Effect of NH3 gas on the electrical conductivity of polyaniline blend films

Matsuguchi, Masanobu; Io, J.; Sugiyama, Go; Sakai, Yoshiro

doi:10.1016/s0379-6779(01)00504-5

Cited by 173 publications

(97 citation statements)

References 16 publications

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“…[7][8][9][10][11][12] Only a few studies have dealt with functional properties of the devices; most devices that have been reported have poor sensitivity and slow response times. [13][14][15][16] Many researchers believe [1,2,13] that more sophisticated technologies should be invented to synthesize the materials and to fabricate devices to solve the aforementioned problems. Additionally, it is not easy to fully transfer functional properties of the materials to sensing devices, since the procedures are affected by many factors, such as device structure, electrode material, preparation approach, and transferral and the reappearance efficiency of polymers with ordered nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Nanowire‐Structured Polyaniline Composite and Gas Sensitivity Studies

Wang

et al. 2006

Chemistry A European J

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To obtain organic nanowire sensors with high sensitivity and rapid response times, based on the inducement effect of surfactants during in situ polymerization, nanostructured polyaniline composites are obtained by using a chemical oxidation method by adding a small amount of surfactant. A casting method is employed on interdigitated carbon electrodes. The gas sensitivity to a series of chemical vapors is examined at room temperature. The results indicate that polyaniline with regular nanowire structure is obtained when succinic acid is added. The gas sensitivity and response rates of a film with nanowire structure are much better than those of conventional polyaniline films produced by means of organic solution spin coating methods. The film described in this work shows good selectivity to trimethylamine and other related gases and, the reaction being reversible with the use of high-purity nitrogen.

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Section: Introductionmentioning

confidence: 99%

Preparation of a Nanowire‐Structured Polyaniline Composite and Gas Sensitivity Studies

Wang

et al. 2006

Chemistry A European J

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“…The electrical conductivity pH switching behavior of the Ch-g-PANI was measured after doping and dedoping with different concentrations of HCl and NH 3 respectively at a fixed time. The conductivity of the grafted chitosan was increased with increasing dopant concentration (higher at pH 0 and very low at pH 10), indicating the formation of emeraldine salt to emeraldine base of the grafted PANI chain in the material [26,27]. All the results are summarized in the Table 3.…”

Section: Electrical Conductivity Measurementmentioning

confidence: 89%

Synthesis and characterization of electrical conducting chitosan-graft-polyaniline

Tiwari¹,

Singh²,

Marg³

2007

Express Polym. Lett.

104

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Abstract.A mucopolysaccharide, chitosan was grafted with polyaniline through oxidative-radical copolymerization using ammonium persulfate in acidic medium. The grafting conditions were extensively studied by varying grafting parameters. All the findings have been discussed and proposed a plausible mechanism for the graft copolymerization. The representative chitosan-graft-polyaniline (Ch-g-PANI) was characterized using UV-vis, FTIR, TGA, X-ray diffraction and Scanning electron microscopy taking chitosan as reference. Ch-g-PANI exhibited electrical conductivity, which increases with the extent of grafting onto chitosan backbone. Its electrical conductivity is further influenced by pH and showed pH switching electrical conduction behavior when exposed to NN3/HCl vapors. The application of conducting biomaterial such as Ch-g-PANI in the electronic devices especially for the fabrication of sensor devices would be attractive not only in terms of product cost and environmental safety but also from a materials science point of view.

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“…Electro polymerization of aniline derivatives has been widely investigated for the improvement of processibility and other properties of conductive PANI. Substituted PANIs are used to increase the processibility of the polymer which can be prepared by modifying the polymer chain in the following ways [7,8] H group on the PANI chain affects the properties of the parent PANI without substantially changing the conductivity and is of specific interest for several reasons such as solubility, environmental stability, and processibility.…”

Section: Introductionmentioning

confidence: 99%

Preparation Poly 2-hydroxy aniline Thin Film by Chemical Bath Deposition Technique for Ammonia Vapor Sensor

2017

IJSR

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Effect of NH3 gas on the electrical conductivity of polyaniline blend films

Cited by 173 publications

References 16 publications

Preparation of a Nanowire‐Structured Polyaniline Composite and Gas Sensitivity Studies

Preparation of a Nanowire‐Structured Polyaniline Composite and Gas Sensitivity Studies

Synthesis and characterization of electrical conducting chitosan-graft-polyaniline

Preparation Poly 2-hydroxy aniline Thin Film by Chemical Bath Deposition Technique for Ammonia Vapor Sensor

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