Influence of pH in the synthesis of ferric tannate pigment for application in antifouling coatings

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dc.contributor	Universitat Politècnica de Catalunya. Departament de Ciència i Enginyeria Nàutiques
dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.contributor	Universitat Politècnica de Catalunya. IMEM-BRT- Innovation in Materials and Molecular Engineering - Biomaterials for Regenerative Therapies
dc.contributor.author	Peres, Rafael
dc.contributor.author	Zmozinski, Ariane V.
dc.contributor.author	Moreno Martinez, Juan Antonio
dc.contributor.author	Armelín Diggroc, Elaine Aparecida
dc.contributor.author	Alemán Llansó, Carlos
dc.contributor.author	Ferreira, Carlos Arthur
dc.date	2017-05-08
dc.identifier.citation	Peres, R.S, Zmozinski, A., Moreno, J., Armelin, E., Aleman, C., Ferreira, C.A. Influence of pH in the synthesis of ferric tannate pigment for application in antifouling coatings. "Journal of coatings technology and research", 8 Maig 2017, vol. 14, núm. 4, p. 945-953.
dc.identifier.citation	1945-9645
dc.identifier.citation	10.1007/s11998-016-9904-3
dc.identifier.uri	http://hdl.handle.net/2117/116525
dc.language.iso	eng
dc.relation	https://link.springer.com/article/10.1007%2Fs11998-016-9904-3
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Nàutica::Enginyeria naval::Manteniment i reparació del vaixell
dc.subject	Àrees temàtiques de la UPC::Enginyeria química::Indústries químiques::Colorants, pintures i vernissos
dc.subject	Antifouling paint
dc.subject	Paint, Antifouling.
dc.subject	Protective coatings
dc.subject	Corrosion and anti-corrosives
dc.subject	Antifouling
dc.subject	Diffusion
dc.subject	Ferric tannate
dc.subject	Tannin
dc.subject	Coatings
dc.subject	Revestiments protectors
dc.subject	Corrosió i anticorrosius
dc.title	Influence of pH in the synthesis of ferric tannate pigment for application in antifouling coatings
dc.type	info:eu-repo/semantics/submittedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	Ferric tannate was synthesized at pH 4 and pH 7 (FT4 and FT7, respectively) as a new class of environmentally friendly antifouling pigments. The solubility of both pigments was evaluated by gravimetric tests, showing that FT4 is more soluble than FT7. A mixture of rosin/acrylic resin (9:1 w/w) was sufficient to form an antifouling coating due to improved matrix properties. Electrochemical impedance spectroscopy (EIS) measurements were used to determine the apparent water coefficient of diffusion (D) and coating behavior. The D in the coating formulated with FT4 exhibited better values than that obtained with FT7. EIS results showed that both coatings present Fickian behavior at the initial stages of immersion, while flat Nyquist plots revealed penetration of water in the films. The physicochemical characteristics of FT4 pigment were determined by thermogravimetry and Fourier transform infrared. Immersion tests in the Mediterranean Sea demonstrated the excellent efficacy of the FT4-containing coating against marine fouling after six months of immersion.

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