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Heritage Science
Fig. 1 | Heritage Science

Fig. 1

From: A diagnostic tool for assessing the conservation condition of cellulose nitrate and acetate in heritage collections: quantifying the degree of substitution by infrared spectroscopy

Fig. 1

Infrared spectra of cellulose nitrate (DS 2.2) by μFTIR and ATR-FTIR, top. For μFTIR, the probe and reference peaks were νaNO2, \(\text{A}_{1653\,\text{cm}^{-1}}\) and νCOC, \(\text{A}_{1067\,\text{cm}^{-1}}\), respectively. For ATR-FTIR, the probe and reference peaks were νaNO2, \(\text{A}_{1636\,\text{cm}^{-1}}\) and νCOC, \(\text{A}_{1060\,\text{cm}^{-1}}\), respectively. Spectra obtained admixing microcrystalline cellulose (DS 0) and cellulose nitrate (DS 2.2), bottom

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