Study of polyaniline-silver nanocomposite as humidity sensor

Jolly Bhadra

doi:10.5339/qfarc.2018.eepd459

Abstract

Study of polyaniline-silver nanocomposite as humidity sensor

Highlights

(AgNO3) is dispersed in aqueous polyvinyl alcohol matrix (PVA) solution under constant stirring and heating at 60°C followed by photo reduction using UV-lamp having wavelength 390 nm for 24 hours
After exposing the above solutions with UV light for 24 hours, yellowish-red colloid of Ag nanoparticles with average diameters of ∼30 nm and ∼70 nm uniformly dispersed in PVA are obtained. 2.2
Synthesis of PANI-Ag nanocomposite and pure PANI: The PANI-Ag nanocomposite blend is synthesized by in-situ chemical polymerization (Figure-1) of aniline monomer in the colloid solution obtained from section 2.1

Summary

Jolly Bhadra*

Study of polyaniline-silver nanocomposite as humidity sensor J. Abdulkareem Center for Advanced Materials, Qatar University, Qatar Abstract In this piece of work focus on fabrication of resistive type humidity sensor using polyaniline-silver nanocomposite (PPVA-Ag). Four different nanocomposites using four concentrations of silver (0.5,1.0, 1.5 and 2.0 M) and polyaniline (PANI) dispersed in polyvinyl alcohol matrix (PVA). PANI, and PVA concentrations are kept constant. Thin PPVA-Ag film on interdigited gold electrode fingers gives excellent sensitivity towards humidity at room temperature.

Introduction

Findings

Methods