Evidences for liquid encapsulation in PMMA ultra-thin film grown by liquid injection Photo-CVD

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• 作者：Claudiu Constantin Manole ; Olivier Marsan ; Cedric Charvillat ; Ioana Demetrescu ; Francis Maury
• 关键词：Poly(methyl methacrylate) ; Photo-CVD ; Direct Liquid Injection ; Raman Confocal Spectroscopy ; Atomic Force Spectroscopy
• 刊名：Progress in Organic Coatings
• 出版年：2013
• 出版时间：December, 2013
• 年：2013
• 卷：76
• 期：12
• 页码：1846-1850
• 全文大小：979 K

文摘

This paper deals with the characterization of ultra-thin films of PMMA grown by an original photo-assisted Chemical Vapor Deposition process equipped with a pulsed liquid injection system to deliver the monomer. The nanometric thick films showed a good ability to encapsulate a liquid phase as microdroplets protected by a thin polymeric tight membrane in the form of blisters. Techniques that are capable to analyze these heterogeneous structures at micro- and nanoscopic scale such as Raman Confocal Spectroscopy and Atomic Force Microscopy were used to characterize these polymer films. The liquid droplets were found to be monomer encapsulated by a PMMA film. The specific properties of these ultra-thin films exhibit self-healing capabilities at microscopic scale making them attractive for functionalization of surfaces and interfaces.