Dielectric and Conductivity Properties of Poly(L-lactide) and Poly(L-lactide)/Ionic Liquid Blends

Pei Xu; Hao Guan Gui; Shan Zhong Yang; Yun Sheng Ding; Qian Hao

Macromolecular Research, Vol.22, No.3, 304-309, March, 2014

DOI10.1007/s13233-014-2038-5 Export Citation

Dielectric and Conductivity Properties of Poly(L-lactide) and Poly(L-lactide)/Ionic Liquid Blends

Pei Xu^†, Hao Guan Gui, Shan Zhong Yang, Yun Sheng Ding^†, and Qian Hao

School of Chemical Engineering, Hefei University of Technology, Hefei, 230009, P. R. China, Korea

E-mail:,

Dielectric relaxation spectroscopy (DRS) was employed to study the dielectric and conductivity properties of poly(L-lactide) and poly(L-lactide)/ionic liquid (IL) blends. The experimental dielectric data were analyzed within the formalism of complex permittivity. The results were discussed in terms of AC conductivity, αN relaxation corresponding to the longest normal mode motion, α relaxation originating from the segmental mode motion, and DC conductivity. The results revealed that the motion of the polymer chains governs the charge carrier transport. The temperature dependence of the relaxation times follows the Vogel-Tammann-Fulcher (VTF) equation. The incorporation of IL into the matrix accelerates the segmental (α) and normal mode (αN) motions and the conductivity, and increases the charge carrier movement of IL following the longest αN motion of chains, which led to an increase in the relaxation strength of the αN relaxation.

Keywords:poly(L-lactide);ionic liquid;conductivity;dielectric relaxation.

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[3] Pluta M, Galeski A, Alexandre M, Paul MA, Dubois P, J. Appl. Polym. Sci., 86(6), 1497 (2002)

[4] Jiang L, Zhang JW, Wolcott MP, Polymer, 48(26), 7632 (2007)

[5] Sessler GM, Eletrcets, Spinger-Verlag Press, Berlin (1980)

[6] Calleja RD, J. Non-Cryst. Solids., 172, 1413 (1994)

[7] Starkweather HW, Avakian P, J. Polym. Sci. Part B: Polym. Phys., 30, 637 (1992)

[8] Mudarra M, Diaz-Calleja R, Belana J, Canadas JC, Diego JA, Sellares J, Sanchis MJ, Polymer, 45(8), 2737 (2004)

[9] Mierzwa M, Floudas G, Dorgan J, Knauss D, Wegner J, J. Non-Cryst. Solids., 307, 296 (2002)

[10] Mijovic J, Sy JW, Macromolecules, 35(16), 6370 (2002)

[11] Ren JD, Urakawa O, Adachi K, Macromolecules, 36(1), 210 (2003)

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[13] Rogers RD, Seddon KR, Science., 302, 792 (2003)

[14] Kubisa P, Prog. Polym. Sci., 29, 3 (2004)

[15] Chiappe C, Pieraccini D, J. Phys. Org. Chem., 18, 275 (2005)

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[18] Ding YS, Tang HO, Zhang XM, Wu SY, Xiong RY, Eur. Polym. J., 44, 1247 (2008)

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[22] Davis RD, Bur AJ, McBrearty M, Lee YH, Gilman JW, Start PR, Polymer, 45(19), 6487 (2004)

[23] Corezzi S, Capaccioli S, Gallone G, Livi A, Rollay PA, J. Phys. Condens. Matter., 9, 6911 (1997)

[24] Stickel F, Fischer EW, Richert R, J. Chem. Phys., 102(15), 6251 (1995)

[25] Scott MP, Brazel CS, Benton MG, Mays JW, Holbrey JD, Rogers RD, Chem. Commun., 13, 1370 (2002)

[26] Neagu RM, Neagu E, Bonanos N, J. Phys. D: Appl. Phys., 30, 1551 (1997)