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- W2997601661 abstract "Abstract As paper is the base for (printed) documents-including bogus documents-it is often the subject of forensic investigations. Its properties depend on interactions between and within cellulose chains, mainly assigned to inter-and intramolecular hydrogen bonds. During paper degradation, the degree of polymerization of the cellulose chain changes. Vibrational spectroscopy has already been widely applied to resolve cellulose structure, crystalline phases and hydrogen bonds networks. The aim of the present research was to evaluate the possibility of differentiating between degraded papers by spectroscopic techniques. Five paper samples were artificially aged in a climatic chamber under 65% relative humidity in air at 90 °C for various periods up to 35 days. The conditioned samples – of differing durations of ageing – were then analyzed using infrared and UV/VIS spectroscopy. It was observed that the paper samples differed in the range 1000–1120 cm−1, 2860-2950 cm−1 and 1300-1380 cm−1 in infrared as a function of time of aging. Differences were also found in UV/VIS spectra, concerning bands of intensity of ca. 280 and 350 nm. 2D correlation analysis as well as the PCA method have allowed to distinguish between selected paper samples, through the specificity of the aging process that runs in them." @default.
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- W2997601661 date "2020-04-01" @default.
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- W2997601661 title "The sequence of changes observed during degradation process of paper by the use of UV/VIS and FTIR spectrometry with application of the PCA and 2D correlation method for forensic purposes" @default.
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- W2997601661 doi "https://doi.org/10.1016/j.molstruc.2019.127651" @default.
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