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Sorption Isotherms and Thermodynamics of Direct Dye onto the Nano Poly(amidoamine) Dendrimer Treated Jute Yarn

[ Vol. 10 , Issue. 5 ]

Author(s):

Ali A. Zolriasatein*   Pages 673 - 681 ( 9 )

Abstract:


Background: In this study, the poly(amidoamine) (PAMAM) G-2 dendrimer was applied to the jute yarn.

Methods: Untreated and dendrimer treated jute yarns were then dyed with Direct Yellow 24. Thermodynamic parameters of dyed samples, free energy (ΔG°), the enthalpy (ΔH°), and the entropy (ΔS°) were also evaluated.

Results: Dendrimer treated jute yarn showed higher dye sorption compare to untreated jute yarn. The values of ΔH° and ΔG° indicated that the sorption process was exothermic and spontaneous at low temperature.

Conclusion: Freundlich isotherm was found to be the optimum isotherm for untreated and BET isotherm defined for dendrimer treated jute yarn.

Keywords:

Isotherm, thermodynamics, dyeing, direct dye, dendrimer, jute.

Affiliation:

Department of Textile Engineering, College of Technical and Engineering, Yadegar-e-Imam Khomeini (RAH), Shahrerey Branch, Islamic Azad University, Tehran

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