|About this Abstract
||Materials Science & Technology 2014
||Understanding the Engineering Design of Art Objects and Cultural Heritage
||Nanoindentation of Naturally Aged Biopolymers: Testing the Mechanical Properties of Oil Paints from Van Gogh Forward
||Madeleine Wright, Katherine Faber, Kenneth Shull, Francesca Casadio, Maria Kokkori, Kimberley Muir
|On-Site Speaker (Planned)
Since the 15th century, oil has been the medium of choice for painters throughout the Western world. Compared to chemistries, the mechanical properties of paint films have been the subject of limited investigations. Their study is nevertheless important because it has implications for the deterioration, handling, storage, and treatment of paintings. Until recently, tensile strength measurements provided insight into the mechanical properties of paint strips, but the sample sizes required for these limited their applicability to actual artworks. Because of the sizes involved, nanoindentation can be applied to investigate the properties of paint films. Here, nanoindentation measurements are conducted on reference synthetic and oil-based paints along with cross-sections of 19th and 20th century paintings from the Art Institute of Chicago. The results allowed for determination of changes in stiffness and embrittlement of zinc oxide-based paints selected to cover a span from van Gogh’s The Bedroom, 1889 to contemporary acrylic paints.
||Definite: A CD-only volume