24691
Accession Number
35381
Author
Angelova, Lora V.;Berrie, Barbara H.;Weiss, Richard G.
Editor
Mecklenburg, Marion F.;Charola, A. Elena;Koestler, Robert J.
Title Of Article Chaper
Extended Abstract – Partially Hydrolyzed Polyvinyl Acetate and Borax Gels for Cleaning Painted Surfaces
Title Of Journal Book
New Insights into the Cleaning of Paintings: Proceedings from the Cleaning 2010 International Conference Universidad Politecnica de Valencia and Museum Conservation Institute
Issue
3
Pages
201-203
Collation
3 p. : ills.
Reference Bibliography
Includes bibliographic references
Publisher
Smithsonian Institution Scholarly Press
Publisher City
Washington
Language Of Text
English
Literature Type
Monograph
Literature Level
Analytic
Abstract
A variety of water-based gels have been used for cleaning works of art, but many of them have undesirable properties. Gel-like materials (hereafter referred to as gels) based on polyvinyl alcohol have been investigated in an effort to expand the range of options for conservators. Polyvinyl alcohol can be cross-linked with borax to form well-characterized hydrogels. Previous studies have shown that no more than 30% of the gelated liquid can be composed of an organic solvent. The present study reports that polyvinyl acetate (PVAc) with reduced hydrolysis fractions can form borax cross-linked gels with a large mole fraction of methanol, ethanol, 1-and 2-propanol, acetone, or N-methyl pyrrolidinone (NMP) as a cosolvent with water. The gels can be made nonsticky, transparent, pliant, and stable over periods of at least weeks in closed vessels at room temperature. As such, they show great potential for the removal of dirt and other coatings from sensitive and delicate surfaces.
Keywords
hydrolyze;polyvinyl;acetate;borax;gel;cleaning;paint;surface
pub_id
24691