| Titre : |
Development of functionalized SiO2–TiO2 reinforced cardanol and caprolactam modified diamine based polybenzoxazine nanocomposites for high performance applications |
| Type de document : |
texte imprimé |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 1737-1749 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Anticorrosion
Benzoxazine
Cardanol
Composés inorganiques -- Synthèse
Composés organiques -- Synthèse
Dioxyde de silicium
Dioxyde de titane
Matériaux -- Propriétés fonctionnelles
Métaux -- Revêtements protecteurs
Polybenzoxazine
Revêtements -- Analyse
Revêtements -- Propriétés thermomécaniques
Revêtements organiques
Transition vitreuse
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In the present work, three types of polybenzoxazines were synthesized using caprolactam-based diamine (CPA-NH2) and formaldehyde with different phenols, namely 4-fluorophenol, cardanol, and phenol, under appropriate experimental conditions. The molecular structure of the benzoxazine monomers was confirmed by FTIR, 1H, and 13C NMR spectroscopic techniques. Polybenzoxazines were obtained through ring-opening polymerization of benzoxazine monomers, and their formation was confirmed by FTIR spectroscopy. The elemental composition and morphological behavior of polybenzoxazines were characterized by SEM-EDAX and AFM techniques. The naturally occurring cardanol- and caprolactam-based diamine (CPA-NH2)-based benzoxazine was selected for detailed studies. The synthesized SiO2–TiO2 nanohybrid reinforcement was functionalized with 3-aminopropyltrimethoxysilane (3-APS) and reinforced with cardanol-based benzoxazine (CPBz) monomer. The resulted nanocomposites were studied for their corrosion protection behavior against mild steel surface along with thermomechanical (TGA and DMA) and morphological (SEM, XRD, and TEM) properties. The results obtained from electrochemical impedance analysis indicate that the 5 wt% of F–SiO2–TiO2 of reinforced CPBz exhibits an effective corrosion-resistant behavior toward surface of steel specimen than that of other samples. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Synthesis of caprolactam diamine (CPA-NH2) - Synthesis of phenol-based benzoxazine (PBz) - Synthesis of 4-fluorophenol-based benzoxazine (FPBz) - Synthesis of cardanol-based benzoxazine (CPBz) - Synthesis of SiO2 nanosilica - Preparation of SiO2-TiO2 and functionalized SiO2-TiO2 nanoparticles - Preparation of neat CPBz and F-SiO2-TiO2- reinforced CPBZ nanocomposites - Surface preparation of the mild steel specimens - Preparation of neat CPBz and F-SiO2-TiO2
- RESULTS AND DISCUSSION : FTIR analysis - NMR analysis - XRD analysis - Thermal properties - Dynamic mechanical analysis (DMA) - Morphological studies |
| DOI : |
10.1007/s11998-019-00263-w |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00263-w.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33427 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 6 (11/2019) . - p. 1737-1749
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Development of functionalized SiO2–TiO2 reinforced cardanol and caprolactam modified diamine based polybenzoxazine nanocomposites for high performance applications in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 6 (11/2019)
