Premium
Polymer Blend for Electrolyte and Electrode Coatings
Author(s) -
Lavall Rodrigo L.,
Trigueiro João Paulo C.,
Borges Raquel S.,
Ferlauto André S.,
Furtado Clascídia A.,
Silva Glaura G.
Publication year - 2005
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200551119
Subject(s) - carbon black , materials science , crystallinity , electrolyte , ethylene glycol , polymer , polymer chemistry , dispersion (optics) , chemical engineering , conductivity , polyvinyl alcohol , electrode , composite material , chemistry , natural rubber , physics , optics , engineering
Summary: The thermal and morphological properties of PEO/copolyether electrolyte and carbon black composite have been studied. A copolyether poly(propylene glycol)‐ block ‐poly(ethylene glycol)‐ block ‐poly(propylene glycol) bis(2‐aminopropyl ether) was used at 20 wt.‐% in relation to PEO in order the improve the carbon black dispersion through interaction with the amino end capped function. The polymer matrix presented semicrystalline structure and the addition of LiClO 4 and carbon black decreases significantly the crystallinity of the system. Sub‐micrometric dispersion of carbon black was observed. The conductivity results as a function of temperature exhibited a typical VTF behaviour for the electrolyte. Almost constant conductivities of 2 × 10 −4 S · cm −1 were observed for the composite with 5 wt.‐% of carbon black, in the range of temperature between 35 and 95 °C, which indicates a significantly contribution of electronic conduction.