Effect of H₂SO₄ Treated TiO₂ Nano Fillers on the AC Conductivity of Hexanoyl Chitosan-Polystyrene-LiCF₃SO₃ Polymer Electrolytes

Abstract:

Hexanoyl chitosan exhibited solubility in tetrahydrofuran (THF) was prepared by acyl modification of chitosan. Polystyrene with molecular weight 280,000 g mol^-1 was chosen to blend with hexanoyl chitosan. LiCF₃SO₃ was employed as the doping salt. Untreated and H₂SO₄ treated TiO₂ was added as the filler. Films of hexanoyl chitosan-polystyrene-LiCF₃SO₃-TiO₂ polymer electrolyte were obtained by solution casting technique. The ac conductivity of the sample was calculated from the relation σ_ac = ε_oε_iω, where ε_o is the permittivity of the free space, the angular frequency, ω=2πf, and ε_i is the dielectric loss. The ac conductivity dispersion observed is analyzed using the Jonshers universal power law, σ (ω) = σ_dc + Aωⁿ where A is a pre-exponential constant and n is the power law exponent with value in the range 0 < n < 1. The temperature dependence of exponent n will then be interpreted using the existing theoretical models.

• Periodical: Advanced Materials Research (Volume 832)
• Pages: 228-232
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.832.228
• Online since: November 2013
• Authors: Tan Winie, Nur Syuhada Mohd Shahril, Nur Shazlinda Muhammad Hanif, Ri Hanum Yahaya Subban, Chin Han Chan
• Keywords: AC Conductivity, Hexanoyl Chitosan, Polystyrene, TiO₂, Universal Power Law

References

[1] Tan Winie, F.H. Muhammad, N.H.A. Rosli, Effect of anion size on the conductivity behaviour of hexanoyl chitosan-based polymer electrolytes, Advanced Materials Research 545 (2012) 317-320.

DOI: 10.4028/www.scientific.net/amr.545.317

[2] N.H.A. Rosli, F.H. Muhammad, R.H.Y. Subban, Tan Winie, Structural and electrical studies of hexanoyl chitosan-based electrolyte system, Materials Research Innovations 15(2) (2011) 94-96.

DOI: 10.1179/143307511x13031890748146

[3] Tan Winie, S. Ramesh, A.K. Arof, Studies on the structure and transport properties of hexanoyl chitosan-based polymer electrolytes, Physica B: Condensed Matter 404 (2009) 4308-4311.

DOI: 10.1016/j.physb.2009.08.004

[4] Tan Winie, A.K. Arof, Transport properties of hexanoyl chitosan-based gel electrolyte, Ionics 12 (2006) 149-152.

DOI: 10.1007/s11581-006-0026-2

[5] Tan Winie, A.K. Arof, Effect of various plasticizers on the transport properties of hexanoyl chitosan-based polymer electrolyte, Journal of Applied Polymer Science 101(6) (2006) 4474-4479.

DOI: 10.1002/app.24284

[6] Tan Winie, A.K. Arof, Dielectric behaviour and ac conductivity of LiCF3SO3 doped H-chitosan polymer films, Ionics 10 (2004) 193-199.

DOI: 10.1007/bf02382816

[7] Tan Winie, N.S.M. Hanif, C.H. Chan, A.K. Arof, Polymer electrolytes based on blend of hexanoyl chitosan and polystyrene. Submitted for publication in elsewhere.

DOI: 10.1007/s11581-013-0983-1

[8] A.M. Stephan, K.S. Nahm, Review on composite polymer electrolytes for lithium batteries, Polymer 47 (2006) 5952-5964.

DOI: 10.1016/j.polymer.2006.05.069

[9] Z. Zong, Y. Kimura, M. Takahashi, H. Yamane, Characterization of chemical and solid state structures of acylated chitosans, Polymer 41 (2000) 899-906.

DOI: 10.1016/s0032-3861(99)00270-0

[10] G.C. Psarras, E. Manolakaki, G.M. Tsangaris, Dielectric dispersion and ac conductivity in-iron particles loaded-polymer composite, Composites: Part A 34 (2003) 1187-1198.

DOI: 10.1016/j.compositesa.2003.08.002

[11] R. Murugaraj, G. Govindaraj, D. George, Ac conductivity and its scaling behavior in lithium and sodium bismuthate glasses, Material Letters 57 (2003) 1656-1661.

DOI: 10.1016/s0167-577x(02)01047-9

[12] Sh.A. Mansour, I.S. Yahia, F. Yakuphanoglu, Electrical conductivity and dielectric properties of Rhodamine B, Dye Pigments 87 (2010) 144.

DOI: 10.1016/j.dyepig.2010.03.011

[13] W. Jung, Ac conduction mechanisms of Gd1/3 Sr2/3 FeO3 ceramic, Physica B 403 (2008) 636-638.

DOI: 10.1016/j.physb.2007.09.067

[14] J.T. Gudmundsson, S.G. Svavarsson, S. Gudjonsson, H.P. Gislason, Frequency-dependent conductivity in lithium-diffused and annealed GaAs, Physica B 340 (2003) 324-328.

DOI: 10.1016/j.physb.2003.09.082

[15] L.J. Meng, M. Andritschky, M.P. Dos Santos, Zinc Oxide films prepared by dc reactive magnetron sputtering at different substrate temperature, Vacuum 45 (1994) 19-22.

DOI: 10.1016/0042-207x(94)90334-4