Sensing characteristics of polypyrrole–poly(vinyl alcohol) methanol sensors prepared by in situ vapor state polymerization

Polydiphenylamine/Zeolite Y composites and electrical conductivity responses toward halogenated hydrocarbons

“…As the vapor concentration increases, the sensitivity of D-PDPA/30% Y_H + [80] increases. A similar result has been also found by Jiang et al 37 . They prepared a polypyrrole and polyvinylalcohol composite via in situ vapor state polymerization to detect methanol vapors.…”

Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites

“…Among ICPs, polypyrrole (PPy) is a particularly promising material because of its high electrical conductivity, chemical and environmental stability in the oxidized state, low ionization potential, electrorheological properties, electrochromic effect and relatively easy of synthesis [1][2][3][4][5][6]. In fact, PPy can be potentially used in new advanced technology areas, including electronic and optoelectronic nanodevices [7], sensors [8][9][10][11][12][13], supercapacitors [14,15], energy storage devices [1,7,16], surface coatings for corrosion protection [17], electromagnetic shielding applications [18][19][20], smart textiles [21,22] and even in medical applications [4,[23][24][25][26]. However, the poor mechanical performances and the difficult processability (insolubility and infusibility) [2,3,19,20,27,28] have hampered the use of PPy for technological applications.…”

Examining the use of TiO2 to enhance the NH3 sensitivity of polypyrrole films

“…For example, Lin et al combined the PPy with poly(vinyl alcohol) and other insulator polymers as matrix to improve the mechanical property and sensitivity of the PPy. [8][9][10] There are also some literatures reporting the great improvement achieved in sensitivity of ammonia gas vapors using PPy/oxide-iron composite films. [11][12][13] Titanium dioxide (TiO 2 ) is an n-type semiconductor, which has been extensively used for detecting H 2 , NH 3 , and SO 2 gases.…”