TY - JOUR
T1 - The order of addition of corn starch/lithium perchlorate/glycerol affects the optical, mechanical, and electrical properties of a solid polymer electrolyte
AU - Vernon-Carter, E. J.
AU - Alvarez-Ramirez, J.
AU - Bello-Perez, L. A.
AU - Roldan-Cruz, C.
AU - Garcia-Hernandez, A.
AU - Huerta, L.
N1 - Publisher Copyright:
© 2017, Springer-Verlag Berlin Heidelberg.
PY - 2017/11/1
Y1 - 2017/11/1
N2 - Optical, mechanical, and electric properties of solid polymer electrolyte (SPE) were affected by the order of addition of corn starch (S), lithium perchlorate (Li), and glycerol (G) during the preparation process. Four formulations were made based on whether Li was added prior to S gelatinization (simultaneous formulations SGLi and SLi+G) or whether it was added after S was gelatinized (sequential formulations SG+Li and S+LiG). Simultaneous formulations produced films with smaller elongation-at-break response (60–75%) relative to their sequential counterparts (75–82%). The simultaneous formulations exhibited higher electrical conductivity (∼0.7 mS cm−1) and capacitance (∼0.017 F cm−2) and electrochemical stability than the sequential formulations (∼0.9 mS cm−1 and ∼0.012 F cm−2) at room temperature. Results from FTIR and DSC analyses indicated that starch re-crystallization in casting phase could lead to variations on electrical properties for the different SPE formulations. It was postulated that Li cations replace hydrogen ions inside starch molecules, retarding the re-crystallization of starch molecules.
AB - Optical, mechanical, and electric properties of solid polymer electrolyte (SPE) were affected by the order of addition of corn starch (S), lithium perchlorate (Li), and glycerol (G) during the preparation process. Four formulations were made based on whether Li was added prior to S gelatinization (simultaneous formulations SGLi and SLi+G) or whether it was added after S was gelatinized (sequential formulations SG+Li and S+LiG). Simultaneous formulations produced films with smaller elongation-at-break response (60–75%) relative to their sequential counterparts (75–82%). The simultaneous formulations exhibited higher electrical conductivity (∼0.7 mS cm−1) and capacitance (∼0.017 F cm−2) and electrochemical stability than the sequential formulations (∼0.9 mS cm−1 and ∼0.012 F cm−2) at room temperature. Results from FTIR and DSC analyses indicated that starch re-crystallization in casting phase could lead to variations on electrical properties for the different SPE formulations. It was postulated that Li cations replace hydrogen ions inside starch molecules, retarding the re-crystallization of starch molecules.
KW - Corn starch
KW - Lithium perchlorate
KW - Order of addition
KW - Re-crystallization
KW - Solid polymer electrolyte
UR - http://www.scopus.com/inward/record.url?scp=85018367201&partnerID=8YFLogxK
U2 - 10.1007/s11581-017-2119-5
DO - 10.1007/s11581-017-2119-5
M3 - Artículo
SN - 0947-7047
VL - 23
SP - 3111
EP - 3123
JO - Ionics
JF - Ionics
IS - 11
ER -