Nanoparticle de-acidification of the Mary Rose

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• 作者：Eleanor J. Schofield ; Ritimukta Sarangi ; Apurva Mehta ; A. Mark Jones ; Fred J.W. Mosselmans ; Alan V. Chadwick
• 刊名：Materials Today
• 出版年：2011
• 出版时间：July-August 2011
• 年：2011
• 卷：14
• 期：7-8
• 页码：354-358
• 全文大小：1883 K

文摘

The preservation of waterlogged archaeological wooden finds, such as Henry VIII's flagship the Mary Rose^{[1], [2] and [3]}, is complicated by the biological, chemical, and mechanical changes induced from prolonged exposure to a marine environment. Of particular concern are sulfur species that form acidic compounds that attack wood⁴. Here we show that different sulfur compounds do not form acids at the same rate or pathway and propose a preservation strategy of applying SrCO₃ nanoparticles. These nanoparticles not only neutralize problematic sulfuric acid, but also reduced sulfur compounds, such as sulfur and pyrite, which pose a long term threat. This is the first treatment that eliminates acidification at the root. Although this strategy was devised for the Mary Rose, it could be employed to preserve any archaeological organic artifact rich in problematic sulfur, from sunken ships^{[5] and [6]} and silk tapestries⁷ to ancient texts⁸ and parchments⁹.