Testing Effects of Consolidation Treatment Using Paraloid B72 Solution on Sorption Properties of Degraded Wood

Author: Suzana Antolović
Mentor: Nađa Lučić, Expert Associate

Art and Restoration Department, University of Dubrovnik

ANTOLOVIC SuzanaSummary

Relative air humidity is certainly a key environmental parameter for the wooden support. As a hygroscopic material, wood reacts to fluctuating relative humidity by adjustments of its fiber's moisture content to the new conditions. Relatively small changes of moisture content in wood can affect its stability. Mechanical properties, bonds with other present materials, dimensions and geometry of the wooden object are subject to alterations in complex processes and often in ways that may endanger the artwork.
Consolidation of degraded wooden support with solutions of synthetic resins is still a widely spread and frequently inescapable method in conservation tretments, despite of all recent controversy. Experiences appear to demonstrate influences of such interventions on sorption properties of wood. Research presented here constitutes an attempt to investigate these influences more thoroughly by means of quantification of pertinent values. Along with application of materials commonly encountered and/or used in restoration practices, the procedure comprises of a sequence of controlled changes of micro-climatic conditions and measurements of corresponding values on sofwood control specimens and those treated with Paraloid B72 solution.

 

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