Cellulose nanocrystal (CNC)-based nanocomposites for UV curable high-solid coating systems / Alireza Kaboorani in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 5 (09/2017)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 5 (09/2017) . - p. 1137-1145 Titre : Cellulose nanocrystal (CNC)-based nanocomposites for UV curable high-solid coating systems Type de document : texte imprimé Auteurs : Alireza Kaboorani, Auteur ; Nicolas Auclair, Auteur ; Bernard Riedl, Auteur ; Omid Hosseinaei, Auteur ; Siqun Wang, Auteur Année de publication : 2017 Article en page(s) : p. 1137-1145 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Vernis Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules. Copolymère époxy acrylate Cristaux Haut extrait sec Hydrophobie Nanoindentation Nanoparticules Revêtements -- Séchage sous rayonnement ultraviolet Revêtements intérieurs Rugosité Stabilité thermique Statistique Vernis -- Propriétés mécaniques Index. décimale : 667.9 Revêtements et enduits Résumé : Demand for durable clear wood coatings is on the rise. Cellulose nanocrystals (CNC) constitute an organic nanomaterial widely studied in polymer composites for its reinforcing effect. In this study, CNC was used to enhance the performance of a UV curable high-solid content coating system intended for indoor environments. The CNC surface was modified by a cationic surfactant since the coating system was hydrophobic resin-based requiring hydrophobic nanomaterial reinforcement. Modified CNC was mixed with the coating system using a high-speed mixer and the ultrasonication technique. Mechanical, thermal and morphological properties and curing behavior of the newly developed UV-curing coatings were assessed. Inclusion of CNC in the coating increased the mechanical properties (hardness and reduced modulus) of the coating system to a large extent. Thermal stability of the coating system was also improved by CNC addition. The CNC did not affect the curing behavior of the coating, in contrast to most inorganic nanomaterials. The CNC dispersed well in the matrix at 1% loading. Results of this study show that CNC can be used successfully with high-solid content coating systems. Note de contenu : - EXPERIMENTAL : Materials - METHODS : CNC surface modification - Preparation of UV-curable formulations - CHARACTERIZATIONS : Thermal stability - Photodifferential scanning calorimetry (photo-DSC) - Atomic force microscopy (AFM) - Nanoindentation - Statistical analyses - RESULTS : Thermal stability - Surface roughness - Curing behavior - Mechanical properties DOI : 10.1007/s11998-017-9929-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9929-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29148 [article]

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