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NICAS COLLOQUIUM
NICAS COLLOQUIUM
NICAS COLLOQUIUM
NICAS PROJECT DAY 2022 - FOURTH PART
NICAS PROJECT DAY 2022 - THIRD PART
NICAS PROJECT DAY 2022 - SECOND PART
NICAS PROJECT DAY 2022 - FIRST PART
NICAS COLLOQUIUM
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NICAS COLLOQUIUM
In this presentation, Jorien Duivenvoorden speaks about the behavior of water in oil paint. It is increasingly recognised that water plays an important role in chemical degradation of oil paint, yet little is known about the concentration and distribution of water inside a painting. This talk will discuss two different approaches to enhance our understanding of an oil painting’s response to moisture. One way to look at a painting is as a multi-layered system, in which moisture transport takes place due to humidity fluctuations in the environment. We developed a computational model that predicts the behaviour of a multi-layered painting by considering the bulk sorption and diffusion properties of the individual layers. This approach assumes the layers to be homogeneous, even though from a molecular perspective, oil paint is a heterogeneous system consisting of a complex cross-linked polymer network interspersed with pigment particles The second part of this talk will therefore discuss our experimental approach to elucidate the local distribution and character of water inside oil paint on a molecular scale. -
NICAS COLLOQUIUM
Jonas Veenhoven is a joint PhD student at Ghent University, the University of Amsterdam and the KIK-IRPA, the Royal institute for cultural heritage in Brussels Belgium. He focusses on the molecular characterisation of Asian lacquer natural polymers and the evaluation of cleaning approaches on those polymers using chromatography and mass spectrometry. The analysis of polymerised Asian lacquers is challenging due to the complex cross-linked matrices. Pyrolysis hyphenated with gas chromatography-mass spectrometry (Py-GC-MS) is suitable for the analysis of Asian lacquers and relies on the introduction of solid samples and online thermal decomposition of the lacquer polymer into small molecules amenable to GC-MS. In this contribution the stepwise application of progressive flash pyrolysis temperatures, ranging between 300-700 °C, is presented as a useful approach to differentiate between primary pyrolysis reactions and secondary dehydration products. This optimisation has shown to improve the characterisation of the polymeric compositions of Asian lacquers and to distinguish between the different, intermolecular covalent bonds. -
NICAS COLLOQUIUM
Alessandra Marrocchesi graduated in 2019 with a Master’s degree in Physics from the University of Pisa. Since 2020 she is a PhD candidate at the University of Amsterdam within the EU-funded Marie Skłodowska-Curie Actions project Cultural Heritage Analysis for New Generations (CHANGE ITN). Her research focuses on the development of novel equipment and algorithms for the investigation of cultural heritage artifacts through technical photography. -
NICAS PROJECT DAY 2022 - FOURTH PART
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NICAS PROJECT DAY 2022 - THIRD PART
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NICAS PROJECT DAY 2022 - SECOND PART
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NICAS PROJECT DAY 2022 - FIRST PART
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NICAS COLLOQUIUM
Paul van Duin is Head of Furniture Conservation and chair of the Rijksmuseum climate working group. Sustainability is one of the key priorities of the Rijksmuseum. The energy required to maintain the present climate specifications equals that of a small village. Much research has been carried out internationally to determine how far these can be relaxed without creating risk of damage. Because every object is different, this has not yet resulted in clear guidelines. Since 1,5 years the Rijksmuseum has a unique working group where conservators and engineers collaborate to advise the directors on how to save energy, both within the present climate specifications, but also by exploring the possibilities to broaden these in a safe way. The presentation gives an overview of the development of the present specifications, research carried out on wooden panels, and the approach of the climate working group.