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Journal articles
Dielectric study of local relaxations in dendritic macromolecules
Abstract : The aim of this work is to characterize the dielectric properties of amorphous dendritic macromolecules as a function of architectural complexity. By combining thermostimulated currents and dynamic dielectric spectroscopy, the dielectric permittivity has been obtained as a function of temperature, in a very broad frequency range (10−4–106 Hz). Generations g = 0 to g = 2 were investigated. The molecular origin of the quasi-Debye mode observed for g = 0 at low temperature is common to all generations: localized reorientations of aldehyde end groups. The interactions with the phosphorus/sulfur (P = S) dipoles are probably responsible for the broadening pointed out in upper generations.
Keywords :
Dielectric
Dendritic macromolecules
Cited literature [5 references]
https://hal.archives-ouvertes.fr/hal-01233429
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Wednesday, November 25, 2015 - 10:51:59 AM
Last modification on : Friday, April 9, 2021 - 10:16:04 AM
Long-term archiving on: : Saturday, April 29, 2017 - 3:58:04 AM
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Wednesday, November 25, 2015 - 10:51:59 AM
Last modification on : Friday, April 9, 2021 - 10:16:04 AM
Long-term archiving on: : Saturday, April 29, 2017 - 3:58:04 AM
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dantras_14311.pdf
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