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Chemical semi-IPN hydrogels for the removal of adhesives from canvas paintings
Research Area: | Uncategorized | Year: | 2014 |
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Type of Publication: | Article | ||
Authors: | |||
Journal: | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | Volume: | 114 |
Number: | 3 | Pages: | 705-710 |
Month: | March | ||
ISSN: | 0947-8396 | ||
Abstract: | Semi-interpenetrating (IPN) poly (2-hydroxyethyl
methacrylate)/polyvinylpyrrolidone hydrogels were synthesized and used
for the removal of adhesives from the back of canvas paintings. The high
water retention capability and the specific mechanical properties of
these gels allow the safe cleaning of water-sensitive artifacts using
water-based detergent systems. The cleaning action is limited to the
contact area and layer-by-layer removal is achieved while avoiding water
spreading and absorption within water-sensitive substrates, which could
lead, for example, to paint detachment. The use of these chemical gels
also avoids leaving residues over the treated surface because the gel
network is formed by covalent bonds that provide high mechanical
strength. In this contribution, the physicochemical characterization of
semi-IPN chemical hydrogels is reported. The successful application of
an o/w microemulsion confined in the hydrogel for the removal of
adhesives from linen canvas is also illustrated. |
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