
Update on Application of Response Surface Methodology-Part I 141
FIGURE 15 Effect of fabric treatment on color strength achieved using 2% omf C.I. Acid
Red 114.
11.8 FASTNESS PROPERTIES
11.8.1 HBP Treatment Fastness
The treated samples were subjected to five repeated washing fastness test at 60°C.
Figure 16 shows the washing fastness result of the undyed HBP treated and untreated
PET fabric and its effect on dyeability of PET fabrics. It is obvious that the extent of
color strength change was relatively small for treated and untreated PET fabrics.
FIGURE 16 Effect of washing fastness test on dyeability of treated and untreated PET fabrics.