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

•Innovative CVD technique used to deposit ultra-thin PMMA membranes.•Indirect and direct characterization of a polymeric ultra-thin film.•Liquid monomer encapsulation as blisters in an ultra-thin polymer membrane.•Self-healing behavior under laser irradiation. This paper deals with the characterizat...

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Bibliographic Details
Published in:Progress in organic coatings 2013-12, Vol.76 (12), p.1846-1850
Main Authors: Manole, Claudiu Constantin, Marsan, Olivier, Charvillat, Cedric, Demetrescu, Ioana, Maury, Francis
Format: Article
Language:English
Subjects:
Atomic Force Spectroscopy
Chemical Sciences
Direct Liquid Injection
Engineering Sciences
Material chemistry
Materials
Photo-CVD
Poly(methyl methacrylate)
Raman Confocal Spectroscopy
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Summary:•Innovative CVD technique used to deposit ultra-thin PMMA membranes.•Indirect and direct characterization of a polymeric ultra-thin film.•Liquid monomer encapsulation as blisters in an ultra-thin polymer membrane.•Self-healing behavior under laser irradiation. 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.
ISSN:0300-9440
1873-331X
DOI:10.1016/j.porgcoat.2013.05.027