles of the film then collapsing to the substrate. Interface damages are related to physicochemical reaction between solvents and polymers, that is to say whether can solvents swell or dissolve with the substrate. Film delaminating mechanism relies on the stress state of thin film, interfacial toughness as well as the sensitivity of the solvent to the polymer substrate. It can be seen that the solvent will affect the integrity of the metal film/polymer substrate structure and reduce its service life. Yet to the other hand, through this method, regular and controllable patterns of thin films will be manufactured by perfecting experiments and theories.
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Published: 05 July 2019
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| About author:: Xiuli Xue received her Ph.D. degree in solid mecha-nics from Tianjin University in 2014. She is currently an associate professor in Hunan University of Science & Technology. Her research interests are mechanics of thin film and smart materials. |
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