The mechanism of generating photoelastic birefringence in methacrylic polymers

Tomoaki Harada; Kayoko Ishibashi; Hisanori Ohkita; Akihiro Tagaya; Yasuhiro Koike

The mechanism of generating photoelastic birefringence in methacrylic polymers

Tomoaki Harada, Kayoko Ishibashi, Hisanori Ohkita, Akihiro Tagaya, Yasuhiro Koike

Department of Applied Physics and Physico-Informatics

Research output: Contribution to conference › Paper › peer-review

Abstract

Birefringence in polymers degrades the performance of optical devices. We focused on photoelastic birefringence, and proposed two methods of compensating for the birefringence - the random copolymerization method and the anisotropic molecule dopant method. Furthermore, we measured IR dichroism of methacrylic polymers which have various photoelastic coefficient. From the results of the IR dichroic ratio, we estimated that C=O bond moved in the perpendicular direction to the drawing direction and C-O-C bond moved in the parallel direction. Photoelastic coefficients of methacrylic polymers depends on the contribution to optical anisotropic by the motion of C=O and C-O-C bonds.

Original language	English
Number of pages	1
Publication status	Published - 2005 Dec 1
Event	54th SPSJ Symposium on Macromolecules - Yamagata, Japan Duration: 2005 Sep 20 → 2005 Sep 22

Other

Other	54th SPSJ Symposium on Macromolecules
Country	Japan
City	Yamagata
Period	05/9/20 → 05/9/22

Keywords

IR dichroism
Methacrylic polymers
Photoelastic birefringence
Poly(methyl methacrylate)
Zero-birefringence polymer

ASJC Scopus subject areas

Engineering(all)

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Cite this

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title = "The mechanism of generating photoelastic birefringence in methacrylic polymers",

abstract = "Birefringence in polymers degrades the performance of optical devices. We focused on photoelastic birefringence, and proposed two methods of compensating for the birefringence - the random copolymerization method and the anisotropic molecule dopant method. Furthermore, we measured IR dichroism of methacrylic polymers which have various photoelastic coefficient. From the results of the IR dichroic ratio, we estimated that C=O bond moved in the perpendicular direction to the drawing direction and C-O-C bond moved in the parallel direction. Photoelastic coefficients of methacrylic polymers depends on the contribution to optical anisotropic by the motion of C=O and C-O-C bonds.",

keywords = "IR dichroism, Methacrylic polymers, Photoelastic birefringence, Poly(methyl methacrylate), Zero-birefringence polymer",

author = "Tomoaki Harada and Kayoko Ishibashi and Hisanori Ohkita and Akihiro Tagaya and Yasuhiro Koike",

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T1 - The mechanism of generating photoelastic birefringence in methacrylic polymers

AU - Harada, Tomoaki

AU - Ishibashi, Kayoko

AU - Ohkita, Hisanori

AU - Tagaya, Akihiro

AU - Koike, Yasuhiro

PY - 2005/12/1

Y1 - 2005/12/1

N2 - Birefringence in polymers degrades the performance of optical devices. We focused on photoelastic birefringence, and proposed two methods of compensating for the birefringence - the random copolymerization method and the anisotropic molecule dopant method. Furthermore, we measured IR dichroism of methacrylic polymers which have various photoelastic coefficient. From the results of the IR dichroic ratio, we estimated that C=O bond moved in the perpendicular direction to the drawing direction and C-O-C bond moved in the parallel direction. Photoelastic coefficients of methacrylic polymers depends on the contribution to optical anisotropic by the motion of C=O and C-O-C bonds.

AB - Birefringence in polymers degrades the performance of optical devices. We focused on photoelastic birefringence, and proposed two methods of compensating for the birefringence - the random copolymerization method and the anisotropic molecule dopant method. Furthermore, we measured IR dichroism of methacrylic polymers which have various photoelastic coefficient. From the results of the IR dichroic ratio, we estimated that C=O bond moved in the perpendicular direction to the drawing direction and C-O-C bond moved in the parallel direction. Photoelastic coefficients of methacrylic polymers depends on the contribution to optical anisotropic by the motion of C=O and C-O-C bonds.

KW - IR dichroism

KW - Methacrylic polymers

KW - Photoelastic birefringence

KW - Poly(methyl methacrylate)

KW - Zero-birefringence polymer

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