| Titre : |
Synthesis and characterization of novel renewable castor oil-based UV-curable polyfunctional polyurethane acrylate |
| Type de document : |
texte imprimé |
| Auteurs : |
Yun Hu, Auteur ; Chengguo Liu, Auteur ; Qianqian Shang ; Yonghong Zhou |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 77–85 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Analyse mécanique dynamique
Angle de contact
Chromatographie sur gel
Copolymère uréthane acrylate
Copolymères -- Propriétés thermiques
Copolymères -- Synthèse
Fourier, Spectroscopie infrarouge à transformée de
Gonflement (physique)
Huile de ricin et constituants
Humidité -- Absorption:Eau -- Absorption
Hydrophobie
Rayonnement ultraviolet
Résonance magnétique nucléaire
Réticulation (polymérisation)
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In recent years, a lot of interest has been given to renewable resources for their environmental friendliness and potential biodegradability in the synthesis of urethane-derived polymers. In this work, UV-curable castor oil-based polyfunctional polyurethane acrylate (COPUA) was prepared by the reaction of isophorone diisocyanate (IPDI) with castor oil and pentaerythritol triacrylate (PETA). The structures and molecular weights of the targeted IPDI–PETA and COPUA were characterized by FTIR, 1H NMR, and GPC, respectively. In addition, the effect of reactive diluent content on damping properties, thermal stabilities, and mechanical properties of COPUA was characterized by dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), and universal test machine. DMA revealed the copolymers had a glass transition temperature (T g) from 31.81 to 48.09°C. TGA showed that thermal initial decomposition temperatures were above 344.5°C, indicating the copolymers had certain thermal stability. Finally, some physical properties of curing films were studied by the contact angle and water absorption, and the results showed that the coatings exhibited good hydrophobicity. The COPUA obtained from castor oil can be used as eco-friendly materials and other applications alternative to the use of other petrochemicals in coatings. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Preparation - Determination of NCO content 24 - Characterization
- RESULTS AND DISCUSSION : FTIR analysis - 1H-NMR analysis - GPC analysis - DMA characterization - Thermal properties - Contact angle characterization - Mechanical properties of the COPUA - Swelling measurement of the COPUA - Photocuring kinetics by real-time infrared spectroscopy (RT-IR) |
| DOI : |
10.1007/s11998-017-9948-z |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9948-z.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30069 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 1 (01/2018) . - p. 77–85
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Synthesis and characterization of novel renewable castor oil-based UV-curable polyfunctional polyurethane acrylate in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 1 (01/2018)
