TY - JOUR
T1 - Crystallinity of poly(ethylene naphthalate) and its relation to terahertz absorption
AU - Odaka, Daisuke
AU - Ohki, Yoshimichi
AU - Mizuno, Maya
N1 - Publisher Copyright:
© 2017 The Japan Society of Applied Physics.
PY - 2017/3
Y1 - 2017/3
N2 - The crystallinity of poly(ethylene naphthalate) (PEN) was changed by thermal annealing and its effects on terahertz absorption spectra and X-ray diffraction patterns were examined. As a result, the intensity of a relatively sharp absorption peak at around 2.2 THz was found to be proportional to the crystallinity. As a plausible cause of this absorption, a lattice vibration, a torsional vibration, or their combination mode associated with (010) planes in crystal α of PEN is proposed. Therefore, the crystallinity of PEN can be estimated from the intensity of this absorption.
AB - The crystallinity of poly(ethylene naphthalate) (PEN) was changed by thermal annealing and its effects on terahertz absorption spectra and X-ray diffraction patterns were examined. As a result, the intensity of a relatively sharp absorption peak at around 2.2 THz was found to be proportional to the crystallinity. As a plausible cause of this absorption, a lattice vibration, a torsional vibration, or their combination mode associated with (010) planes in crystal α of PEN is proposed. Therefore, the crystallinity of PEN can be estimated from the intensity of this absorption.
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U2 - 10.7567/JJAP.56.032402
DO - 10.7567/JJAP.56.032402
M3 - Article
AN - SCOPUS:85014352147
SN - 0021-4922
VL - 56
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
IS - 3
M1 - 032402
ER -