| Titre : |
Structural organisations in polystyrene-based semifluorinated block copolymers for low surface energy coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
G. Galli, Auteur ; E. J. Kramer ; A. Hexemer, Auteur ; C. K. Ober, Auteur ; X. Li, Auteur ; E. Chiellini, Auteur ; L. Andruzzi, Auteur |
| Année de publication : |
2004 |
| Article en page(s) : |
p. 77-82 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Copolymères séquencés
Cristaux liquides
Energie de surface
Enrobage (technologie)
Fluoropolymères
Morphologie (matériaux)
Revêtements organiques
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
New narrow-polydispersity AB block copolymers were prepared by 2,2,6,6-tetramethylpiperidin-1-yloxy (TEMPO)-mediated, controlled radical polymerisation. The A block was a poly(styrene) block, and the B block was a semifluorinated block, using either a poly(styrene) or a polyacrylate backbone. The semifluorinated side segments self-assembled into smectic mesophases. The bulk morphology and the interplay between microphase separation and liquid crystalline order were examined using transmission electron microscopy (TEM) and x-ray scattering. Near-edge x-ray absorption fine structure (NEXAFS) studies revealed that the semifluorinated side groups were ordered and titled at the outer surface of polymer films and allowed evaluation of the orientational order parameters. The orientational order parameter of the C-F bonds of the semifluorinated side groups at the surface was correlated with the critical surface tension of the polymer that had been extrapolated from Zisman plots with n-alkanes as the interrogating liquids. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURES : Materials - Characterisation
- RESULTS AND DISCUSSION : Synthesis - Mesophase behaviour - Bulk morphology
- Table 1 : Physico-chemical data and mesophase properties of the block copolymers studied
- Table 2 : Examples of morphologies of fluorinated block copolymers by TEM and SAXS
- Table 3 : Surface orientational order parameters of block copolymers by NEXAFS |
| DOI : |
10.1007/BF02699600 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/BF02699600.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5466 |
in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 87, B2 (06/2004) . - p. 77-82
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