Quantitative and qualitative assessment of VOCs emitted from cellulose acetate movie films by PTR-ToF-MS

Kammer, Julien; Truong, François; Boissard, Christophe; Soulié, Anne-Laure; Dupont, Anne-Laurence; Simon, Leïla; Gros, Valérie; Lavédrine, Bertrand

doi:10.1016/j.culher.2020.09.004

Cited by 7 publications

(4 citation statements)

References 29 publications

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“…[ 55 ] This is of strong interest to museums, libraries, and archives, to better preserve heritage objects that are sensitive to acid vapors (metal, ceramic, limestone, glass, among others) as well as emissive objects such as cellulose acetate‐based artifacts by protecting them from auto‐catalytic degradation. [ 80 ] The use of an adsorbent paper composite offers many advantages for this application, where the use of powdery or powdery materials presents risks of contamination or soiling of artifacts.…”

Section: Resultsmentioning

confidence: 99%

A Versatile Shaping Method of Very‐High Loading Porous Solids Paper Adsorbent Composites

Tignol,

Pimenta,

Dupont

et al. 2023

Small Methods

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Owing to their high porosity and tunability, porous solids such as metal–organic frameworks (MOFs), zeolites, or activated carbons (ACs) are of great interest in the fields of air purification, gas separation, and catalysis, among others. Nonetheless, these materials are usually synthetized as powders and need to be shaped in a more practical way that does not modify their intrinsic property (i.e., porosity). Elaborating porous, freestanding and flexible sheets is a relevant shaping strategy. However, when high loadings (>70 wt.%) are achieved the mechanical properties are challenged. A new straightforward and green method involving the combination softwood bleached kraft pulp fibers (S) and nano‐fibrillated cellulose (NFC) is reported, where S provides flexibility while NFC acts as a micro‐structuring and mechanical reinforcement agent to form high loadings porous solids paper sheets (>70 wt.%). The composite has unobstructed porosity and good mechanical strength. The sheets prepared with various fillers (MOFs, ACs, and zeolites) can be rolled, handled, and adapted to different uses, such as air purification. As an example of potential application, a MOF paper composite has been considered for the capture of polar volatile organic compounds exhibiting better performance than beads and granules.

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Section: Resultsmentioning

confidence: 99%

A Versatile Shaping Method of Very‐High Loading Porous Solids Paper Adsorbent Composites

Tignol,

Pimenta,

Dupont

et al. 2023

Small Methods

Self Cite

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“…To provide an accurate, real-time estimation of the amount of acetic acid accumulating during cellulose acetate films degradation, it was necessary firstly to identify the most common species released by the film during the degradation process. From literature sources [22][23][24][25][26], it was found that the average cellulose film degradation releases short organic acids (used for cellulose esterification, mainly acetic acid), various solvents using during the film manufacture, and residues of products used in conservation treatments (mainly butanol, used as antifungal treatment).…”

Section: Selection Of Gas Sensorsmentioning

confidence: 99%

High-Sensitivity Metal Oxide Sensors Duplex for On-the-Field Detection of Acetic Acid Arising from the Degradation of Cellulose Acetate-Based Cinematographic and Photographic Films

et al. 2022

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In this work, a system consisting of two resistive sensors working in tandem to detect and quantify the acetic acid released during the degradation of cellulose acetate-based ancient cinematographic and photographic films is presented. Acetic acid must be constantly monitored to prevent reaching concentrations at which autocatalytic degradation processes begin. The sensors are constituted by a thin layer of metal oxide (tungsten oxide and tin oxide) deposited over an interdigitated electrode capable of being heated, chosen to maximize the array response towards acetic acid vapors. The signals obtained from the sensor array are mathematically processed to reduce the background signal due to interferent gases produced during degradation of ancient cinematographic films. The sensor array reported a LOD of 30 ppb for acetic acid, with a linearity range up to 30 ppm. Finally, the sensor array was tested with different cinematographic and photographic film samples made of cellulose acetate, whose degradation state and acetic acid production was validated using the conventional technique (A-D strips). The presented array is suitable for remote monitoring large number of films in collections since, compared to the official technique, it has a lower detection limit (30 ppb vs. 500 ppb) and is much quicker in providing accurate acetic acid concentration in the film boxes (15 min vs. 24 h).

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“…Plastics in collections are challenging to preserve, as they tend to degrade faster than other materials found in artworks [9][10][11][12][13][14][15][16][17]. Synthetic organic/inorganic pigments also have stability issues [18][19][20][21][22][23][24][25] and their alteration in modern polymeric paints continues to be a subject of ongoing research in art conservation [26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Discoloration of Historical Plastic Objects: New Insight into the Degradation of β-Naphthol Pigment Lakes

et al. 2021

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Light is a determining factor in the discoloration of plastics, and photodegradation processes can affect the molecular structures of both the polymer and colorants. Limited studies focused on the discoloration of heritage plastics in conservation science. This work investigated the discoloration of red historical polyethylene (PE) objects colored with PR 48:2 and PR 53:1. High-density and low-density PE reference polymers, neat pigment powders, and historical samples were assessed before and after accelerated photoaging. The applied methodology provided insight into the individual light-susceptibility of polyethylenes, organic pigment lakes, and their combined effect in the photoaging of historical plastic formulations. After light exposure, both PE references and historical samples yellowed, PR53:1 faded, and PR 48:2 darkened; however, both organic pigments faded severely in the historical samples. This highlights the role played by the plastic binder likely facilitating the pigment photofading. Fourier transform infrared spectroscopy and mass spectrometry techniques—EGA-MS, PY-GC/MS, and TD-GC/MS—were successfully employed for characterizing the plastic formulations and degradation. The identification of phthalic compounds in both aged β-naphthol powders opens new venues for studies on their degradation. This work’s approach and analytical methods in studying the discoloration of historical plastics are novel, proving their efficacy, reliability, and potentiality.

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Quantitative and qualitative assessment of VOCs emitted from cellulose acetate movie films by PTR-ToF-MS

Cited by 7 publications

References 29 publications

A Versatile Shaping Method of Very‐High Loading Porous Solids Paper Adsorbent Composites

A Versatile Shaping Method of Very‐High Loading Porous Solids Paper Adsorbent Composites

High-Sensitivity Metal Oxide Sensors Duplex for On-the-Field Detection of Acetic Acid Arising from the Degradation of Cellulose Acetate-Based Cinematographic and Photographic Films

Discoloration of Historical Plastic Objects: New Insight into the Degradation of β-Naphthol Pigment Lakes

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