Thermodynamics of the Solubility of Nonionic Dyes in Water and in Poly ( ethylene Terephthalate )

Thermodynamics of the Solubility of Nonionic Dyes in Water and in Poly ( ethylene Terephthalate )

The solubilities of six nonionic azo dyes in water and PET were determined and the thermodynamic parameters responsible for solubility calculated. The solubilities in water are small and governed by the mixing enthalpy ΔHM. Solubilities in PET are appreciably greater and none of the parameters ΔG F...

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Veröffentlicht in:Textile research journal 1991-11, Vol.61 (11), p.637-644
Hauptverfasser: Biedermann, W., Datyner, A.
Format: Artikel
Sprache:eng
Schlagworte:
Enthalpy
Ethylene
Mathematical analysis
Nonionic
Polyethylene terephthalates
Solubility
Solubility parameters
Thermodynamics
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Zusammenfassung:The solubilities of six nonionic azo dyes in water and PET were determined and the thermodynamic parameters responsible for solubility calculated. The solubilities in water are small and governed by the mixing enthalpy ΔHM. Solubilities in PET are appreciably greater and none of the parameters ΔG F , ΔHM , ΔSg, ΔS D predominate. The mixing enthalpy does not play any particular role in PET and, contrary to Hil debrand, cannot be predicted satisfactorily from solubility parameters.
ISSN:0040-5175
1746-7748
DOI:10.1177/004051759106101103