Preparation of Conducting Polyester Textile by In Situ Polymerization of Pyrrole
Anilyn C. Macasaquit1,2 and Christina A. Binag1,3*
1Graduate School, University of Santo Tomas, Manila 1015
2Depatment of Physical Sciences, College of Science
Pamantasan ng Lungsod ng Maynila (University of the City of Manila), Manila 1002
3Research Center of the Natural Sciences, University of Santo Tomas, Manila 1015
corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
ABSTRACT
A method to produce conducting polypyrrole/polyester composite textile has been optimized using in situ chemical polymerization. The properties of the composite textiles were characterized by conductivity measurement (Four-point Probe Technique) and Scanning Electron Microscopy (SEM). Investigation of the preparation conditions was carried out by varying the dopant/oxidant concentration (0.2-2 M FeCl3), diffusion time (1-8 h), polymerization time (2-24 h) and polymerization temperature (5-60° C). The best result with respect to conductivity and coating uniformity was obtained when pyrrole was allowed to diffuse in the polyester textile for 2 h and polymerized for 6 h using 1.0 M FeCl3 at low temperature. The conductivity improved from 10-10 to 10-1 Scm-1 (RSD=0.35%, n=5). The prepared composite textile can find possible application in electromagnetic interference shielding, microwave attenuation, static electric charge dissipation and electrotherapy.
INTRODUCTION
The science of textile materials is continuously progressing. Nowadays, textile fibers broaden their field of use beyond traditional application. They are now being explored in different applications like heat generation (Varesano et al. 2009), electromagnetic interference shielding (Chen et al. 2007), electrotheraphy (Oh et al. 2004), electrostatic discharge protection (Dhawan et al. 2002) and sensor (Kincal et al. 1998). These applications are dependent on electrical conductivity; hence, these materials are called conducting textiles. . . . . . . .
REFERENCES
BHAT NV, SESHADRI D, RADHAKRISHNAN S. 2004. Preparation, characterization and performance of conductive fabrics: Cotton + Pani. Textile Research Journal (Proquest Science Journal) 74(2): 155-166.
CHANDRASEKHAR P. 1999. Conducting Polymers, Fundamentals and Applications: A Practical Approach, Composites (blends and copolymers). Boston: Kluwer Academic Pub, Chapter 10. p. 9-12.
CHEN HC, LEE KC, LIN JH, KOCH M. 2007. Comparison of electromagnetic shielding effectiveness properties of diverse conductive textiles via various measurement techniques. J Mat Proc Technol 192: 549-554.
DALL’ACQUA L, TONIN C, PEILA R, FERRERO F, CATELLANI M. 2004. Performance and properties of intrinsic conductive cellulose-polypyrrole textiles. Synthetic Metals 146: 213-221.
DALL’ACQUA L, VARESANO A, TONIN C. 2004. A study on the electrical conductivity decay of polypyrrole coated wool textiles. Polymer Degradation & Stability 89: 125-132.
DHAWAN SK, SINGH N, VENKATACHALAM S. 2002. Shielding behavior of conducting polymer-coated fabrics in X-band, W-band and radio frequency range. Synthetic Metals 129(3): 261-267.
GREGORY RV, KIMBRELL WC, KUHN HH. 1989. Conductive textiles. Synthetic Metals 28: C823-C835.
HAKANSSON E, KAYNAK A, LIN T, NAHAVANDI S, JONES T, HU E. 2004. Characterization of conducting polymer coated synthetic fabrics for heat generation. Synthetic Metals 144: 21-28.
KASSIM A, BASAR ZB, MAHMU E. 2002. Effects of preparation temperature on the conductivity of polypyrrole conducting polymer. Proc Indian Acad Sci (Chem Sci) 114(2): 155-162.
KAYNAK A, NAJAR SS, FOITZIK RC. 2008. Conducting nylon, cotton and wool yarns by continuous vapor polymerization of pyrrole. Synthetic Metals 158: 1-5.
KIM J, SOHN D, SUNG Y, KIM ER. 2003. Fabrication and characterization of conductive polypyrrole thin film prepared by in situ vapor phase polymerization. Synthetic Metals 132: 309-313.
KIM MS, KIM HK, BYUN SW, JEONG SH, HONG YK, JOO JS, SONG KT, KIM JK, LEE CJ, LEE JY. 2002. PET fabric/polypyrrole composite with high electrical conductivity for EMI shielding. Synthetic Metals 126: 233-239.
KINCAL D, KUMAR A, CHILD AD, REYNOLDS JR. 1998. Conductivity switching in polypyrrole-coated textile fabrics as gas sensors. Synthetic Metals 92: 53-56.
LI C, SONG Z. 1991. Diffusion-oxidative polymerization of transparent and conducting polypyrrole-poly(ethylene terephthalate) composites. Synthetic Metals 40(1): 23-28.
MALINAUSKOS A. 2001. Chemical deposition of conducting polymer. Polymer 42: 3957-72.
MEADOR, MA, HARDY-GREEN D, AUPING JV, GALER JR, FERRARA LA, PAPADOPOULOS DS, SMITH JW, KELLER DJ. 1997. Optimization of electrically conductive films: poly(3-methyl thiophene) and polypyrrole in kapton. J. of App. Pol. Sci. 63(7): 821-834.
NAJAR SS, KAYNAK A, FOITZIK R. 2007. Conductive wool yarns by continuous vapour phase polymerization of pyrrole. Synthetic Metals 157: 1-4.
OH KW, KIM SH, BAHK JH. 2004. Electrochemically synthesized polypyrrole and Cu-plated nylon/spandex for electrotherapeutic pad electrode. Journal of Applied Polymer Science 91: 1-8.
TAN SN, GE HL. 1996. Investigation into vapour-phase formation of polypyrrole. Polymer 37(6): 965-968.
TORRES-GOMEZ G, GOMEZ-ROMERO P. 1998. Conducting organic polymers with electroactive dopants, synthesis and electrochemical properties of hexacyanoferrate-doped polypyrrole. Synthetic Metals 98: 95-102.
VARESANO A, DALL'ACQUA L, TONIN C. 2005. A study on the electrical conductivity decay of polypyrrole coated wool textiles. Polymer Degradation & Stability 89: 125-132.
VARESANO A, LUCA F, RICARDO F. 2009. Multifunctional cotton fabrics. Synthetic Metals 159: 1082-89.
WALLACE G, SPINKS GM, TEASDALE PR, KANEMAGUIRE LAP. 2003. Conductive electroactive polymer: assembly of polypyrroles. CRC Press, Boca Raton, Florida. Chapter 2.
YIN W, LIU H, LI J, LI Y, GU T. 1997. Conducting composite films based on polypyrrole and crosslinked poly(styrene-butyl acrylate-hydroxyethyl acrylate). Journal of Applied Polymer Science 64(12): 2293-98.
