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ACTIVATION OF TEXTILE POLYMERS

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Leader of the group :

Baranov Alexandr V. (on the right)
Senior scientist, Institute of Solution Chemistry;
Ph.D. 1988, Ivanovo Institute of Chemical Technology

Staff:

Yakunin Nikolai A. (in the center)
Senior scientist,  Institute of Solution Chemistry;
Ph.D. 1989, Institute of Chemical Technology

Prusova Svetlana M. (in the center)
Senior scientist, Instiute of Solution Chemistry;
Ph.D. 1990, Institute of Chemical Technology

Dymnikova Natalija M. (on the left)
Research associate, Institute of Solution Chemistry;
Ph.D. 1986, Ivanovo  Institute of Chemical Technology

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The problems of mass transfer of dyes in textile polymeric substrates are amongst the central problems in the theory of dyeing. The rate of diffusion of dye molecules into a fiber determines the duration of the dyeing process and itself is determined by numerous factors, one of the most important of them being the nature of intensifying agent applied.

At present, the choice of a particular intensifying agent is usually grounded on experimental tests. Further, there are no common views on the mechanisms of polymer activation by intensifying agents. One of the main reasons for this deficiency is the absence of a diffusion model which would have taken into account directly the parameters of solvation both of the dye and of the polymer. Known diffusion models, being at root of a physical nature, are invalid for the estimation of the influence of the chemical nature of intensifying agent on the mechanisms of dyeing of textile materials.

The research of this scientific group is directed at the development of a diffusion model based on the molecular kinetics concept for an elementary act of transmission translocation of diffusing particles. Thermodynamic characteristics of the interactions taking place in the three component system "textile polymer - dye - intensifying agent" are also involved.

The creation of such a model will permit forecasting of the efficiency of any conceivable substance as an intensifying agent for any dyeing process. The model (being applied to any particular dyeing system) is expected to give more precise knowledge of the mechanisms of dye diffusion into plasticized polymers by the estimation of the impact of the intensifying agent upon both the dye and the polymer.

Attention is concentrated upon the following issues:
Investigation of the mechanisms of cellulose and PET interactions with different solvents, and the mechanisms of plasticizing these polymers;
Research into the character of the distribution of diffusing substances inside the amorphous regions of textile fiber belonging to different structural levels;
Determination of the thermodynamic parameters of dye solvation and of dissolution in pure solvents (including the melts of carboxylic acid amides) and in the solutions of inorganic salts.

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Main publications

1. Baranov, A.V., Moryganov, A.P., and Melnikov, B.N. The estimation of polymer - solvent intermolecular interaction energies influence on the shrinkage of PET-fiber. Zhurnal prikladnoi khimii (J. Applied Chemistry), Vol.58 , No 5, (1985), P.1181-1183.
2. Yakunin, N.A., Baranov, A.V., Moryganov, A.P., and Melnikov, B.N. Calorimetric method for the determination of polymer glassing temperatures in solvents. Vysokomolekuljarnyje sojedinenija (High Molecular Compounds), Ser.A, Vol. 29, No 11, (1986), P.82-86.
3. Khudjakov, A.E., Baranov, A.V., Moryganov, A.P., and Melnikov, B.N. Cellulose textile materials plasticizing in the course of reactive dyes thermal setting. Izvestija vuzov. Khimija i khimicheskaja tekhnologija, Vol. 33, No 8, (1990), P.106-108.
4. Khudjakov, A.E., Baranov, A.V., Moryganov, A.P., and Melnikov, B.N. An effective mixed plasticizer system for reactive dye thermofixation on cellulose textiles. Amer. Dyestuff Rep., Vol. 80, No 9, (1991), P. 50-53.
5. Yakunin, N.A., Moryganov, A.P., and Melnikov, B.N. The investigation into the reasons of non-additive plasticizing influence of water-alcohol mixtures upon cellulose triacetyl. Vysokomolekuljarnyje sojedinenija (High Molecular Compounds), Ser.A, Vol. 33, No 4, (1991), P. 333-338.
6. Prusova, S.M., Baranov, A.V., and Moryganov ,A.P. The pecularities of disperse dyes solvation in solvents and amide melts. Izvestija vuzov. Khimija i khimicheskaja tekhnologija, Vol. 38, No 4-5, (1995), P.56-59.
7. Prusova, S.M., Dmnikova ,N.S., and Baranov, A.V. Investigation into disperse dye solvation. Prikladnaja khimija (J. Applied Chem.), Vol. 67, No 9, (1994), P.1578-1580 .
8. Baranov, A.V., and Moryganov, A.P. Regulation of the plasticizing ability of intensifiers: a new method to dye polyester fibers. Internat. J. Polymeric Materials, Vol.19, (1993), P. 175-180.
9. Baranov, A.V. Cellulose plasticizing: correlation between plasticizer physico-chemical parameters, plasticizer content in the fiber, and the efficiency of its action. Tekstilnaja khimija (Textile Chemistry), No 2 (4), (1993), P. 5-13 .
10. Smirnov, V.I., Krestov, G.A., and Baranov, A.V. Thermochemistry of non-aqueous solutions of 9,10-anthraquinone and its oxy- and amino- derivatives. Zhurnal fizicheskoi khimii (J. Phys. Chem.), Vol. 68, No 3, (1994), P. 97-100 .
11. Smirnov, V.I., and Baranov, A.V. Thermochemistry of dissolution and solvation of 9,10-anthraquinone disperse dyes in organic solvents. Tekstilnaja khimija (Textile Chemistry), No 1 (5), (1994), P. 25-32.
12. Smirnov, V.I., and Baranov A.V. The estimation of organic solvent influence on the state and diffusion permeability of PET. Khimicheskije volokna (Chemical Fibers), No 4, (1996), P. 37-40 .
13. Smirnov, V.I., Baranov, A.V., and Nuraneeva, M.N. Application of quantum chemistry method for the definition of thermodynamic parameters of PET dyeing with disperse dyes. Zhurnal prikladnoi khimii (J. Applied. Chem.), Vol. 61, No 10, (1996), P. 1654-1657.

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Address:
Institute of Solution Chemistry of the Russian Academy of Sciences,
1, Akademicheskaja Street Ivanovo 153045 Russia
Fax: 7 0932 378 509
e-mail: textile@ihnr.polytech.ivanovo.su
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