Investigating diversity in polymer-based identity cards using ATR-FTIR spectroscopy and chemometrics

McGann, Jasmine; Willans, Meg; Sauzier, Georgina; Hackett, Mark J.; Lewis, Simon W.; McGinn, J.; Trubshoe, Tonya; Bronswijk, Wilhelm van

doi:10.1016/j.fsir.2020.100149

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…The broad peak at 1405–1450 cm –1 (υ 3 ) is attributed to the absorption peaks of the carbonate group. At low concentrations of PMMA-NPs (25 and 50 μg/mL), two peaks at 874 and 713 cm –1 corresponding to the calcite phase were observed (Figure a(ii–iv)) . The broad absorbance observed at 1405 cm –1 is assigned to the symmetric stretching vibration of carbonate (−CO 3 2– ) group .…”

Section: Resultsmentioning

confidence: 95%

“…At low concentrations of PMMA-NPs (25 and 50 μg/mL), two peaks at 874 and 713 cm −1 corresponding to the calcite phase were observed (Figure 4a(ii−iv)). 33 The broad absorbance observed at 1405 cm −1 is assigned to the symmetric stretching vibration of carbonate (−CO 3 2− ) group. 33 A characteristic small peak around 1794 cm −1 (Figure 4a(ii−v)) was attributed to >CO of the ester groups of PMMA interacting strongly with calcium ions.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…33 The broad absorbance observed at 1405 cm −1 is assigned to the symmetric stretching vibration of carbonate (−CO 3 2− ) group. 33 A characteristic small peak around 1794 cm −1 (Figure 4a(ii−v)) was attributed to >CO of the ester groups of PMMA interacting strongly with calcium ions. 34−36 The peak appearing at 1086 cm −1 is assigned to the vaterite phase (Figure 4a(v)).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Effect of Polymer Nano- and Microparticles on Calcium Carbonate Crystallization

et al. 2021

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Molecular and macromolecular templates are known to affect the shape, size, and polymorph selectivity on the biomineralization of calcium carbonate (CaCO3). Micro- and nanoparticles of common polymers present in the environment are beginning to show toxicity in living organisms. In this study, the role of plastic nanoparticles in the biomineralization of CaCO3 is explored to understand the ecological impact of plastic pollution. As a model study, luminescent poly(methyl methacrylate) nanoparticles (PMMA-NPs) were prepared using the nanoprecipitation method, fully characterized, and used for the mineralization experiments to understand their influence on nucleation, morphology, and polymorph selectivity of CaCO3 crystals. The PMMA-NPs induced calcite crystal nucleation with spherical morphologies at high concentrations. Microplastic particles collected from a commercial face scrub were also used for CaCO3 nucleation to observe the nucleation of calcite crystals on the particle surface. Microscopic, spectroscopic, and X-ray diffraction data were used to characterize and identify the nucleated crystals. The data presented in this paper add more information on the impact of microplastics on the marine environment.

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Section: Resultsmentioning

confidence: 95%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

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Effect of Polymer Nano- and Microparticles on Calcium Carbonate Crystallization

et al. 2021

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“…An additional analysis of polymers was performed by McGann et al, who investigated the diversity of polymerbased identity cards (IDs) using ATR-FTIR spectroscopy. 187 IDs, such as driver's licenses, are a key target for counterfeiting and pose both economic and security threats. Before being able to discriminate between legal and illegal documents, it is necessary to understand the sample population.…”

Section: T H Imentioning

confidence: 99%