Gas sensing properties of a composite composed of electrospun poly(methyl methacrylate) nanofibers and in situ polymerized polyaniline

Electrospun Poly(methyl Methacrylate)/Polyaniline Blend Nanofibres with Enhanced Toxic Gas Sensing at Room Temperature

“…[28][29][30] Although an ideal gas sensor must have all ideal characteristics such as high sensitivity, good selectivity, low detection limit, good linearity, small hysteresis and response time, and long life cycle, efforts can be made to approach only some of these ideal characteristics and disregarding the others since the real applications usually do not require all perfect characteristics at once. There are several papers which report the use of different organic polymers as well as metal oxide-based polymer nanocomposites as efficient gas sensors for ammonia as well as HCl gases.…”

Electrospun Polyaniline/Poly(ethylene oxide) Composite Nanofibers Based Gas Sensor

“…This action causes an electron to transfer from the NH 3 molecules to the nitrogen atoms on the imine of PANI (ÀN + HÀ). Since PANI is a p-type semiconducting polymer, the transferred electrons recombine with holes as a majority of carriers are reduced in number; thus, decreasing the conductivity of PANI [39,40]. An organic acid, such as HCSA, employed as a dopant, can turn an insulating emeraldine-based PANI into a conductive PANI salt as the result of the addition of a proton (H + ) and a counterion for nitrogen atoms on the imine.…”

Nanostructured Conductive Polymers by Electrospinning

“…Coaxial PMMA/PANI composite nanofibers have also been fabricated using the electrospinning technique and an in situ polymerization method and were then transferred to the surface of a gold interdigitated electrode to construct a gas sensor (Figure 4.22) [102]. It was found that these nanofibers exhibited a high sensing magnitude towards triethylamine (TEA) vapors in the range 20-500 ppm (Figure 4.23).…”