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International Journal of Interdisciplinary Research

Table 3 Descriptive statistics for L* a* b* coordinates of unexposed standards and specimens exposed to colorfastness to laundering testing

From: Black walnut, Osage orange and eastern redcedar sawmill waste as natural dyes: effect of aluminum mordant on color parameters

Dye/mordant

Standard/exposed to laundering

L

a

b

Color swatch

Mean (SD)

Mean (SD)

Mean (SD)

Black walnut

PAS mordant

Standard

61.32 (0.96)

11.59 (0.46)

24.70 (0.71)

Black walnut

PAS mordant

Exposed to laundering

60.01 (0.69)

10.43 (0.36)

20.50 (0.47)

Black walnut

No Mordant

Standard

57.59 (1.43)

10.49 (0.50)

22.12 (1.25)

Black Walnut

No mordant

Exposed to laundering

58.30 (0.97)

9.20 (0.39)

20.20 (0.44)

Osage orange

PAS mordant

Standard

69.49 (1.52)

8.37 (0.60)

56.03 (1.79)

Osage orange

PAS mordant

Exposed to laundering

72.06 (1.04)

7.03 (0.82)

58.70 (1.54)

Osage orange

No mordant

Standard

70.40 (1.67)

6.24 (0.39)

45.02 (1.76)

Osage orange

No mordant

Exposed to laundering

68.88 (0.52)

7.26 (0.49)

39.81 (0.63)

Eastern redcedar

PAS mordant

Standard

73.87 (1.39)

7.98 (0.19)

24.77 (0.74)

Eastern redcedar

PAS mordant

Exposed to laundering

71.33 (0.88)

10.04 (0.39)

23.02 (0.66)

Eastern redcedar

No mordant

Standard

71.06 (1.19)

9.08 (0.38)

14.93 (0.78)

Eastern redcedar

No mordant

Exposed to laundering

70.82 (1.38)

9.29 (0.43)

12.99 (0.50)

  1. Color swatches were generated with L* (lightness), a* (greenness-redness), b* (blueness-yellowness) rounded to the nearest whole number using http://www.workwithcolor.com/color-converter-01.htm. The standard and specimens were 100 % wool yarn. Potassium aluminum sulfate (PAS) was the mordant