Preparation and evaluation of degradable polyurethane with low surface energy for marine antifouling coating / Yue Xu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 4 (07/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 4 (07/2019) . - p. 1055-1064 Titre : Preparation and evaluation of degradable polyurethane with low surface energy for marine antifouling coating Type de document : texte imprimé Auteurs : Yue Xu, Auteur ; Guoqing Wang, Auteur ; Zhuolin Xie, Auteur ; Aiming Wang, Auteur Année de publication : 2019 Article en page(s) : p. 1055-1064 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact Anti-adhérence (matériaux) Energie de surface Hydrolyse Marines (peinture) Polymères -- Détérioration Polymères -- Synthèse Polyuréthanes Revêtements antisalissures:Peinture antisalissures Index. décimale : 667.9 Revêtements et enduits Résumé : Two polyurethanes were prepared through the reaction of 1,6-diisocyanatohexane (HDI) with two kinds of alcoholates. The first alcoholate was synthesized from alcoholized lactide (PLA) and dodecafluoroheptyl methacrylate (DFHMA) with the solid super acid (SO42−/ZrO) acting as the catalyst, and the other alcoholate was a mixture of PLA and DFHMA. The composition and structure of these two polyurethanes were investigated by infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). The mass loss, attachment of bacteria and algae, and the water contact angle were used to evaluate the degradable and antifouling performance of the two polyurethane coatings. The results showed that the maximum contact angle of PLIPFI reached 129°, its mass loss was higher than 10% in 65 days, and after 65 days, the mass loss appeared to be stable, and the antiadhesion performance of the polyurethanes coatings was also enhanced. All of these results indicated that the PU modified with a graft segment may be promising for obtaining antifouling materials that not only can resist the adhesion of microorganisms but also show self-renewal. Note de contenu : - Materials - Synthesis of the polymers - Preparation of the coating - Composition characterization - Structural characterization - Hydrolytic degradation - Contact angle measurement (CA) and surface energy (E) - Antiadhesion tests - Antifouling tests in the real sea environment DOI : 10.1007/s11998-018-00180-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-00180-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32861 [article]

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