Crosslinked Poly(2-oxazoline)s as “Green” Materials for Electronic Applications
AbstractPoly(2-nonyl-2-oxazoline)80-stat-poly(2-dec-9′-enyl-2-oxazoline)20 and poly(2-dec-9′-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. View Full-Text
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Fimberger, M.; Tsekmes, I.-A.; Kochetov, R.; Smit, J.J.; Wiesbrock, F. Crosslinked Poly(2-oxazoline)s as “Green” Materials for Electronic Applications. Polymers 2016, 8, 6.
Fimberger M, Tsekmes I-A, Kochetov R, Smit JJ, Wiesbrock F. Crosslinked Poly(2-oxazoline)s as “Green” Materials for Electronic Applications. Polymers. 2016; 8(1):6.Chicago/Turabian Style
Fimberger, Martin; Tsekmes, Ioannis-Alexandros; Kochetov, Roman; Smit, Johan J.; Wiesbrock, Frank. 2016. "Crosslinked Poly(2-oxazoline)s as “Green” Materials for Electronic Applications." Polymers 8, no. 1: 6.