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Table 5 DS of cellulose acetate historical reel SCS0057, calculated on samples by μFTIR and ATR-FTIR

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

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Distance (cm)

0

0.9

1.8

2.7

3.5

5

5.5

5.8

6.8

8.5

DS by μFTIR

1.39

1.01

1.02

0.87

0.83

0.88

0.85

0.85

0.83

0.84

DS by ATR

1.36

0.79

0.76

0.82

0.80

0.78

0.83

0.83

0.79

0.78

  1. The sampling distances (cm) start from the outer turn