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Wednesday, May 31 • 3:30pm - 4:00pm
017. (Book and Paper) Acid Transport through Mylar Encapsulation

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Ultrasonically-welded encapsulation of documents with biaxially-oriented polyethylene terephthalate, commonly called by the commercial names of Mylar®or Melinex®, is a frequently employed treatment in library and archive collections. Encapsulation is used to reinforce a document physically and is used as a long-term storage solution. The transport of acids through this barrier is of interest, especially in light of using this treatment for long-term storage of an acid containing document, i.e. newspaper, wood-pulp paper document, among others. The transport of acid through the encapsulation barrier impacts surrounding media, while trapping this acid within the encapsulation can accelerate deterioration. Prediction of the rate of acid transport will allow conservators to make informed choices about housing and long-term storage conditions. This research studies the kinetics of acid transport through the encapsulation, providing a rate and direction of transport of acids through the encapsulation.

Speaker(s)
avatar for Patricia McGuiggan

Patricia McGuiggan

Research Professor, Department of Materials Science and Engineering, Johns Hopkins University
Dr. McGuiggan obtained her Ph.D. in Chemical Engineering from the University of Minnesota. During her Ph.D., she was a research scholar in the Applied Mathematics Department at the Australian National University working with Richard Pashley. She spent 3 years as a postdoctoral fellow... Read More →

Co-Author(s)
avatar for Andrea Hall

Andrea Hall

Senior Research Specialist, Heritage Science for Conservation, Department of Conservation and Preservation, Sheridan Libraries and Museums, Johns Hopkins University
Andrea Hall is Senior Research Specialist at Heritage Science for Conservation in the Department of Conservation and Preservation at Johns Hopkins University where she is working on physical property testing of heritage materials, environmental monitoring, studying conservation testing... Read More →
avatar for Molly K. McGath

Molly K. McGath

Analytical Chemist, The Mariners' Museum and Park
Dr. Molly K. McGath is the Analytical Chemist at the Mariners Museum and Park with research focused on studying the deterioration of metals and organics from the marine environment, environmental monitoring, evaluation of past and current conservation treatments and methods, and the... Read More →
avatar for William Minter-[PA]

William Minter-[PA]

Senior Book Conservator, Pennsylvania State University Library

Wednesday May 31, 2017 3:30pm - 4:00pm
Riverside West Exhibit Hall Exhibit Level, East Tower

Attendees (94)