TY - JOUR
T1 - Photoluminescence in Polyamide/mica and Polyethylene/MgO Nanocomposites Induced by Ultraviolet Photons
AU - Fuse, Norikazu
AU - Okada, Masahide
AU - Ohki, Yoshimichi
AU - Murata, Yoshinao
AU - Sekiguchi, Yoitsu
AU - Tanaka, Toshikatsu
N1 - Funding Information:
The present work was partialy supported by the Joint Studies Program (2004 - 2007) of UVSOR Facility, Institute for Molecular Science, Okazaki, Japan. It was also supported by a Grant-in-Aid from Japan Society for the Promotion of Science (JSPS) for JSPS Fellows.
PY - 2008/10
Y1 - 2008/10
N2 - Nature of electronic states in the energy band is investigated by means of optical absorption and photoluminescence induced by vacuum ultraviolet photons for polyamide-6/mica and low-density polyethylene/MgO nanocomposites. The nanofiller loading does not affect the absorption spectra of polyamide samples. Contrary to this, two absorption bands are induced at around 5.0 and 6.2 eV by the nanofiller loading in polyethylene samples, but they are due to absorption by the fillers. A luminescence band is observed at around 3.0 eV in polyamide samples, whereas three luminescence bands are observed at around 4.3, 3.7, and 2.9 eV in polyethylene samples. However, for all the luminescence bands, neither emission nor excitation energies change by the addition of nanofillers. Decay profiles of all the luminescence bands are essentially unchanged by the nanofiller loading. Moreover, no new PL bands are induced in the observed wavelength range. These results indicate that localized states, at least as far as the ones that can emit luminescence photons with intensities more than the sensitivity of the present research, are not induced by the nanofiller loading.
AB - Nature of electronic states in the energy band is investigated by means of optical absorption and photoluminescence induced by vacuum ultraviolet photons for polyamide-6/mica and low-density polyethylene/MgO nanocomposites. The nanofiller loading does not affect the absorption spectra of polyamide samples. Contrary to this, two absorption bands are induced at around 5.0 and 6.2 eV by the nanofiller loading in polyethylene samples, but they are due to absorption by the fillers. A luminescence band is observed at around 3.0 eV in polyamide samples, whereas three luminescence bands are observed at around 4.3, 3.7, and 2.9 eV in polyethylene samples. However, for all the luminescence bands, neither emission nor excitation energies change by the addition of nanofillers. Decay profiles of all the luminescence bands are essentially unchanged by the nanofiller loading. Moreover, no new PL bands are induced in the observed wavelength range. These results indicate that localized states, at least as far as the ones that can emit luminescence photons with intensities more than the sensitivity of the present research, are not induced by the nanofiller loading.
KW - Electronic localized states
KW - Low-density polyethylene
KW - Photoluminescence
KW - Polyamide
KW - Polymer nanocomposites
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U2 - 10.1109/TDEI.2008.4656228
DO - 10.1109/TDEI.2008.4656228
M3 - Article
AN - SCOPUS:54949095794
SN - 1070-9878
VL - 15
SP - 1215
EP - 1223
JO - IEEE Transactions on Dielectrics and Electrical Insulation
JF - IEEE Transactions on Dielectrics and Electrical Insulation
IS - 5
M1 - 4656228
ER -