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Keywords:

  • kinetics (polym.);
  • polyesters;
  • thermodynamics

Abstract

The effective management and control of mosquitoes in human living environments are crucial to minimize vector-borne diseases in homes. Pesticides, such as pyrethroids, are considered powerful tools in the control of mosquitoes and are intended to be incorporated into textiles. The adsorptive behavior of the pesticide ZX-1 [the main component is 1,1,1-trichloro-2,2-bis(p-chlorophenyl) ethane] in aqueous solution on polyesters fibers at different treatment times, temperatures, and concentrations are discussed in this article. The second-order model was found to be the most suitable for describing the kinetic diffusion process, and the intraparticle diffusion was the rate-controlling process. The Langmuir, Freundlich, and Dubinin–Radushkevich adsorption models were applied to these approaches. The results show that the Langmuir model appeared to fit the adsorption of ZX-1 on the polyester fibers better than other adsorption models. In addition, thermodynamic parameters, such as the free energy of adsorption (ΔG0), enthalpy (ΔH0), and entropy, were calculated. Positive values of ΔH0 and ΔG0 indicated the endothermic and nonspontaneous nature of ZX-1 adsorption on the polyester fibers. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011