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Carrier Dyeing of Polyester Fibre Part III – The Role of Water in Solvent Dyeing
Author(s) -
Roberts George A. F.,
Solanki Raman K.
Publication year - 1981
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1981.tb03583.x
Subject(s) - dyeing , polyester , solvent , diffusion , activation energy , aqueous solution , materials science , chemical engineering , polymer chemistry , chemistry , composite material , organic chemistry , thermodynamics , physics , engineering
The role of water as an auxiliary in solvent dyeing of polyester fibre has been studied. The addition of water results in a lowering of the glass transition temperature, an increase in the diffusion coefficient and reductions in the energy of activation of diffusion and the entropy of activation of diffusion. The increase in the diffusion coefficient is smaller at higher temperatures and varies from dye to dye, being related to the energy of activation of diffusion. These effects are similar to those reported previously for carriers in the aqueous dyeing of polyester fibre and demonstrate that the role of water in solvent dyeing is similar to that of a carrier in aqueous dyeing.