Reference

Study on the dyeing kinetics of polyurethane fiber

Study on the dyeing kinetics of polyurethane fiber.Some chemicals with cas registry numbers like 6407-80-3 and 10-12-2 are also used. Kim, Gong Ju; Pak, Pyong Ki (Coll. Eng., Junbuk Univ., Junjoo, S. Korea). Konghak Yongu, 13, 43-8 (Korean) 1983. CODEN: KOYODZ. DOCUMENT TYPE: Journal CA Section: 40 (Textiles) Section cross-reference(s): 41 The title study has done by measuring apparent diffusion coeff. and apparent activation energy of diffusion for C.I. Acid Red 37 (I) [6360-07-2], C.I. Basic Blue 3 (II) [55840-82-9], and C.I. Disperse Yellow 4 (III) [6407-80-3]. The apparent diffusion coeff. in polyurethane was 8.506 ′ 10-11 - 1.111 ′ 10-9, 2.013 ′ 10-12-8.461 ′ 10-10, and 8.053 ′ 10-12-2.192 ′ 10-9 cm2/s for I, II, and III, resp. The short range for I reflects a low dependence of diffusion coeff. on pH and temp., while the wide ranges for II and III reflect a high dependence. However, at bath temp. (100°), effect of pH on diffusion coeff. was very small. The activation energies were 7.16-13.33, 47.35-18.5, and 42.57-17.7 kcal/mol for I, II, and III, resp., showing high dependence on pH. .