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Heritage Science

Table 2 Mechanical characteristics of the gels as obtained from the rheological measurements

From: Poly(vinylalcohol)-borate hydrogels with improved features for the cleaning of cultural heritage surfaces

PVA %

PEO %

Acetone %

Gc

RSD %

ωc (rad/s)

RSD %

Ï„c (s)

RSD %

\({\text{G}}_{0}^{{\prime }}\)

RSD %

3

0

30

295

21

0.11

26.02

58

23

3,033

4

3

1

30

272

19

0.09

26.10

67

22

2,649

13

3

2

30

150

43

0.08

16.97

82

16

1,401

10

3

3

30

160

10

0.06

5.06

100

5

1,852

11

3

1

0

283

13

0.49

2.4

13

2

1,135

11

2

0

0

33

3

1.44

0.6

4

1

108

19

2

0

30

74

5

0.36

7.6

18

5

369

6

  1. Mean values and relative standard deviations of G c crossover modulus, ω c crossover frequency, τ c apparent relaxation time, \({\text{G}}_{0}^{{\prime }}\) intrinsic elastic modulus).
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