Enhancing the Dyeability of Polypropylene Fibers by Melt Blending with Polyethylene Terephthalate

Table 4

The 𝐾/𝑆 values of dyed pure and blend fibers with three disperse dyes at boil and 130°C.

Sample	C. I. Disperse Blue 60		C. I. Disperse Yellow 211		C. I. Disperse Red 324
	𝐾/𝑆 (boil)	𝐾/𝑆 (130°C)	𝐾/𝑆 (boil)	𝐾/𝑆 (130°C)	𝐾/𝑆 (boil)	𝐾/𝑆 (130°C)
PP	0.98	1.65	3.13	7.27	1.27	4.8
B12	16.54	19.49	19.45	22.74	19.18	21.58
B15	17.46	20.82	19.23	23.96	19.96	22.57
B20	18.37	21.56	20.92	23.64	19.87	22.60
B25	18.57	21.34	21.85	24.08	20.16	22.45
B30	19.08	22.96	21.64	24.53	20.50	22.65
PET	20.3	24.88	22.15	26.18	21.09	25.62