NEH banner [Return to Query]

Products for grant PR-263932-19

PR-263932-19
Encapsulation: Past, Present, and Future
Patricia McGuiggan, Johns Hopkins University

Grant details: https://securegrants.neh.gov/publicquery/main.aspx?f=1&gn=PR-263932-19

The breathability of PET to water vapor: Thickness effects (Article)
Title: The breathability of PET to water vapor: Thickness effects
Author: Andrea K.I. Hall
Author: Molly K. McGath
Author: William D. Minter
Author: Patricia M. McGuiggan
Abstract: A model study of the permeation of water vapor through archival polyethylene terephthalate (PET) in the context of encapsulation is reported. Using intentionally wetted paper, the rate of mass loss of a wet, encapsulated paper was measured and found to be 1000 times slower than the rate of mass loss from wetted unencapsulated paper. The results show that water vapor can permeate through the PET film and the measured rate of vapor flux increases with decreasing PET thickness. The measured mass loss from the encapsulate was used to calculate the relative humidity (RH) inside the encapsulate and the moisture content of the encapsulated paper. The moisture content of encapsulated paper was calculated to be slighter higher than the moisture content of unencapsulated paper, which might be due to a modified cellulose network structure caused by the slower mass loss or variability in the paper, or due to condensation of water vapor on the PET within the encapsulate. The results of this paper quantify the movement of water vapor through PET film and provide conservators insight on the microenvironment in their PET enclosures.
Year: 2020
Primary URL: https://doi.org/10.1080/01971360.2019.1603713
Access Model: Subscription
Format: Journal
Periodical Title: Journal of the American Institute for Conservation
Publisher: American Institute for Conservation

Directional dependence of the mechanical properties of aged paper (Article)
Title: Directional dependence of the mechanical properties of aged paper
Author: Sophie Leheny
Author: Thomas C. Robbins
Author: Catherine K. Robbins
Author: Fangyi Zhou
Author: Andrea K.I.Hall
Author: Molly K. McGath
Author: Louise Pasternack
Author: Jay Wallace
Author: Thomas C. O'Connor
Author: Patricia M. McGuiggan
Abstract: Tensile testing
Year: 2021
Primary URL: https://doi.org/10.1016/j.mechmat.2021.104036
Access Model: subscription
Format: Journal
Periodical Title: Mechanics of Materials
Publisher: Elsevier


Permalink: https://securegrants.neh.gov/publicquery/products.aspx?gn=PR-263932-19