The National Center for Preservation Technology and Training (NCPTT), Cane River National Heritage Area (CRNHA), and Cane River Creole National Historic Park (CARI) will showcase recent research at the 9th annual Preservation in Your Community (PIYC) on August 11, 2009 at 5:30 p.m. at NCPTT’s Lee H. Nelson Hall on Northwestern’s campus.
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Some natural science specimens and ethnographic artifacts in museums were historically treated with arsenic and mercury salts. This has created an environmental concern for museum workers and the public who may be exposed to these toxins. In addition, museums are frequently being asked to return sacred objects under the Native American Graves Protection and Repatriation Act (NAGPRA).
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NAPAP researchers exposed limestone and marble briquettes to weathering for months to years at several different sites. They sampled the briquettes and analyzed multiple layers for anion content.
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Sensitive building materials such as calcareous stone are subject to accelerated deterioration by several agents. These may be physical processes such as freeze-thaw cycles, chemical processes such as reaction with sulfur dioxide gas, or biological processes such as attack by microorganisms.
Read more →NCPTT’s materials research program hosted representatives from Hybrid Plastics. The company specializes in new resin and plastics based on a new chemical technology called POSS.
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