Polarized terahertz spectroscopy for evaluation of deformed polyethylene

Kenta Watanabe; Tadao Tanabe; Yutaka Oyama; Koichi Seo

doi:10.2320/jinstmet.74.149

Polarized terahertz spectroscopy for evaluation of deformed polyethylene

Kenta Watanabe, Tadao Tanabe, Yutaka Oyama, Koichi Seo

Research output: Contribution to journal › Article › peer-review

Abstract

Polarized terahertz (THz) wave spectra were obtained applied for the evaluation of polymer chains in mechanically extensional-deformed ultrahigh-molecular-weight-polyethylenes (UHMWPEs). THz absorption band was seen around 2.2 THz which is due to the B_1u translational lattice vibration. For the deformed UHMWPE, the dichroism is appeared in the 2.2 THz band intensity. The absorption intensity is smaller in spectra with the THz wave electric polarization direction parallel to the deformation direction than that with the polarization direction perpendicular. The ratio of absorption intensity in each polarization directions is dependent on the amount of elongation strain. Based on the THz and XRD results, it is suggested that the THz nondestructive diagnosis of the tensile strain in deformed UHMWPE is possible based on the dichroism of B_1u band intensities on polarized THz wave spectroscopy.

Original language	English
Pages (from-to)	149-152
Number of pages	4
Journal	Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume	74
Issue number	3
DOIs	https://doi.org/10.2320/jinstmet.74.149
Publication status	Published - 2010 Mar
Externally published	Yes

Keywords

Mechanical property
Molecular vibration
Nondestructive inspection
Polymer material
Terahertz spectroscopy

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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10.2320/jinstmet.74.149

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title = "Polarized terahertz spectroscopy for evaluation of deformed polyethylene",

abstract = "Polarized terahertz (THz) wave spectra were obtained applied for the evaluation of polymer chains in mechanically extensional-deformed ultrahigh-molecular-weight-polyethylenes (UHMWPEs). THz absorption band was seen around 2.2 THz which is due to the B1u translational lattice vibration. For the deformed UHMWPE, the dichroism is appeared in the 2.2 THz band intensity. The absorption intensity is smaller in spectra with the THz wave electric polarization direction parallel to the deformation direction than that with the polarization direction perpendicular. The ratio of absorption intensity in each polarization directions is dependent on the amount of elongation strain. Based on the THz and XRD results, it is suggested that the THz nondestructive diagnosis of the tensile strain in deformed UHMWPE is possible based on the dichroism of B1u band intensities on polarized THz wave spectroscopy.",

keywords = "Mechanical property, Molecular vibration, Nondestructive inspection, Polymer material, Terahertz spectroscopy",

author = "Kenta Watanabe and Tadao Tanabe and Yutaka Oyama and Koichi Seo",

year = "2010",

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doi = "10.2320/jinstmet.74.149",

language = "English",

volume = "74",

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T1 - Polarized terahertz spectroscopy for evaluation of deformed polyethylene

AU - Watanabe, Kenta

AU - Tanabe, Tadao

AU - Oyama, Yutaka

AU - Seo, Koichi

PY - 2010/3

Y1 - 2010/3

N2 - Polarized terahertz (THz) wave spectra were obtained applied for the evaluation of polymer chains in mechanically extensional-deformed ultrahigh-molecular-weight-polyethylenes (UHMWPEs). THz absorption band was seen around 2.2 THz which is due to the B1u translational lattice vibration. For the deformed UHMWPE, the dichroism is appeared in the 2.2 THz band intensity. The absorption intensity is smaller in spectra with the THz wave electric polarization direction parallel to the deformation direction than that with the polarization direction perpendicular. The ratio of absorption intensity in each polarization directions is dependent on the amount of elongation strain. Based on the THz and XRD results, it is suggested that the THz nondestructive diagnosis of the tensile strain in deformed UHMWPE is possible based on the dichroism of B1u band intensities on polarized THz wave spectroscopy.

AB - Polarized terahertz (THz) wave spectra were obtained applied for the evaluation of polymer chains in mechanically extensional-deformed ultrahigh-molecular-weight-polyethylenes (UHMWPEs). THz absorption band was seen around 2.2 THz which is due to the B1u translational lattice vibration. For the deformed UHMWPE, the dichroism is appeared in the 2.2 THz band intensity. The absorption intensity is smaller in spectra with the THz wave electric polarization direction parallel to the deformation direction than that with the polarization direction perpendicular. The ratio of absorption intensity in each polarization directions is dependent on the amount of elongation strain. Based on the THz and XRD results, it is suggested that the THz nondestructive diagnosis of the tensile strain in deformed UHMWPE is possible based on the dichroism of B1u band intensities on polarized THz wave spectroscopy.

KW - Mechanical property

KW - Molecular vibration

KW - Nondestructive inspection

KW - Polymer material

KW - Terahertz spectroscopy

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ER -

Polarized terahertz spectroscopy for evaluation of deformed polyethylene

Abstract

Keywords

ASJC Scopus subject areas

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