Table 5 Color measurements.

From: Utilization of affordable nanocomposites with outstanding antimicrobial activity in waterborne coatings

Tests

Samples

Commercial one

Group I

Group II

Nano-ZnO

ZnO/Si

Nano-CuO

CuO/Si

Nano-ZnO

ZnO/Si

Nano-CuO

CuO/Si

Color

L*

99.4

99.4

99.1

77.27

84.4

99.2

97.74

46.48

78.75

a*

−0.73

−0.62

−0.60

−0.70

−0.88

−0.58

−0.68

−0.54

0.46

b*

−0.51

−0.59

−0.75

−0.55

−0.47

0.32-

−0.03

−0.67

−0.23

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