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Article

Assessing the Condition of Complex Poly-Material Artworks by Py-GC-MS: The Study of Cellulose Acetate-Based Animation Cels

by
Francesca Caterina Izzo
1,
Henk Van Keulen
2,* and
Alessandra Carrieri
3
1
Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, Via Torino 155/b, 30172 Venice, Italy
2
Cultural Heritage Agency of the Netherlands (RCE), Hobbemastraat 22, 1070 KA Amsterdam, The Netherlands
3
Italian Ministry of Culture, Conservator officer of Centro di Restauro (Li Punti, SS), Soprintendenza of Sassari and Nuoro, 07100 Sassari, Italy
*
Author to whom correspondence should be addressed.
Separations 2022, 9(5), 131; https://doi.org/10.3390/separations9050131
Submission received: 26 April 2022 / Revised: 18 May 2022 / Accepted: 19 May 2022 / Published: 23 May 2022
(This article belongs to the Special Issue Novel Applications of Separation Technology)
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Abstract

The material composition of a group of Rodovetri, hand-painted animation cels, made in the 1950s and 1960s for Italian television, has been determined by Flash Py-GC-MS, Thermally assisted Hydrolysis and Methylation-(Py-)GC-MS and GC-MS investigations, where, for the pyrolysis applications, the pyrolyzer is connected septum-less to the GC inlet. The condition of the selected animation cels was generally poor (yellowing, exudation, warping, cracking). The cels are made of plasticized cellulose acetate (CA) and decorated with alkyd paint. Exudating plasticizers from the CA support migrated into the paint; this has softened the paint layers and made the cels stick together. CA is known to be very unstable and easily subjected to degradation, which cannot be reversed, only slowed down by preventive conservation. Most of the cels are plasticized with bis(2-methoxyethyl) phthalate (DMEP) and triphenyl phosphate (TPP). The research shows a relationship between the degradation of CA and the presence of TPP and DMEP.
Keywords: pyrolysis; GC-MS; cellulose acetate; animation cels; Rodovetri; alkyd paints; ESCAPE pyrolysis; GC-MS; cellulose acetate; animation cels; Rodovetri; alkyd paints; ESCAPE

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MDPI and ACS Style

Izzo, F.C.; Van Keulen, H.; Carrieri, A. Assessing the Condition of Complex Poly-Material Artworks by Py-GC-MS: The Study of Cellulose Acetate-Based Animation Cels. Separations 2022, 9, 131. https://doi.org/10.3390/separations9050131

AMA Style

Izzo FC, Van Keulen H, Carrieri A. Assessing the Condition of Complex Poly-Material Artworks by Py-GC-MS: The Study of Cellulose Acetate-Based Animation Cels. Separations. 2022; 9(5):131. https://doi.org/10.3390/separations9050131

Chicago/Turabian Style

Izzo, Francesca Caterina, Henk Van Keulen, and Alessandra Carrieri. 2022. "Assessing the Condition of Complex Poly-Material Artworks by Py-GC-MS: The Study of Cellulose Acetate-Based Animation Cels" Separations 9, no. 5: 131. https://doi.org/10.3390/separations9050131

APA Style

Izzo, F. C., Van Keulen, H., & Carrieri, A. (2022). Assessing the Condition of Complex Poly-Material Artworks by Py-GC-MS: The Study of Cellulose Acetate-Based Animation Cels. Separations, 9(5), 131. https://doi.org/10.3390/separations9050131

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