Positron annihilation lifetime studies of free volume in a polymer electrolyte PEO complexed with NH4I

被引:0
|
作者
Haldar, B
Singru, RM [1 ]
Chandra, S
机构
[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India
[2] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India
关键词
positron annihilation; conducting polymers; free volume in polymers; electrical conductivity in polymer electrolytes; analysis of positron lifetime spectra;
D O I
暂无
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Positron lifetime spectroscopy has been applied to study the temperature dependence of free-volume properties in a solvent-free polymer-salt complex polyethylene oxide (PEO) doped with ammonium iodide (NH(4)I, with NH(4)(+)/EO approximate to 0.076) in the temperature range of 298-353 K. The observed lifetime spectra were resolved into three components and the longest lifetime, tau(3), was associated with the pick-off annihilation of ortho-positronium (o-Ps) trapped by the free volume. The lifetime component, tau(3), and its intensity, I(3), both showed a significant variation with temperature, which followed a different course in the heating and cooling cycle. Changes in the temperature coefficient of tau(3) and I(3) were observed at T approximate to 328 K, the melting point of the sample. This behaviour is correlated to the temperature variation of the electrical conductivity. (C) 1998 John Wiley & Sons, Inc.
引用
收藏
页码:969 / 976
页数:8
相关论文
共 50 条
  • [41] Free volume properties of interpenetrating polymer networks probed by positron annihilation
    He, Chun-qing
    Dai, Yi-qun
    Zhang, Shao-ping
    Wang, Bo
    Wang, Shao-jie
    Wang, Gui-you
    Hu, Chun-pu
    Wuhan Daxue Xuebao/Journal of Wuhan University, 2000, 46 (01): : 63 - 66
  • [43] Ion induced modification in free volume in PN-6 and PES polymers by positron annihilation lifetime studies
    Kumar, Rajesh
    Prasad, Rajendra
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2007, 256 (01): : 238 - 242
  • [44] POSITRON-ANNIHILATION LIFETIME STUDIES OF FREE-VOLUME CHANGES IN POLYCARBONATE UNDER STATIC TENSILE DEFORMATION
    RUAN, MY
    MOADDEL, H
    JAMIESON, AM
    SIMHA, R
    MCGERVEY, JD
    MACROMOLECULES, 1992, 25 (09) : 2407 - 2411
  • [45] Effect of gamma irradiation on the polymer electrolyte PEO-NH4ClO4
    Mrinal Sinha
    M. Maitra Goswami
    D. Mal
    T. R. Middya
    S. Tarafdar
    Udayan De
    Sandip Kumar Chaudhuri
    D. Das
    Ionics, 2008, 14
  • [46] Effect of gamma irradiation on the polymer electrolyte PEO-NH4ClO4
    Sinha, Mrinal
    Goswami, M. Maitra
    Mal, D.
    Middya, T. R.
    Tarafdar, S.
    De, Udayan
    Chaudhuri, Sandip Kumar
    Das, D.
    IONICS, 2008, 14 (04) : 323 - 327
  • [47] Studies on PEO-BMImHSO4 Solid Polymer Electrolyte
    Pundir, S. S.
    Mishra, Kuldeep
    Rai, D. K.
    SOLID STATE PHYSICS, VOL 57, 2013, 1512 : 1266 - 1267
  • [48] The use of positron annihilation lifetime spectroscopy in probing free volume of multicomponent polymeric systems
    Simon, GP
    TRENDS IN POLYMER SCIENCE, 1997, 5 (12) : 394 - 400
  • [49] Free-Volume analysis of PAMAM dendrimers by means of positron annihilation lifetime spectroscopy
    Yahsi, Ayse Yumak
    Uzun, Humeyra
    Altunkaya, Adalet Nur
    Unalkizilirmak, Arif
    Tulu, Metin
    Tav, Cumali
    Yahsi, Ugur
    JOURNAL OF MOLECULAR STRUCTURE, 2024, 1302
  • [50] Change in free volume parameters of polyacrylamide gels studied by positron annihilation lifetime measurement
    Ito, K
    Ujihira, Y
    Yamashita, T
    Horie, K
    POSITRON ANNIHILATION: ICPA-11 - PROCEEDINGS OF THE 11TH INTERNATIONAL CONFERENCE ON POSITRON ANNIHILATION, KANSAS CITY, MISSOURI, USA, MAY 1997, 1997, 255-2 : 375 - 377