Sage Journals: Discover world-class research

Abstract

Sorption isotherms and dyeing rates of purified disperse dyes on polyester microfibers (fineness of 0.25-1.0 denier) from water have been measured at 95°C. The isotherms are curved and well described in terms of the dual-mode sorption model: Nemst-type partitioning and Langmuir sorption are concurrently operative. The effect of a diffusional boundary layer on the dyeing rate is small under the conditions; the microfibers were dyed in the form of a bulky two-ply yarn in a well stirred bath. Dyeing rates of a commercial dye are also measured at 110 and 130°C. For dyeing of a 0.32d fiber at 130°C, the amount of dye sorbed by the fibers attains a maximum value at an early stage and then decreases gradually. This phenomenon is explained in terms of the aqueous solubility of very fine dye particles. The relation between dye sorption behavior and the fine structure of the microfibers is discussed.

Get full access to this article

View all access options for this article.

References

Braun, H. , Particle Size and Solubility of Disperse Dyes, Rev. Prog. Color. 13, 62-72 (1983).

Dumbleton, J.H. , Bell, J.P. , and Murayama , T. , The Effect of Structural Changes on Dye Diffusion in Poly(ethylene Terephthalate), J. Appl. Polym. Sci. 12, 2491-2508 ( 1968 ).

Griesser, W. , and Tiefenbacher , H. , PES-Mikrofasern, Textilveredlung 28 , 88-96 (1993).

Kobsa, H. , Rubin, B. , Shearer, S.M. , and Schulz, E.M. , Using Optical Ray Tracing to Explain the Reduced Dye Yield of Microdenier Yarns, Textile Res. J. 63, 475-479 (1993).

Leadbetter, P. , and Dervan, S. , The Microfibre Step Change, J. Soc. Dyers Colour. 108 , 369-371 (1992).

McDowell, W. , and Weingarten, R. , New Experimental Evidence about the Dyeing of Polyester Materials with Disperse Dyes, J. Soc. Dyers Colour. 85, 589-597 (1969).

McGregor, R. , Peters, R.H. , and Varol, K. , The Physicochemical Hydrodynamics of Dyeing , J. Soc. Dyers Colour. 86, 437-445 (1970).

Murayama, T. , Dumbleton, J.H. , and Williams , M.L. , Viscoelasticity of Oriented Poly(ethylene Terephthalate), J. Polym. Sci. Part A-2 6, 787-793 (1968).

Ogasawara, S. , Fujimatsu, H. Kuroiwa, S. , and Igarashi, T. , Preparation of Microencapsulated Ultrafine Particles of Disperse Dye and Evaluation of Their Dyeing Properties , Ann. Rep. Jpn. Sci. Promo. Assoc. 43, 52-55 (1992).

10.

Prikryl, J. , Ruzicka, J. , and Burgert, L. , A New Method of Determining the Solubility of Disperse Dyes, J. Soc. Dyers Colour . 95, 349-351 ( 1979).

11.

Sakai, T. , Miyasaka, K. , and Ishikawa, K. , Sorption of Disperse Dye on Crystallite Surfaces of Poly(ethylene Terephthalate) , Sen'i Gakkaishi 34 , T475-T480 (1978).

12.

Schuler, M.J. , and Remington, W.R. , Mechanism of Absorption of Non-Ionic Dyes by Polyethylene Terephthalate, Disc. Faraday Soc. 16, 201-209 (1954).

13.

Shibusawa, T. , Arai, N. , Ueno, H. , and Nakamura, T. , Sorption Isotherms of Disperse Dyes on Various Polymers from Water, Sen'i Gakkaishi 48, 641-648 (1992).

14.

Shibusawa, T. , and Chigira, Y. , Dual-Mode Sorption of Nonionic Azo Dyes by Nylon 6, J. Polym. Sci. Part B Poly. Phys .30, 563-568 (1992).

15.

Shibusawa, T. , Endo, T. , Kameta, Y. , and Rys, P. Estimation of the Thickness of Diffusional Boundary Layer by Analyzing Rate of Dyeing Data and by Means of Multiple Membrane Layer Method, Sen'i Gakkaishi 42, T-671-T-679 (1986).

16.

Shibusawa, T. , and Nakamura, T. , Sorption of Anthraquinone Disperse Dyes by Nylon 6, Sen'i Gakkaishi 49, 576-579 (1993).

Dyeing Properties of Polyester Microfibers

Abstract

Get full access to this article

References