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Antifouling paints with zinc “tannate” / Natalia Bellotti in Industrial & engineering chemistry research, Vol. 49 N° 7 (Avril 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3386–3390 Titre : Antifouling paints with zinc “tannate” Type de document : texte imprimé Auteurs : Natalia Bellotti, Auteur ; Cecilia Deyá, Auteur ; Beatriz del Amo, Auteur Année de publication : 2010 Article en page(s) : pp. 3386–3390 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Antifouling  Paints  with  Zinc  Tannate Résumé : During the past decade, the necessity of new ecofriendly antifouling pigments was established. Among these new pigments, special attention should be paid to tannin and its derivatives. Tannins are synthesized by plants as part of their defense mechanism against the attack of pathogens. The objective of this work was to study the antifouling efficiency of paints containing zinc “tannate” in artificial seawater. The zinc “tannate” was precipitated at pH 4 and pH 8. Insoluble and soluble matrix antifouling paints, with different plasticizers, were formulated and tannins leached from the paints immersed in artificial seawater were determined by the Folin−Denis assay for polyphenols. The antifouling action of paints was assessed in a natural seawater environment. The results showed that the leaching rate of tannin from insoluble matrix paint decreases, reaching a constant value after 25 days of immersion. In the case of the soluble matrix paints, a lesser amount of tannin was leached, depending on the tannin and the plasticizer employed. The results in a natural sea environment are dependent on the matrix and the plasticizer employed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9010518 [article] Antifouling paints with zinc “tannate” [texte imprimé] / Natalia Bellotti, Auteur ; Cecilia Deyá, Auteur ; Beatriz del Amo, Auteur . - 2010 . - pp. 3386–3390. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3386–3390 Mots-clés : Antifouling  Paints  with  Zinc  Tannate Résumé : During the past decade, the necessity of new ecofriendly antifouling pigments was established. Among these new pigments, special attention should be paid to tannin and its derivatives. Tannins are synthesized by plants as part of their defense mechanism against the attack of pathogens. The objective of this work was to study the antifouling efficiency of paints containing zinc “tannate” in artificial seawater. The zinc “tannate” was precipitated at pH 4 and pH 8. Insoluble and soluble matrix antifouling paints, with different plasticizers, were formulated and tannins leached from the paints immersed in artificial seawater were determined by the Folin−Denis assay for polyphenols. The antifouling action of paints was assessed in a natural seawater environment. The results showed that the leaching rate of tannin from insoluble matrix paint decreases, reaching a constant value after 25 days of immersion. In the case of the soluble matrix paints, a lesser amount of tannin was leached, depending on the tannin and the plasticizer employed. The results in a natural sea environment are dependent on the matrix and the plasticizer employed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9010518