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Heritage Science

Table 1 Degree of polymerization in newspaper samples

From: A new reinforcement method for the conservation of fragile, double-sided, printed paper cultural relics

Newspaper samples

t (s)

V (cst)

η (cp.)

[η] (mL/g)

DP

Unaged

232.94

4.29

4.54

302

399

Dry heat aged 21d

131.62

2.42

2.55

63

71

Hygrothermal aged 21d

125.50

2.31

2.43

44

48

UV-light aged 21 d

135.96

2.50

2.64

77

88

Ancient 1922 newspaper

124.25

2.29

2.41

40

43

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