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Heritage Science
Fig. 4 | Heritage Science

Fig. 4

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. 4

Infrared spectra of cellulose triacetate (DS 2.97) by μFTIR and ATR-FTIR, top. For μFTIR, the probe and reference peaks were νOH, \(\text{A}_{3350\,\text{cm}^{-1}}\) and νCOC, \(\text{A}_{1050\,\text{cm}^{-1}}\), respectively. For ATR-FTIR, the probe and reference peaks were νOH, \(\text{A}_{3330\,\text{cm}^{-1}}\) and νCOC, \(\text{A}_{1030\,\text{cm}^{-1}}\), respectively. Spectra obtained admixing cellulose (DS 0) with cellulose acetate (DS 2.32), bottom

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