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  1. Home
  2. Browse by Author

Browsing by Author "Shaffie A.H."

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    Publication
    Characterization of chitosan-starch blend based biopolymer electrolyte doped with ammonium nitrate
    (American Institute of Physics Inc., 2018)
    Shaffie A.H.
    ;
    Azwani Sofia Ahmad Khiar 
    ;
    Faculty of Science and Technology
    ;
    Universiti Sains Islam Malaysia (USIM)
    Polymer electrolyte is an ionic conductor formed by dissolving salt in polymer host. In this work, starch/chitosan blend based polymer electrolyte was prepared with different weight percentage of Ammonium Nitrate (NH4NO3) via solution casting technique. The film was characterized by impedance spectroscopy HIOKI 3531- 01 LCR Hi-Tester to measure its ionic conductivity over a wide range of frequency between 50Hz-5MHz and at ambient temperature. Sample with 35 wt% of NH4NO3 shows the highest conductivity of (6.34 � 1.52) = 10-7 Scm-1. X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy were used to correlate the ionic conductivity results. � 2018 Author(s).
      4  32
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    Effect of BMITFSI to the electrical properties of chitosan/methylcellulose based polymer electrolyte
    (American Institute of Physics Inc., 2018)
    Misenan M.S.M.
    ;
    Shaffie A.H.
    ;
    Azwani Sofia Ahmad Khiar 
    ;
    Faculty of Science and Technology
    ;
    Universiti Sains Islam Malaysia (USIM)
    Blended polymer electrolyte of methylcellulose (MC) / chitosan were prepared with different weight percentage of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (BMIMTFSI) via solution casting technique. The film was characterized by impedance spectroscopy to measure its ionic conductivity. Samples with 45% of BMITFSI exhibit the highest conductivity of (1.51 ± 0.13) × 10-6 S cm-1at ambient. Dielectric data were analysed using complex permittivity and complex electrical modulus for the sample with highest conductivity. Dielectric data proved that the increase in conductivity is mainly due to the increase in number of charge carriers.
      2  25
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    Publication
    Effect of ionic liquid bmimno3 to chitosan-starch blend biopolymer electrolyte system
    (Trans Tech Publications Ltd, 2019)
    Shaffie A.H.
    ;
    Misenan M.S.M.
    ;
    Isa M.I.N.
    ;
    Khiar A.S.A.
    ;
    Faculty of Science and Technology
    ;
    Universiti Sains Islam Malaysia (USIM)
    ;
    Universiti Malaysia Terengganu (UMT)
    Chitosan-Starch blend biopolymer electrolyte system doped with different percentage of BMIMNO3 was prepared via solution casting technique. The crystalinity of the system was calculated using data extracted from x-ray diffraction (XRD). The film was characterized by impedance spectroscopy HIOKI 3531-01 LCR Hi-Tester to measure its ionic conductivity over a wide range of frequency between 50Hz-5MHz and at temperatures between 298 K and 378 K. The result exhibit the advantages of ionic liquid as a charge carrier and also revealed that addition of 5% of BMIMNO3 shows the highest conductivity of (2.26�0.96) x 10-4 Scm-1.Conductivity-temperature relationship indicate that the system seems to obey the Vogel-Tamman-Fulcher (VTF) behaviour. � 2019 Trans Tech Publications Ltd, Switzerland.
      3
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