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Formation of polyaniline emeraldine base (PANI-EB) nanoparticles using Langmuir- Blodgett technique

Othman, Siti Amira and Radiman, Shahidan (2016) Formation of polyaniline emeraldine base (PANI-EB) nanoparticles using Langmuir- Blodgett technique. In: International Conference on Biosciences & Medical Engineering (ICBME2016), 10th –11th November 2016, Universiti Teknologi Malaysia.

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Abstract

Nanostructures of conducting polymers are of great significant due to their unique properties and application in nano-scale electronic and molecular devices. Polyaniline (PANI) is a conducting polymer which is environmentally stable and easy to prepare. This study intends to study the formation of nanostructures especially nanoparticles of polyaniline (PANI) using Langmuir- Blodgett (LB) technique of molecular deposition. Polyaniline monolayer that forms on water interface prepared by LB technique was deposited on Indium Tin Oxide (ITO) glass and followed by slow drying at room temperature. Decrease in the pH of the sub- phase in LB trough increases level of doping (protonation) of polyaniline emeraldine base to emeraldine salt. Variable presssure scanning electron microscope (VPSEM) reveal that nanoparticles are formed when there is an increase in the subphase pH compare to neutral subphase because of the interaction between PANI and funtionalized acid. This result is supported by XRD which shows that pH 5 have strong diffraction peaks due to the existence of well- defined layer structure. AFM shows that nanoparticles are formed on ITO surface after the deposition of PANI-EB with no significant difference in surface roughness for different pH. As a conclusion, well defined and good molecular arrangement of polyaniline nanoparticles can be achieved by good control of major factor that can influence the deposition process.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: PANI-EB; nanoparticles; langmuir-blodgett
Subjects: T Technology > TP Chemical technology > TP1080-1185 Polymers and polymer manufacture
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 13 Aug 2018 03:29
Last Modified: 13 Aug 2018 03:29
URI: http://eprints.uthm.edu.my/id/eprint/10162
Statistic Details: View Download Statistic

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