Bulletin of materials science | |
Temperature-dependent ionic conductivity and transport properties of LiClO4-doped PVA/modified cellulose composites | |
Jagadish Naik4  H Chandrappa1  G K Nagaraja3  Sunil G Rathod4  R F Bhajantri1  Vidyashree Hebbar1  P K Pujari2  V Ravindrachary4  | |
[1] Department of Physics, Karnatak University, Dharwad 580 003, India$$Department of Physics, Karnatak University, Dharwad 580 003, IndiaDepartment of Physics, Karnatak University, Dharwad 580 003, India$$;Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India$$Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, IndiaRadiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India$$;Department of Chemistry, Mangalore University, Mangalagangotri 574 199, India$$Department of Chemistry, Mangalore University, Mangalagangotri 574 199, IndiaDepartment of Chemistry, Mangalore University, Mangalagangotri 574 199, India$$;Department of Physics, Mangalore University, Mangalagangotri 574 199, India$$Department of Physics, Mangalore University, Mangalagangotri 574 199, IndiaDepartment of Physics, Mangalore University, Mangalagangotri 574 199, India$$ | |
关键词: Percolation; transport properties; VTF model; ionic conductivity; Williamsâ€�?�Landelâ€�?�Ferry.; | |
DOI : | |
学科分类:材料工程 | |
来源: Indian Academy of Sciences | |
【 摘 要 】
This paper presents the investigation on physicochemical properties and ionic conductivity of LiClO4-doped poly(vinyl alcohol) (PVA)/modified cellulose composites. The percolative behaviour of LiClO4 with dc conductivity (ðœŽdc) for different LiClO4 weight fractions (p) related to transport dimensionality was also focused. The highest ionic conductivity of 9.79 Ã�? 10â€�??6 S cmâ€�??1 was observed for 20 wt% LiClO4 doping level at room temperature. The activation energies (ð¸g) were estimated using temperature-dependent conductivity, which follows the Arrhenius and Vogelâ€�?�Tammannâ€�?�Fulcher (VTF) relation. The dynamic fragility (ð‘�??) and activation energy (ð¸g) vs. ð‘�??g of polymer composites using equivalence of the both Williamsâ€�?�Landelâ€�?�Ferry (WLF) and VTF equations were also correlated. Transport properties such as travel time of ions between sites (ðœo), mobility (ðœ�?), diffusion coefficient (ð·) and number of transitions per unit time ð‘�?(ð¸) for normal cationic (Li+) hopping process of LiClO4-doped PVA/mCellulose composites have been investigated using the Rice and Roth model.
【 授权许可】
Unknown
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