Dissolution rate measurements of sea water soluble pigments for antifouling paints

ZnO

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The dissolution of soluble pigments from both tin-based and tin-free chemically active antifouling (AF) paints is a key process influencing their polishing and biocide leaching rates. In this context, a low time- and resources-consuming method capable of screening the pigment behaviour in the search for the most promising materials or mixtures is of great interest. A preliminary attempt to develop such a method is presented in this paper based on the widely used ZnO pigments.

While highly pure, nano-polished, monocrystalline ZnO substrates yielded very low dissolution rates in the order of 17.3 +/- 3.7 mu g Zn2+ cm(-2) day(-1), pellets prepared by compacting and sintering technical grade ZnO pigments dissolved about three times faster according to inductively-coupled plasma mass spectrometry (ICP-MS) measurements. The rougher and more porous surface exposed, together with the larger number of defects in the lattice structure, are hypothesised to be responsible for the faster sea water attack of the pellets compared to the ZnO crystals. In any case, the ZnO dissolution rates reported in this paper are markedly lower than those associated with the sea water dissolution of cuprous oxide (Cu2O) particles which are also used in AF paints. Experimental performance testing of model antifouling paints formulated with ZnO and/or Cu2O demonstrates that the binder/pigment interaction should not be disregarded if the leaching of sea water soluble pigments from paint systems is to be determined. (C) 2006 Elsevier B.V. All rights reserved.
Original languageEnglish
JournalProgress in Organic Coatings
Volume56
Issue number4
Pages (from-to)327-337
ISSN0300-9440
DOIs
Publication statusPublished - 2006

Cite this

@article{afff683db27f48e18bbce6b2bd4f49ac,
title = "Dissolution rate measurements of sea water soluble pigments for antifouling paints: ZnO",
abstract = "The dissolution of soluble pigments from both tin-based and tin-free chemically active antifouling (AF) paints is a key process influencing their polishing and biocide leaching rates. In this context, a low time- and resources-consuming method capable of screening the pigment behaviour in the search for the most promising materials or mixtures is of great interest. A preliminary attempt to develop such a method is presented in this paper based on the widely used ZnO pigments.While highly pure, nano-polished, monocrystalline ZnO substrates yielded very low dissolution rates in the order of 17.3 +/- 3.7 mu g Zn2+ cm(-2) day(-1), pellets prepared by compacting and sintering technical grade ZnO pigments dissolved about three times faster according to inductively-coupled plasma mass spectrometry (ICP-MS) measurements. The rougher and more porous surface exposed, together with the larger number of defects in the lattice structure, are hypothesised to be responsible for the faster sea water attack of the pellets compared to the ZnO crystals. In any case, the ZnO dissolution rates reported in this paper are markedly lower than those associated with the sea water dissolution of cuprous oxide (Cu2O) particles which are also used in AF paints. Experimental performance testing of model antifouling paints formulated with ZnO and/or Cu2O demonstrates that the binder/pigment interaction should not be disregarded if the leaching of sea water soluble pigments from paint systems is to be determined. (C) 2006 Elsevier B.V. All rights reserved.",
author = "Yebra, {Diego Meseguer} and S{\o}ren Kiil and {Erik Weinell}, Claus and Kim Dam-Johansen",
year = "2006",
doi = "10.1016/j.porgcoat.2006.06.007",
language = "English",
volume = "56",
pages = "327--337",
journal = "Progress in Organic Coatings",
issn = "0300-9440",
publisher = "Elsevier",
number = "4",

}

Dissolution rate measurements of sea water soluble pigments for antifouling paints : ZnO. / Yebra, Diego Meseguer; Kiil, Søren; Erik Weinell, Claus; Dam-Johansen, Kim.

In: Progress in Organic Coatings, Vol. 56, No. 4, 2006, p. 327-337.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Dissolution rate measurements of sea water soluble pigments for antifouling paints

T2 - ZnO

AU - Yebra, Diego Meseguer

AU - Kiil, Søren

AU - Erik Weinell, Claus

AU - Dam-Johansen, Kim

PY - 2006

Y1 - 2006

N2 - The dissolution of soluble pigments from both tin-based and tin-free chemically active antifouling (AF) paints is a key process influencing their polishing and biocide leaching rates. In this context, a low time- and resources-consuming method capable of screening the pigment behaviour in the search for the most promising materials or mixtures is of great interest. A preliminary attempt to develop such a method is presented in this paper based on the widely used ZnO pigments.While highly pure, nano-polished, monocrystalline ZnO substrates yielded very low dissolution rates in the order of 17.3 +/- 3.7 mu g Zn2+ cm(-2) day(-1), pellets prepared by compacting and sintering technical grade ZnO pigments dissolved about three times faster according to inductively-coupled plasma mass spectrometry (ICP-MS) measurements. The rougher and more porous surface exposed, together with the larger number of defects in the lattice structure, are hypothesised to be responsible for the faster sea water attack of the pellets compared to the ZnO crystals. In any case, the ZnO dissolution rates reported in this paper are markedly lower than those associated with the sea water dissolution of cuprous oxide (Cu2O) particles which are also used in AF paints. Experimental performance testing of model antifouling paints formulated with ZnO and/or Cu2O demonstrates that the binder/pigment interaction should not be disregarded if the leaching of sea water soluble pigments from paint systems is to be determined. (C) 2006 Elsevier B.V. All rights reserved.

AB - The dissolution of soluble pigments from both tin-based and tin-free chemically active antifouling (AF) paints is a key process influencing their polishing and biocide leaching rates. In this context, a low time- and resources-consuming method capable of screening the pigment behaviour in the search for the most promising materials or mixtures is of great interest. A preliminary attempt to develop such a method is presented in this paper based on the widely used ZnO pigments.While highly pure, nano-polished, monocrystalline ZnO substrates yielded very low dissolution rates in the order of 17.3 +/- 3.7 mu g Zn2+ cm(-2) day(-1), pellets prepared by compacting and sintering technical grade ZnO pigments dissolved about three times faster according to inductively-coupled plasma mass spectrometry (ICP-MS) measurements. The rougher and more porous surface exposed, together with the larger number of defects in the lattice structure, are hypothesised to be responsible for the faster sea water attack of the pellets compared to the ZnO crystals. In any case, the ZnO dissolution rates reported in this paper are markedly lower than those associated with the sea water dissolution of cuprous oxide (Cu2O) particles which are also used in AF paints. Experimental performance testing of model antifouling paints formulated with ZnO and/or Cu2O demonstrates that the binder/pigment interaction should not be disregarded if the leaching of sea water soluble pigments from paint systems is to be determined. (C) 2006 Elsevier B.V. All rights reserved.

U2 - 10.1016/j.porgcoat.2006.06.007

DO - 10.1016/j.porgcoat.2006.06.007

M3 - Journal article

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JO - Progress in Organic Coatings

JF - Progress in Organic Coatings

SN - 0300-9440

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ER -