| Titre : |
Electrografting of mixed organophosphonic monolayers for SI-ATRP of 2-methacryloyloxyethyl phosphorylcholine |
| Type de document : |
texte imprimé |
| Auteurs : |
Bastien Arrotin, Auteur ; Jean-Marc Noël, Auteur ; Joseph Delhalle, Auteur ; Laetitia Mespouille, Auteur ; Zineb Mekhalif, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 1121-1132 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Alliages
Greffage (chimie)
NitinolLe nickel-titane, connu aussi sous le nom de Nitinol est un alliage de nickel et de titane, dans lequel ces deux éléments sont approximativement présents dans les mêmes pourcentages.
Poly(2-méthacryloyloxyéthyl phosphorylcholine)
Polymérisation radicalaire par transfert d'atome
Revêtement monocouche
Revêtements organiques
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Nitinol (NiTi), one of the most important alloys for biomedical applications, is still hampered by its surface nickel inclusions, making it sensitive to pitting corrosion and leading therefore to the release of potentially carcinogenic Ni2+ ions. In this work, we assess the impact of the combination of electrografted mixed self-assembled monolayers (SAMs) on NiTi followed by a polymer coating formed by surface-initiated atom transfer radical polymerization (SI-ATRP). The molecular ratio of 11-(2-bromoisobutyrate)-undecyl-1-phosphonic acid (BUPA) to 11-decylphosphonic acid (C10P) on the electroassisted elaboration of the (BUPA/C10P)-NiTi-SAMs has been optimized. A small amount of BUPA (20%) appears to be the most promising condition, as it provides an efficient corrosion resistance and promotes the SI-ATRP of 2-methacryloyloxyethyl methacrylate (MPC). This confers to the surface hydrophilic properties and corrosion resistance close to those NiTi-SAMs when long polymerization times are used (≥ 6 h). |
| Note de contenu : |
- EXPERIMENTAL SECTION : Chemicals - Nitinol substrates preparation - Electroassisted grafting of mixed initiating monolayers on nitinol - SI-ATRP of MPC - Substrate characterization
- RESULTS AND DISCUSSION : Electroassisted grafting BUPA/C10P mixed monolayers - Surface-initiated atom transfer radical polymerization of 2-methacryloyloxyethyl phosphorylcholine on BUPA/C10P-NiTi |
| DOI : |
10.1007/s11998-019-00186-6 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00186-6.pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32867 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 4 (07/2019) . - p. 1121-1132
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