Total views : 236
Synthesis and Characterization of Polyaniline Doped with HCl, H2SO4 and PVA as Secondary Dopant for Toxic Gas (Ammonia) Sensor
In the present work, by simple chemical polymerization technique, H2SO4 (Sulphuric acid), HCl (Hydorochloric acid), poly (vinyl sulphonic acid) and PVA on PMMA substrate have been successfully synthesized PANI films for ammonia gas sensing. The polyaniline (PANI) thin films were synthesized by simple chemical polymerization technique, H2SO4 (Sulphuric acid), HCl (Hydorochloric acid), poly (vinyl sulphonic acid) and PVA on PMMA substrate as dopant. The ratio of monomer, dopant, and oxidant and reaction temperature has been optimized for better surface morphology of the synthesized PANI film. Scanning electron microscopy (SEM), ultraviolet-visible (UV-Vis), and Fourier transforms infrared spectroscopy (FTIR) is used for characterization of synthesized thin films of PANI. Also the response of the films towards ammonia gas (in the range from 20 to 250 ppm) is carried out. It was observed that these process parameters i.e. ratio of monomer, oxidants, doping acids, and deposition time and reaction temperature has major effect on the surface morphology of PANI film. The synthesized thin film structures of polyaniline doped with HCl, H2SO4 and PVA on polymethylmethacrylate (PMMA) shows the response to ammonia gas sensing in the range 20ppm-250ppm and can be used for ammonia sensing application.
Ammonia Gas Sensing, Chemical Polymerization, HCl, H2SO4 and PVA Dopant, Polyaniline, Polymer Composite, PMMA Substrate.
- Heeger AJ. Semiconducting and metallic polymers: the fourth generation of polymeric materials. Synthetic Metals. 2001 Nov; 125(1):23–42. Crossref
- Alan G. MacDiarmid, Synthetic metals: a novel role for organic polymers, Synthetic Metals. 2001 Nov; 125(1):11–22. Crossref
- Bartlett PN, Ling-Chung SK. Conducting polymer gas sensors: Part III. Results for four different polymers and five different vapours. Sens Actuators. 1989 Dec; 20(3):287–92. Crossref
- Agbor NE, Petty MC, Monkman AP. Polyaniline thin films for gas sensing. Sens Actuators. 1995 Oct; 28(3):173–9. Crossref
- Barker PS, Chen JR, Agbor NI, Monkman AP, Mars P, Petty MC. Vapour recognition using organic films and artificial neural networks. Sens. Actuators.1994 Jan; 17(2):143–7. Crossref
- Prasad GK, Radhakrishnan TP, Kumar DS, Krishna MG. Ammonia sensing characteristics of thin film based on polyelectrolyte template polyaniline. Sens Actuators. 2005 May; 106(2):626–31. Crossref
- Guadarrama A, Rodriguez-Mendez ML, de Saja JA, Rios JL, Olias JM. Array of sensors based on conducting polymers for the quality control of the aroma of the virgin olive oil. Sens and Actuators. 2000 Oct; 69(3):276–82. Crossref
- Schollhorn B, Germain JP, Pauly A, Maleysson C, Blanc JP. Influence of peripheral electron-withdrawing substituents on the conductivity of zinc phthalocyanine in the presence of gases. Part 1: reducing gases. Thin Solid Films. 1998 Aug; 326(1-2):245–50. Crossref
- Nicolas-Debarnot D, Poncin-Epaillard F. Polyaniline as new sensitive layer for gas sensor. Analytica Chimicaacta. 2003 Jan; 475(1-2):1–15. Crossref
- Li W, Wan M. Porous polyaniline films with high conductivity. Synth Met. 1998 Jan; 92(2):121–6. Crossref
- Matsuguchi M, Io J, Sugiyama G, Sakai Y. Effect of NH3 gas on the electrical conductivity of polyaniline blend films. Synth Met. 2002 Apr; 128(1):15–9. Crossref
- There are currently no refbacks.
This work is licensed under a Creative Commons Attribution 3.0 License.