TY - JOUR
T1 - Comparative study of localized side group in poly(2,3 and 4 methyl cyclohexyl methacrylate)s. TSDC measurements
AU - Domínguez-Espinosa, Gustavo
AU - Sanchis, Maria J.
AU - Díaz-Calleja, Ricardo
AU - Pagueguy, Claudia
AU - Gargallo, Ligia
AU - Radic, Deodato
PY - 2005/11/28
Y1 - 2005/11/28
N2 - By means of thermal sampling techniques, the fine structure of the γ-relaxation zone of poly(methyl cyclohexyl methacrylate)s (P2MCHMA), (P3MCHMA), (P4MCHMA) were analyzed. Results reveal that in this relaxation zone, at least two peaks are present. These peaks are attributed to the cis and trans isomers. Loss permittivity of the polymers under study in this relaxation zone has been reproduced from the partial depolarization data by using the elementary relaxation times and activation energies. Results are in relatively good agreement with the experimental data previously obtained. Molecular mechanic calculations have been carried out in order to elucidate the characteristics and molecular origin of the relaxations observed in this zone. An interpretation of the height of the peaks associated to the cis- and trans-isomer in terms of strain energy (SE) have been carried out.
AB - By means of thermal sampling techniques, the fine structure of the γ-relaxation zone of poly(methyl cyclohexyl methacrylate)s (P2MCHMA), (P3MCHMA), (P4MCHMA) were analyzed. Results reveal that in this relaxation zone, at least two peaks are present. These peaks are attributed to the cis and trans isomers. Loss permittivity of the polymers under study in this relaxation zone has been reproduced from the partial depolarization data by using the elementary relaxation times and activation energies. Results are in relatively good agreement with the experimental data previously obtained. Molecular mechanic calculations have been carried out in order to elucidate the characteristics and molecular origin of the relaxations observed in this zone. An interpretation of the height of the peaks associated to the cis- and trans-isomer in terms of strain energy (SE) have been carried out.
KW - Molecular mechanics calculations
KW - Poly(methyl cyclohexyl methacrylate)s
KW - Thermally stimulated depolarization currents
UR - https://www.scopus.com/pages/publications/27844500219
U2 - 10.1016/j.polymer.2005.10.023
DO - 10.1016/j.polymer.2005.10.023
M3 - Article
AN - SCOPUS:27844500219
SN - 0032-3861
VL - 46
SP - 11351
EP - 11358
JO - Polymer
JF - Polymer
IS - 25
ER -