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Polymer electrolytes based on poly(ethylene glycol) and cyanoresin
Author(s) -
Oh Kyung Wha,
Choi Ji Hyoung,
Kim Seong Hun
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.25382
Subject(s) - lithium perchlorate , ethylene carbonate , materials science , ethylene glycol , polymer chemistry , ionic conductivity , polymer , copolymer , propylene carbonate , thermal stability , peg ratio , electrolyte , chemistry , organic chemistry , composite material , electrode , finance , economics
Abstract Polymer electrolytes based on a mixed polymer matrix consisting of poly(ethylene glycol) (PEG) and cyanoresins with lithium salt and plasticizer were prepared with an in situ blending process to improve both the mechanical properties and the ionic conductivity (σ). The PEG/lithium perchlorate (LiClO 4 ) complexes, including blends of cyanoethyl pullulan (CRS) and cyanoethyl poly(vinyl alcohol) (CRV), exhibited higher σ's than a simple PEG/LiClO 4 complex when the blend compositions of CRS/CRV were 5 : 5 or 3 : 7 or than CRV alone. When the CRS/CRV blend was compared with a copolymer of cyanoethyl pullulan and cyanoethyl poly(vinyl alcohol) (CRM) in the same molar ratio, the σ values of the polymer electrolytes containing the CRM copolymer series were slightly higher than those of the CRS/CRV blends containing PEG/LiClO 4 complexes. Moreover, the addition of cyanoresin to PEG/LiClO 4 /(ethylene carbonate–propylene carbonate) polymer electrolytes provided better thermal stability and dynamic mechanical properties. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2402–2408, 2007