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Table 4 Physical/chemical properties of nutria skins

From: Use of electrochemically activated aqueous solutions in the manufacture of fur materials

Parameter

Treatment no.

1

2

3

Test

pH of anolyte

2.9 ± 0.1

3.4 ± 0.1

3.9 ± 0.1

pH of catholyte

9.7 ± 0.2

11.2 ± 0.3

10.7 ± 0.3

Hydrothermal resistance after tanning (°C)

65.0 ± 1

69.0 ± 1

59.0 ± 1

63.0 ± 1

Mass content, (%) in the skin tissue of unconnected fatty substances after degreasing

3.62 ± 0.06

3.8 ± 0.06

3.3 ± 0.05

4.1 ± 0.07

 After greasing

17.4 ± 0.4

18.3 ± 0.5

17.9 ± 0.4

16.2 ± 0.4

 Chrome tanning agent on Cr2O3 basis

0.89 ± 0.02

0.83 ± 0.02

0.90 ± 0.02

0.93 ± 0.02

Breaking stress at the tear of an entire skin (N)

65.0 ± 3.3

64.0 ± 3.3

58.0 ± 3.0

62.0 ± 3.1

Total strain (%)

15.0 ± 1.4

13.2 ± 1.2

10.4 ± 0.9

12.7 ± 1.1

Frozen strain (%)

8.3 ± 0.6

9.7 ± 0.7

6.0 ± 0.4

6.2 ± 0.4

  1. The volumes of fatty substances and chrome oxide are based on a totally dry substance