Evaluation of relative humidity effects on fabric-supported paintings by dynamic mechanical and dielectric analysis

Odlyha, Marianne; Chan, Thalia; Pagès, O.

doi:10.1016/0040-6031(94)02387-4

Cited by 12 publications

(3 citation statements)

References 7 publications

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“…From such studies, valuable information was gained on the influence of the type of pigments, aging of paint, temperature, relative humidity and solvents on the mechanical properties of paint films [5,6,[8][9][10][11]. Effects of solvents and of relative humidity on paint properties were also investigated by thermomechanical measurements on small samples of reconstructed paint, providing information indirectly related to mechanical properties, such as the compressibility as a function of temperature or viscoelastic behavior [12,13]. All these results emphasize the fact that an oil paint is a slowly evolving system.…”

Section: Introductionmentioning

confidence: 99%

Nanoindentation and the micromechanics of Van Gogh oil paints

Salvant

Barthel

2011

Appl. Phys. A

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Understanding the mechanical properties of ancient paintings is a major issue for conservation and restoration. One strategy is to measure the mechanical properties of reconstructed paints: however the aging process is poorly known, so it is also desirable to measure mechanical properties directly on ancient paint samples. Using nanoindentation, we have characterized submillimetric samples recovered from restoration of two Van Gogh paintings and compared the results with reconstructed paint samples. We demonstrate that the reduced modulus and hardness of historical paints can be measured at a very local scale, even differentiating between each paint layer. Our reconstructed paint samples exhibit elastic moduli comparable to literature values, but the values measured on the two 19 th century paint samples are found to be significantly larger. Similarly, the compositional dependence of the elastic modulus is consistent with literature results for our reconstructed samples while our preliminary results for ancient samples do not readily fall into the same pattern. These results all point out to a significant impact of long term aging, in a manner which is difficult to predict in our present state of understanding. They demonstrate that nanoindentation is a very adequate tool to improve our knowledge of art paint mechanics and aging.

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Section: Introductionmentioning

confidence: 99%

Nanoindentation and the micromechanics of Van Gogh oil paints

Salvant

Barthel

2011

Appl. Phys. A

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“…Using a shear stress geometry and temperature range from 5 − 100 • C , an increase of G ′ (loss shear modulus, defined in a similar way to the E ′ ) and significant reduction in tan(δ) for the burnt sienna samples indicated leaching and embrittlement after solvent exposure; the lead white samples showed minimal change in response after solvent exposure [70]. Samples of the same pigments aged 15 years were explored over a range of relative humidities (54-94%) and compared to composite samples of canvas, primer, and a white oil paint layer from a rear primed painting, which demonstrated a softening behavior with an increase in relative humidity [71]. Foster et al modified a DMA system to work with a controlled RH chamber in order to study how the RH and curing process of polyester/melamine paint systems affect the glass transition temperature [72].…”

Section: Dynamic Mechanical Analysismentioning

confidence: 99%

After the paint has dried: a review of testing techniques for studying the mechanical properties of artists’ paint

et al. 2021

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While the chemistry of artists’ paints has previously been studied and reviewed, these studies only capture a portion of the properties affecting the response of paint materials. The mechanical properties of artists’ paints relate to the deformation response of these materials when a stress is applied. This response is dependent on many factors, such as paint composition, pigment to binder ratio, temperature, relative humidity, and solvent exposure. Here, thirty years of tensile testing data have been compiled into a single dataset, along with the testing conditions, to provide future researchers with easy access to these data as well some general discussion of their trends. Alongside the more commonly used techniques of tensile testing and dynamic mechanical analysis, new techniques have been developed to more fully investigate the mechanical properties, and are discussed along with salient results. The techniques have been divided into two categories: those that are restricted to use on model systems and those that are applicable to historic samples. Techniques applied to model systems (tensile testing, dynamic mechanic analysis, quartz crystal microbalance, vibration studies) require too large of a sample to be taken from art objects or focus on the mechanical properties of the liquid state (shear rheometry). Techniques applied to historic samples incorporate the use of small sample sizes (nanoindentation), optical techniques (laser shearography), computational simulations (finite element analysis), and non-invasive comparative mechanical properties (single-sided nuclear magnetic resonance) to investigate and predict the mechanical properties of paints.

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“…Examples include the following: optimizing firing treatment of cuneiform tablets [24], monitoring effects of solvent and aqueous cleaning of prepared oil [25] and acrylic paint films [26], testing effect of humidification of painted canvases [27] and the effect of deacidification of painting canvases [28]. Canvas, like paper, consists principally of cellulose, and on ageing depolymerization of cellulose fibres occurs which is promoted by acidic conditions.…”

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confidence: 99%

Introduction to the preservation of cultural heritage

Odlyha

2011

J Therm Anal Calorim

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Evaluation of relative humidity effects on fabric-supported paintings by dynamic mechanical and dielectric analysis

Cited by 12 publications

References 7 publications

Nanoindentation and the micromechanics of Van Gogh oil paints

Nanoindentation and the micromechanics of Van Gogh oil paints

After the paint has dried: a review of testing techniques for studying the mechanical properties of artists’ paint

Introduction to the preservation of cultural heritage

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