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International Journal of Interdisciplinary Research

Table 3 Colour strength values of woven fabrics dyed with natural colourant

From: Copper nano-sol loaded woven fabrics: structure and color characterization

Fabric sample Colour strength (K/S) values Fastness ratings
LF WF
Untreated polyester 1.24 7 4–5
Polyester treated with copper nano 1.96 6–7 4
Polyester treated with CuSO4 2.33 6–7 4–5
Untreated cotton 3.45 6–7 4
Cotton treated with copper nano 5.35 6–7 4–5
Cotton treated with CuSO4 5.87 6–7 4
Untreated P–C blend 2.47 6 4
P–C blend treated with copper nano 2.51 6–7 4
P–C blend treated with CuSO4 4.26 6–7 4
  1. K/S Colour Strength value, LF Light Fastness, WF Washing Fastness