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Ionic conduction of cross‐linkable oligo(oxyethylene)‐branched poly(phosphazene)
Author(s) -
Tada Yuji,
Sato Moriyuki,
Takeno Noboru,
Kameshima Takashi,
Nakacho Yoshifumi,
Shigehara Kiyotaka
Publication year - 1994
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1994.021950214
Subject(s) - phosphazene , ionic conductivity , polymer chemistry , ionic bonding , propylene carbonate , polyphosphazene , conductivity , oligomer , polymer , materials science , plasticizer , chemistry , composite material , organic chemistry , ion , electrochemistry , electrode , electrolyte
A new cross‐linkable polyphosphazene [AEP7] in which allyl groups were introduced at the ends of the etheric side chains of the polymer was prepared. The LiClO 4 /AEP7 hybrids showed relatively high ionic conductivity of 7,9·10 −5 S·cm −1 at 25°C with 6 wt.‐% of LiClO 4 . The ionic conductivity of the hybrids remained unchanged before and after cross‐linking by UV‐irradiation. The dimensional stability or the mechanical strength of the hybrids was improved upon cross‐linking. Additionally, the cross‐linked AEP7(29)/propylene carbonate (PC)(60)/LiClO 4 (11) (wt.‐%) hybrids, in which PC was used as a plasticizer, showed an ionic conductivity as high as 3,1·10 −3 S·cm −1 at 25°C.