ATR-FTIR characterization of old pressure sensitive adhesive tapes in historic papers

Gorassini, Andrea; Adami, Gianpiero; Calvini, Paolo; Giacomello, Alessandro

doi:10.1016/j.culher.2016.03.005

Cited by 59 publications

(46 citation statements)

References 23 publications

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“…Considering the FMs, the spectrum of the filter (red), the outer (blue), and the inner (green) layers of MCA are reported in Figure 3 . All the three are characterized by the typical absorptions of PP as reported in the literature [ 22 ].…”

Section: Resultsmentioning

confidence: 99%

Is it Possible to Mechanical Recycle the Materials of the Disposable Filtering Masks?

2020

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In a singular period, such as during a pandemic, the use of personal protective masks can become mandatory for all citizens in many places worldwide. The most used device is the disposable mask that, inevitably, generates a substantial waste flow to send to incineration or landfill. The article examines the most diffused type of disposable face mask and identifies the characteristic of the constituent materials through morphological, chemical, physical, and thermal analyses. Based on these investigations, a mechanical recycling protocol with different approaches is proposed. Advantages and disadvantages of the different recycling solutions are discussed with considerations on necessary separation processes and other treatments. The four solutions investigated lead to a recycling index from 78 to 91% of the starting disposable mask weight. The rheological, mechanical, and thermo-mechanical properties of the final materials obtained from the different recycling approaches are compared with each other and with solutions present on the market resulting in materials potentially industrially exploitable.

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Section: Resultsmentioning

confidence: 99%

Is it Possible to Mechanical Recycle the Materials of the Disposable Filtering Masks?

2020

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“…Typical FTIR spectra for the coatings and the polypropylene target are presented in Figure . All of the peaks characteristic of the chemical structure of polypropylene are present for the PP target and are consistent with literature data . All of the coatings, both the deposited PP material and the PP containing carbon fillers, showed the most intense PP peaks (labeled 1–6 in Figure ).…”

Section: Resultsmentioning

confidence: 99%

Poly(propylene)/carbon composite thin films obtained by pulsed electron‐beam deposition

Jędrzejewski

Piwowarczyk

Jędrzejewska

et al. 2018

Plasma Processes & Polymers

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For the first time pulsed electron beam deposition (PED) was used to deposit thin films composed of polymer‐carbon composite material. The targets were polypropylene‐carbon (PP/C) composites, with different carbon fillers: carbon black, nanotubes, or graphene. It was confirmed that coatings with composite structure were obtained – the PED method enables complex structures, including nanotubes, to be ablated whole from the target, transported toward substrate, and incorporated into the polymer matrix. These breakthrough results can contribute significantly to improved understanding of the mechanism of electron beam ablation of polymer and composite materials, and open up new possibilities for the deposition of complex composite thin films for use in, for example, advanced sensor applications.

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“…In all of the studied PSTs, the typical infrared pattern of acrylic adhesives, widely used in PSAs formulations, is present ( Fig. 2B) (11). Conversely, meaningful differences in the composition of the PSTs are observed in the backings ( Fig.…”

Section: Significancementioning

confidence: 87%

Restoration of paper artworks with microemulsions confined in hydrogels for safe and efficient removal of adhesive tapes

Bonelli

Montis

Mirabile³

et al. 2018

Proc. Natl. Acad. Sci. U.S.A.

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The presence of pressure-sensitive tapes (PSTs) on paper artworks, either fortuitous or specifically applied for conservation purposes, is one of the most frequent and difficult issues encountered during restoration. Aged PSTs can damage or disfigure artworks, compromising structural integrity, readability, and enjoyment. Current procedures are often inherently hazardous for artistic media and paper support. Challenged by the necessity to remove PSTs from a contemporary and an ancient drawing (20th century, by artists da Silva and Hayter, and a 16th-century drawing of one figure from the Sistine Chapel by Michelangelo), we addressed this issue from a physicochemical perspective, leveraging colloid and interface science. After a characterization of the specific PSTs present on the artifact, we selected a highly water-retentive hydrogel as the host of 23% wt/wt of "green" organic solvents uniformly dispersed within the gel in the form of nanosized droplets. The double confinement of the organic solvent in the nanodroplets and into the gel network promotes a tailored, controlled removal of PSTs of different natures, with virtually no interaction with the solvent-sensitive artwork. This noninvasive procedure allows complete retrieval of artwork readability. For instance, in the ancient drawing, the PST totally concealed the inscription, "" ("from Michelangelo's hand"), a possibly false attribution hidden by a collector, which is now perfectly visible and whose origin is currently under investigation. Remarkably, the same methodology was successful for the removal of aged PST adhesive penetrated inside paper fibers of a drawing from the celebrated artist Lucio Fontana.

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ATR-FTIR characterization of old pressure sensitive adhesive tapes in historic papers

Cited by 59 publications

References 23 publications

Is it Possible to Mechanical Recycle the Materials of the Disposable Filtering Masks?

Is it Possible to Mechanical Recycle the Materials of the Disposable Filtering Masks?

Poly(propylene)/carbon composite thin films obtained by pulsed electron‐beam deposition

Restoration of paper artworks with microemulsions confined in hydrogels for safe and efficient removal of adhesive tapes

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