Incorporation of graphite into iron decorated polypyrrole for dielectric and EMI shielding applications

Corrosion-resistant polypyrrole-banana carbon (PPy-BC) nanocomposites for protection against electromagnetic interference: a green approach

“…It was witnessed that all the PPy-BC nanocomposites showed very good optical absorption in the visible region, which can be explained using band theory of conducting polymers (CPs). The absorption band corresponding to 400 nm to 800 nm can be attributed to the transition from the valence band to conduction band and can be also due to the p-p* transition of the neutral polymer [33,43]. Small variations in the wavelength from PPy to MSB 4 PPy-BC nanocomposite confirms physical interactions between polypyrrole and banana carbon (BC).…”

“…Banana peels were dried under room temperature (303 K) and then it is chopped into smaller pieces. Dried banana peel was placed in the iron pan and burnt in the presence of air by closing the lid to get blackish powder [33]. The obtained product was cooled to the room temperature, crushed into fine powder using an agate mortar, and used in the synthesis of the composites.…”

“…The reflectance (R) and transmittance (T) of the PPy-BC composite samples were measured with respect to incident power [68]. The material absorption (A) was formulated with the help of R and T using the EM power balance relation (15) where R = (P r /P i ) 2 = (|S 11 or S 22 |) 2 and T = (P t / P i ) 2 = (|S 12 or S 21 |) 2 [33]. P t = transmitted power, P i = incident power, P r-= reflected power, and S ij (i = 1, 2; j = 1, 2; the S parameters of the shielding material for reflection and transmission).…”

Fabrication of polypyrrole/Cu(ii) nanocomposite through liquid/liquid interfacial polymerization: a novel catalyst for synthesis of NH-1,2,3-triazoles in PEG-400

“…Pi-conjugated polymer nanocomposite has become an attractive area in nanoscience due to their diverse applications in various fields such as super capacitors [1], battery electrodes [2], sensors [3], catalyst [4] and many other fields [5]. Addition of small quantity of nanofiller can dramatically improve various properties of the polymer nanocomposite due to which they have attracted a lot in the recent research fields [6]. Out of many conducting polymers, polypyrrole (PPy) is one of the most important conducting polymers due to its good redox behavior, electrical conductivity, ease of preparation and good environmental stability [7].…”

One-Dimensional Nanostructures of Polypyrrole for Shielding of Electromagnetic Interference in the Microwave Region

“…PPy for EMI shielding is commonly employed in globular morphology as a composite with metallic nanoparticles or carbonaceous materials [ 13 , 14 ]. However, PPy can be also used as a plain powder [ 15 , 16 ] or structure-forming material, e.g., epoxide composites [ 2 ], film-forming material on the surface of various objects, e.g., sawdust [ 17 , 18 ], silver sponges [ 19 ], zeolites [ 20 ], fabrics [ 21 , 22 , 23 , 24 , 25 ], wool [ 26 ] and membranes [ 27 ].…”