TY - GEN
T1 - Comparative study of poly-dialkyl itaconates by TSDC and TW
AU - Espinosa, Gustave Domínguez
AU - Sanchis, M. J.
AU - Díaz-Calleja, R.
AU - Gargallo, L.
AU - Radiç, D.
PY - 2004
Y1 - 2004
N2 - The dielectric activity of poly-dimethyl itaconate (PDMI), poly-diethyl itaconate (PDEI) and poly dipropyl itaconate (PDPI) has been carried out by thermo stimulated discharge current (TSDC) techniques. Two relaxational zones are found. The TSDC global spectra corresponding to PDMI, PDEI and PDPI exhibit a moderate subglass relaxation, related to motion of ester side groups. Moreover, prominent peaks associated with the glass-rubber transition located at 368K, 320K and 308K, respectively, are observed. More detailed information about the fine structure of the subglass processes has been obtained by partial depolarization of poling samples (Thermal windows, TW). By fitting the experimental data to standard models, the kinetic parameters of the relaxations observed for each polymer, have been evaluated. Finally, a comparative study of the poly-dialkyl itaconates, are discussed in terms of molecular mobility.
AB - The dielectric activity of poly-dimethyl itaconate (PDMI), poly-diethyl itaconate (PDEI) and poly dipropyl itaconate (PDPI) has been carried out by thermo stimulated discharge current (TSDC) techniques. Two relaxational zones are found. The TSDC global spectra corresponding to PDMI, PDEI and PDPI exhibit a moderate subglass relaxation, related to motion of ester side groups. Moreover, prominent peaks associated with the glass-rubber transition located at 368K, 320K and 308K, respectively, are observed. More detailed information about the fine structure of the subglass processes has been obtained by partial depolarization of poling samples (Thermal windows, TW). By fitting the experimental data to standard models, the kinetic parameters of the relaxations observed for each polymer, have been evaluated. Finally, a comparative study of the poly-dialkyl itaconates, are discussed in terms of molecular mobility.
UR - https://www.scopus.com/pages/publications/15844408281
U2 - 10.1109/icsd.2004.1350298
DO - 10.1109/icsd.2004.1350298
M3 - Conference contribution
AN - SCOPUS:15844408281
SN - 0780383486
SN - 9780780383487
T3 - Proceedings of the 2004 IEEE International Conference on Solid Dielectrics ICSD 2004
SP - 95
EP - 98
BT - Proceedings of the 2004 IEEE International Conference on Solid Dielectrics ICSD 2004
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - Proceedings of the 2004 IEEE International Conference on Solid Dielectrics ICSD 2004
Y2 - 5 July 2004 through 9 July 2004
ER -