JAIC 1986, Volume 25, Number 1, Article 3 (pp. 31 to 37)
JAIC online
Journal of the American Institute for Conservation
JAIC 1986, Volume 25, Number 1, Article 3 (pp. 31 to 37)

THE DIFFUSION OF SULFUR DIOXIDE IN AIR THROUGH STACKED LAYERS OF PAPER

Michael A. Dimitroff, & James W. Lacksonen


ABSTRACT—Sulfur dioxide (0.5% to 1.0%) in air at 73F and 57% relative humidity was used to measure the effective diffusivity of sulfur dioxide through paper. A 3.8cm thick block of stacked layers of 100% cotton bond Crane's Kid Finish in Pearl White color was mounted in a diffusion cell. Diffusion studies were made in directions both normal (perpendicular) and parallel to stacked sheets of paper. An average effective diffusivity of 0.0072 cm2/s and a tortuosity of 4.7 were calculated for the diffusion of sulfur dioxide normal to the paper. An average effective diffusivity of 0.036 cm2/s and a tortuosity of 1.0 were calculated for diffusion parallel to the paper.

Article Sections:

2. EXPERIMENTAL
3. RESULTS
4. CONCLUSIONS
a: References
Entire Article

Copyright 1986 American Institute for Conservation of Historic and Artistic Works