Dear Mrs. Calise,
The issue with the acrylic materials is very tricky since they are very common- used but at the same time, we don't have extensive datas about their stability and durability.
From a chemical point of view the Acrylics are a family of components that tends to acidify due to the degradation of the molecular chains. The issue fastened by oxidation, by contact with external materials and solvents and by the UV light, but the process can take ages to start, depending by the quality and typology of acrylic it is. The issue, from a conservation point of view is that it is dangerous to put in contact a manufact (art object of any sort) with an acid surface, because this can cause a process of degradation in the art object itself. From the mount-making point of view, it can be possible that a degradated acrylic pedestal or glass can not have anymore the same characteristics from the time of purchase (strenght, transparency, resistance, color). The degradation process is often long in time and not so worrying but requires some attentions and knowledge.
Being such a difficult topic, I would suggest to get in contact with one of the C2C experts, in order to comprehend better how to behave around the material. I will come back to you soon as possible with more informations.
Best regards
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[Arianna] [Buffagni] [Connecting to Collection Care Monitor]
[Conservator specialized in Easel Painting, Wooden Painting and Artifacts, and Contemporary materials]
[Italy]
Freelance/Private Practice/Self-employed/Independent
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Original Message:
Sent: 03-19-2025 08:59
From: Madeline Calise
Subject: Differences in acrylics
Good morning,
Would someone be able to explain the difference in acrylics when it comes to display mounts and pedestals? I always heard - acrylic is inert. But recently I heard that acrylic resins won't pass an oddy test. What is the difference and how can we make sure our products are safe? What is the difference between a 1 inch sheet of acrylic that is cut to size and a large cubic block of acrylic? Any explanation you can provide would be much appreciated.
Madeline Calise
Registrar and Artifacts Manager