title: Organisation in two series of low-dimensional polymer electrolytes with high ambient lithium salt conductivity.
abstract: The amphiphilic polymers poly[2,5,8,11,14-pentaoxapentadecamethylene(5-hexadecyloxy-1,3-phenylene)] I (abbrev. C16O5), its homologues C16On, n = 1-4, and its copolymers with C16O1 have been synthesised by two Williamson procedures. Method X gives polyether-esters; method Y gives pure polyethers. DSC, optical microscopy, small-to-wide angle X-ray diffraction and complex impedance spectroscopy have been used to investigate organisation and ionic conductivities of the C16On and the C16O5-C16O1 copolymer series and their complexes with LiClO4 and LiBF4. Four-component mixtures of the latter systems (polymers I) with polyoxytetramethylene-decamethylene copolymer (II) and an octadecyl-terminated ABA block copolymer (III) (interfacial stabiliser) ('type D' systems) gave high ambient conductivities ( > or = 10(-4) S cm(-1)) with low temperature dependence. Highest conductivities (8 x 10(-4) S cm(-1) at 20 degrees C) were observed with a type D system based upon C12C18O5X.
authors.affiliation: Dept of Engineering Materials, University of Sheffield, Sheffield, UK.
authors.forename: Jianguo
authors.initials: J
authors.lastname: Lui
authors.forename: Yungui
authors.initials: Y
authors.lastname: Zheng
authors.forename: Yen-Po
authors.initials: YP
authors.lastname: Liao
authors.forename: Xiangbing
authors.initials: X
authors.lastname: Zeng
authors.forename: Goran
authors.initials: G
authors.lastname: Ungar
authors.forename: Peter V
authors.initials: PV
authors.lastname: Wright