Keigo Mori, Tomofumi Seki, Naoshi Hirai, Yoshimichi Ohki,
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| Frequency spectra of apparent absorption coefficient α at frequencies from 0.5 to 5.0 THz (= 17-167 cm-1), measured for epoxy resin and its composites with various kinds of inorganic fillers; E: pristine without any fillers; AO: Al2O3, S: SiO2, BN: BN, MO: MgO, MH: Mg(OH)2, and TR: TiO2; M: micro-sized filler, NM: nano-sized and micro-sized fillers, and N: nano-sized filler. |
https://aip.scitation.org/doi/abs/10.1063/1.5117182
Optical absorption spectra in a frequency range from 0.5 to 5.0 THz were measured in several epoxy resin nanocomposites with and without co-addition of micro-sized fillers, aiming at obtaining important information on intermolecular interactions between filler and polymer. As a result, significantly large absorption appears when both micro-sized MgO and nano-sized SiO2 fillers were added in epoxy resin. Similar but smaller absorption is also found in an epoxy resin composite with nano-sized TiO2 fillers.
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