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Cellulose derivatives as solid electrolyte matrixes
Author(s) -
Regiani Anelise Maria,
de Oliveira Machado Gilmara,
LeNest JeanFrançois,
Gandini Alessandro,
Pawlicka Agnieszka
Publication year - 2001
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 - 10.1002/1521-3900(200110)175:1<45::aid-masy45>3.0.co;2-m
Subject(s) - ethylene oxide , hydroxyethyl cellulose , propylene oxide , glass transition , electrolyte , cellulose , ionic conductivity , materials science , oxide , polymer chemistry , polymer , chemistry , organic chemistry , copolymer , composite material , electrode , metallurgy
Cellulose derivatives like hydroxyethylcellulose (HEC) and carboxymethylcellulose (CMC) were submitted to the graftization reactions. The samples of HEC were grafted with monoisocyanate of poly(propylene oxide) (MPPO) and different diisocyanates of poly(ethylene oxide) (DPEO) and poly(propylene oxide) (DPPO) in the presence of LiClO 4 . CMC was grafted with MPPO. These polyssacharides based samples were characterized by IR, NMR and thermal analysis (DSC and TGA). The samples of grafted polyssacharides derivatives showed glass transition temperatures (Tg) of −40°C for HEC/MPPO, −33°C for HEC/DPEO, −10°C for HEC/DPPO and 24C for CMC/MPPO. The ionic conductivities of all samples were about 10 −7 ‐10 −6 S/cm at room temperature. The sample of CMC/MPPO presented conductivity value similar to HEC/DPPO but does not exhibit film‐forming characteristic indicating its use as solid polymer electrolytes only in the pellet form.