Conductivity enhancement via chemical modification of chitosan based green polymer electrolyte

N. N. Mobarak, Azizan Ahmad, Md. Pauzi Abdullah, N. Ramli, Mohd Yusri Abd Rahman

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The potential of carboxymethyl chitosan as a green polymer electrolyte has been explored. Chitosan produced from partial deacetylation of chitin was reacted with monochloroacetic acid to form carboxymethyl chitosan. A green polymer electrolyte based chitosan and carboxymethyl chitosan was prepared by solution-casting technique. The powder and films were characterized by reflection Fourier transform infrared (ATR-FTIR) spectroscopy, 1H nuclear magnetic resonance, elemental analysis and X-ray diffraction, electrochemical impedance spectroscopy, and scanning electron microscopy. The shift of wavenumber that represents hydroxyl and amine stretching confirmed the polymer solvent complex formation. The XRD spectra results show that chemical modification of chitosan has improved amorphous properties of chitosan. The ionic conductivity was found to increase by two magnitudes higher with the chemical modification of chitosan. The highest conductivity achieved was 3.6 × 10-6 S cm-1 for carboxymethyl chitosan at room temperature and 3.7 × 10-4 S cm-1 at 60 °C.

Original languageEnglish
Pages (from-to)161-167
Number of pages7
JournalElectrochimica Acta
Volume92
DOIs
Publication statusPublished - 1 Mar 2013

Fingerprint

Chemical modification
Chitosan
Electrolytes
Polymers
Chitin
Ionic conductivity
Electrochemical impedance spectroscopy
Hydroxyl Radical
Powders
Stretching
Amines
Fourier transforms
Casting
Nuclear magnetic resonance
Spectroscopy
Infrared radiation
X ray diffraction
Scanning electron microscopy
carboxymethyl-chitosan
Chemical analysis

Keywords

  • Carboxymethyl
  • Chitosan
  • Green polymer electrolyte
  • Ionic conductivity

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

Cite this

Conductivity enhancement via chemical modification of chitosan based green polymer electrolyte. / Mobarak, N. N.; Ahmad, Azizan; Abdullah, Md. Pauzi; Ramli, N.; Abd Rahman, Mohd Yusri.

In: Electrochimica Acta, Vol. 92, 01.03.2013, p. 161-167.

Research output: Contribution to journalArticle

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