Adhesion mechanisms of silica layers on plasma-treated polymers. Part I. Polycarbonate
| Autor: | L. Guyot, Jolanta-Ewa Klemberg-Sapieha, Fabienne Poncin-Epaillard, A. Hofrichter, Bernard Drevillon, Ludvik Martinu, S. Vallon |
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| Rok vydání: | 1996 |
| Předmět: |
chemistry.chemical_classification
Materials science Surfaces and Interfaces General Chemistry Polymer Adhesion Photochemistry Surfaces Coatings and Films Contact angle chemistry X-ray photoelectron spectroscopy Mechanics of Materials Covalent bond Ellipsometry visual_art Materials Chemistry visual_art.visual_art_medium Surface modification Organic chemistry Polycarbonate |
| Zdroj: | Journal of Adhesion Science and Technology. 10:1287-1311 |
| ISSN: | 1568-5616 0169-4243 |
| DOI: | 10.1163/156856196x00256 |
| Popis: | We have studied the influence of plasma treatment in various gases (Ar, NH3, N2) on the surface modification of polycarbonate (PC) and on the adhesion of plasma-deposited silica layers to PC. Surface modification was investigated using in situ IR ellipsometry, X-ray photoelectron spectroscopy, and contact angle measurements interpreted in terms of electron-acceptor/ donor groups. In addition, in situ UV-visible ellipsometry enabled crosslinking analysis. Due to UV photon emission, Ar plasma treatment induced crosslinking as well as photo-Fries rearrangements and related reactions, thus creating phenolic groups. These groups are acidic sites and are likely to react with the electronegative oxygen atoms of silica. Adhesion of silica to PC, as measured by the micro-scratch test, was enhanced by Ar plasma treatment. The improvement is attributed to the crosslinking of PC, on the one hand, and to acid-base interactions and/or covalent bonding between PC and silica, on the other hand. A further improvement in a... |
| Databáze: | OpenAIRE |
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