Article on evaluating synthetic resin adhesives

The new edition of Studies in Conservation, volume 60, number 1,
January 2015 is out and has a very useful article by Jane Down, "The
evaluation of selected poly(vinyl acetate) and acrylic adhesives: a
final research update".  As Senior Conservation Scientist Down and
her associates have done in the past for so many materials in
conservation, or procedures, here they show how extended testing has
produced some surprises in the behavior of some of the most used
adhesives in our field.  The aging characteristics of a number of
products should cause practitioners to modify their use of the
materials and perhaps replace others.  Initial results were reported
for 4 to 5 years in 1996, while this report covers 25-27 years of
dark aging and 12 to 15 of light aging for a number of features,
from strength, yellowing, flexibility, etc.  While the results in
general are not a great surprise, in a few cases they are of great
interest.  Thanks to the CCI and Down and her associates for another
example of fine and elegant scientific work.

Niccolo Caldararo, Ph.D.
San Francisco State University
and
Conservation Art Service


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                  Conservation DistList Instance 28:37
                 Distributed: Friday, February 27, 2015
                       Message Id: cdl-28-37-006
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