Measurement of Colour Strength (K/S value)

Measurement of Colour Strength (K/S value)

The colour yield of both bleached and grafted dyed fibres was evaluated by light reflectance measurements using Macbeth CE-3100 spectrometer.
The colour strength (K/S) value was assesed using the Kubelka-Munk equation:

(1-R)(1-R)
K/S =-------------
2R
Where R is the decimal fraction of the reflectance of dyed fibre.