JSEMAT  Vol.5 No.4 , October 2015
Polyamide Fibers Covered with Chlorhexidine: Thermodynamic Aspects
Abstract: Results of dynamic and equilibrium of sorption of a reactive dye Remazol Brilliant Blue, and a bactericidal agent, Digluconate of Chlorhexidine over Polyamide fibers are presented with the aim of supplying the fiber with bactericidal properties. However, adsorption of Chlorhexidine onto Polyamide is scarce due to the lack of interactions between the reactive groups of the fiber and the antiseptic molecule. Therefore, in order to provide the fiber surface with anionic groups, fiber has been previously dyed with Remazol Brilliant Blue which increases the negative charge of the fiber surface due to the presence of its sulfonate end groups. Thermodynamic parameters of equilibrium sorption in the two situations, fiber/dye and fiber-dye/Chlorhexidine, have been analyzed, as function of the temperature, pH and concentration of the dye in the pretreatment. Results show that when sorption of Remazol Brilliant Blue reaches the value of about 50 mmol/ kg at the higher temperature and concentration tested, the amount of Chlorhexidine adsorbed exhibits its maximum value which is 6 mmol/kg. Both processes, adsorption of Remazol Brilliant Blue and adsorption of Chlorhexidine, fit well to Langmuir adsorption model, suggesting the existence of some kinds of specific interactions between adsorbent and adsorbate. Thermodynamic functions show that the interaction is endothermic and spontaneous in all the rage of temperature tested. The kinetic studies show that sorption of Remazol Brilliant Blue is better described by pseudo-first order model, while sorption of Chlorhexidine fits better to pseudo-second order model, and seems to be quicker process. According to the obtained results, chemical interaction between the vinyl-sulfone group of Remazol Brilliant Blue and the amine groups of Polyamide fiber, followed by electrostatic interactions between the guanine group of the Chlorhexidine and the sulfonate group of the dye must be considered in order to explain the adsorption process.
Cite this paper: Giménez-Martín, E. , López-Andrade, M. , Moleón-Baca, J. , López, M. and Ontiveros-Ortega, A. (2015) Polyamide Fibers Covered with Chlorhexidine: Thermodynamic Aspects. Journal of Surface Engineered Materials and Advanced Technology, 5, 190-206. doi: 10.4236/jsemat.2015.54021.

[1]   Richeldorf, H.R. (2003) The Role of Ring-Ring Equilibrium in Thermodynamically Controlled Polycondensations. Macromolecular Symposia, 199, 15-22.

[2]   Viers, B.D. (1999) Polymer Data Handbook. Oxford University Press, Inc., Oxford, 189.

[3]   Kamel, M.M., Hanna, H.L., El-Shishtawy, R.M. and Ahmed, N.S. (2001).Improving Nylon Dyeability by Using Redox System, Advances in Polymer Technology. Advances in Polymer Technology, 20, 237-247.

[4]   Brandrup, J. and Immergut, E.H. (1989) Polymer Handbook. Wiley and Sons, New York.

[5]   Peters, R.H. (1995) Textile Chemistry, Vol III. Elsevier Scientific Publishing Company, New York, 149-172.

[6]   Chen, L., Bromberg, L., Hatton, T.A. and Rutledge, G.C. (2008) Electrospun Cellulose Acetate Fibers Containing Chlorhexidine as a Bactericid. Polymer, 49, 1266-1275.

[7]   Giménez-Martín, E., López-Andrade, M., Ontiveros-Ortega, A. and Espinosa-Jiménez, M. (2009) Adsorption of Chlorhexidine onto Cellulosic Fibers. Cellulose, 16, 467-479.

[8]   Morton, P. (1996) Oral Hygiene Products and Practice, Products Components: Therapeutic Agents. Marcel Dekker Inc., New York, 219-329.

[9]   Gael, M., Patterson, S.S., Miller, C.H. and Newton, C.W. (2005) The Effect of Chlorhexidine Gluconate Irrigation on the Root Canal Flora of Freshly Extracted Necrotic Teeth, Oral Surgery, Oral Medicine. Oral Pathology, 53, 518-523.

[10]   Soleimani, G.A. and Tylor, J.A. (2006) Dyeing of Nylon with Reactive Dyes. Part 1. The Effect of Changes in Dye Structure on the Dyeing of Nylon with Reactive Dyes. Dyes and Pigments, 68, 109-117.

[11]   Dai, M. (1994) The Effect of Zeta Potential of Activate Carbon on the Adsorption of Dyes from Aqueous Solution. Journal of Colloid and Interface Science, 164, 223-228.

[12]   Espinosa-Jiménez, M., Giménez-Martín, E. and Ontiveros-Ortega, A. (1997) Adsorption of N-Cetylpyridinium Chloride on Leacril Fibers: Kinetic and Thermodynamics. Textile Research Journal, 67, 677-683.

[13]   Giménez-Martí, E., Ontiveros-Ortega, A., Espinosa-Jiménez, M. and Perea-Carpio, R. (2007) Electrokinetic Effect and Surface Free Energy Behavior in the Adsorption Process of a Reactive Dye onto Leacril Pretreated with Polyethyleneimine Iion. Journal of Colloid and Interface Science, 311, 394-399.

[14]   Ramos-Tejada, M.M., Ontiveros-Ortega, A., Giménez-Martín, E., Espionosa-Jiménez, M. and Molina-Díaz, A. (2006) Effect of Polyethyleneimine Ion on the Sorption of a Reactive Dye onto Leacril Fabric: Electrokinetic Properties and Surface Free Energy of the System. .Journal of Colloid and Interface Science, 297, 317-321.

[15]   Giménez-Martín, E. and Espinosa-Jiménez, M. (2005) Influence of Tannic Acid in Leacril/Rhodamine B System: Thermodynamics Aspects. Colloids and Surfaces, 270-271, 93-101.

[16]   Langmuir, I. (1918) The Adsorption of Gases on Plane Surface of Glass, Mica and Platinum. Journal of the American Chemical Society, 40, 1361-1402.

[17]   Espinosa-Jiménez, M., Padilla-Weigand, R., Ontiveros-Ortega, A., Perea-Carpio, R., Ramos-Tejada, M.M. and Chibowski, E. (2002) Investigation of the Polyamide 6.6 Dyeing with Acid Blue 45. Part. II. Journal Adhesion Science Technology, 16, 303-316.

[18]   Langergren, S. (1898) Zur Theorie der Sogenannten Adsorption Gelster Stoffe—Kungliga Svenska Vetenskapsakademiens. Handlingar, 24, 1-39.

[19]   Ho, Y.S. and McKay, G. (1998) Kinetic Models for the Sorption of Dye from Aqueous Solution by Wood. Process Safety and Environmental Protection, 76, 183-191.

[20]   Faibrother, F. and Mastin, H. (1924) CCCXII-Studies in Electro-Endosmosis, Part 1. Journal of the Chemical Society, 75, 2318.

[21]   Soleimani, G.A. and Tylor, J.A. (2006) Dyeing of Nylon with Reactive Dyes. Part 1. The Effect of Changes in Dye Structure on the Dyeing of Nylon with Reactive Dyes. Dyes and Pigments, 68, 109-117.

[22]   Ozacar, M. and Sengil, I.A. (2003) Adsorption of Reactive Dyes on Calcined Alunite from Aqueus Solution. Journal of Hazardous Materials, B98, 211-224.

[23]   Ho, Y.S. and McKay, G. (1998) Sorption of Dye from Aqueous Solution by Peat. Chemical Engineering Journal, 70, 115-124.