Fig. 9: FT-IR of the samples before aging and after 200 days of aging under different humidity conditions. | npj Heritage Science

Fig. 9: FT-IR of the samples before aging and after 200 days of aging under different humidity conditions.

From: Aging effects of relative humidity on palm leaf manuscripts and optimal humidity conditions for preservation

Fig. 9

Changes in the relative intensities of cellulose and hemicellulose characteristic peaks during aging under different humidity conditions: a I1730/I1505. b I1460/I1505. c I1370/I1505. d I1060/I1505. e Infrared spectra after 200 days. Relative intensities of characteristic peaks after 200 days: f I1730/I1505. g I1460/I1505. h I1370/I1505. i I1060/I1505.

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