Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Solid polymer electrolytes based on chitosan and europium triflate

Full text
Author(s):
Alves, R. [1] ; Donoso, J. P. [2] ; Magon, C. J. [2] ; Silva, I. D. A. [2] ; Pawlicka, A. [3] ; Silva, M. M. [1]
Total Authors: 6
Affiliation:
[1] Univ Minho, Ctr Dept Quim, P-4710057 Braga - Portugal
[2] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
[3] IQSC Univ Sao Paulo, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of Non-Crystalline Solids; v. 432, n. B, p. 307-312, JAN 15 2016.
Web of Science Citations: 22
Abstract

Solid polymer electrolytes (SPEs) were obtained from chitosan plasticized with glycerol and contained europium (III) trifluoromethanesulfonate salt. The transparent samples were characterized by thermal analysis (DSC and TGA), impedance spectroscopy and electron paramagnetic resonance (EPR). The sample with 55.34 wt.% of europium triflate showed the best ionic conductivity of 1.52 x 10(-6) and 7.66 x 10(-5) S cm(-1) at 30 degrees C and 80 degrees C, respectively. The thermal analysis revealed that the degradation started at around 130-145 degrees C and the weight loss ranged from 20 to 40%. The DSC of the samples showed no T-g, but only a large endothermic peak that was centered between 160 and 200 degrees C. The EPR analysis showed a broadening of the EPR resonance lines with increasing europium contents in the chitosan membranes due to the magnetic dipole-dipole coupling and spin-spin exchange between the Eu2+ ions. Moreover, the electrolytes based on chitosan and europium triflate presented good flexibility, homogeneity, and transparency. (C) 2015 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
Grantee:Edgar Dutra Zanotto
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 13/19297-3 - Reflective properties of electrochromic devices with polymer electrolytes
Grantee:Agnieszka Joanna Pawlicka Maule
Support type: Regular Research Grants