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Abstract
Poly(2-nonyl-2-oxazoline)80-stat-poly(2-dec-91-enyl-2-oxazoline)20 and poly(2-dec-91-enyl- 2-oxazoline)100 can be synthesized from the cationic ring-opening polymerization of monomers that can be derived from fatty acids from renewable resources. These (co)poly(2-oxazoline)s can be crosslinked with di- and trifunctional mercapto compounds using the UV-induced thiol-ene reaction. The complex permittivity of the corresponding networks increases with the temperature and decreases with the network density. In a frequency range from 10-2 to 106 Hz and at temperatures ranging from -20 to 40 °C, the changes of the real part of the complex permittivity as well as the loss factor can be explained by interfacial polarization within the material. At a temperature of 20 °C and a frequency of 50 Hz, the permittivity of the crosslinked (co)poly(2-oxazoline)s covers a range from 4.29 to 4.97, and the loss factors are in the range from 0.030 to 0.093. The electrical conductivities of these polymer networks span a range from 5 × 10-12 to 8 × 10-9 S/m, classifying these materials as medium insulators. Notably, the values for the permittivity, loss factor and conductivity of these copoly(2-oxazoline)s are in the same range as for polyamides, and, hence, these copoly(2-oxazoline)-based networks may be referred to as "green" alternatives for polyamides as insulators in electronic applications.
Originalsprache | englisch |
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Aufsatznummer | 6 |
Seiten (von - bis) | 6:1-6:12 |
Fachzeitschrift | Polymers |
Jahrgang | 8 |
DOIs | |
Publikationsstatus | Veröffentlicht - 2016 |
Fields of Expertise
- Advanced Materials Science
Treatment code (Nähere Zuordnung)
- Application
- Experimental
- Basic - Fundamental (Grundlagenforschung)
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Funktionalisierung von anorganischen Partikeln und alternative Härtungsverfahren für Verbundwerkstoffe
1/01/13 → 31/12/16
Projekt: Forschungsprojekt