The Comparative Study on Vapor‐Polymerization and Pressure‐dependent Conductance Behavior in Polypyrrole‐hybridized Membranes

Abstract

In this study, commercially available cellulose membranes were hybridized with conjugated polymer via vapor‐phase polymerization using pyrrole and iron chloride as a monomer and oxidant, respectively. The iron (III) chloride layer dip‐coated on the hydrophilic cellulose surface oxidized the vaporized pyrrole monomer leading to the polypyrrole–cellulose hybrid membrane. The conductivity of hybrid membrane was optimized by varying the oxidant concentration and the monomer vapor exposure time. The various surface characterizations of polypyrrole–cellulose hybrid membrane show that the conductive polypyrrole layer was uniformly deposited onto the surface of cellulose fibrous networks unlike the polypyrrole–nylon hybrid membrane prepared in the similar way. The polypyrrole‐incorporated cellulose networks exhibits steeper electrical conductance increase over the vertical pressure than its nylon counterpart. Our result suggests that the polypyrrole–cellulose hybrid membrane can be applicable for a disposable high‐load pressure sensor.

Toward flexible and antibacterial piezoresistive porous devices for wound dressing and motion detectors

“…reported the use of electrodeposited polypyrrole (PPy) as prototypes for pressure sensitivity bruxism sensors, while Hanif et al . used hybrid membranes of cellulose and polypyrrole for high‐load pressure sensors . Li et al .…”

Preparation and characterization of hybrid polypyrrole nanoparticles as a conducting polymer with controllable size

“…Polymers were considered electrical insulators before the invention of conducting polymers. Conductive or conjugated polymers similar to those of inorganic semiconductors and metals have unique electrical and optical properties 1 , 2 . These properties are due to the alternating single and double bonds in the conjugated carbon chain, which create highly nonlocal, polarizable, electron-dense π bonds responsible for their electrical and optical behavior 3 .…”

A Novel Flexible Electrochemical Molecular Imprinted Sensor for the Determination of GABA in Serum of Depressed Mice

“…[31][32][33] Therefore, It has a wide range of applications in sensors. [34][35][36] In this study, pyrrole is selected as the functional monomer, which can form an unstable polymer with 2,4-dinitrofluorobenzene derivatives of GABA through non-covalent interaction such as hydrogen bond, π-π bond and electrostatic interaction, and then fix the polymer on the electrode by electropolymerization. Here, the self-polymerization effect of pyrrole is used as a crosslinking agent, which further simplifies the preparation process and makes the reaction on the electrode surface more simple and controllable.…”