Anisotropic molecule dopant method for synthesizing a zero-birefringence polymer

A. Tagaya, S. Iwata, E. Kawanami, H. Tsukahara, Yasuhiro Koike

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

We have demonstrated the anisotropic molecule dopant method for synthesizing a zero-birefringence polymer that showed no orientational birefringence at any orientation degree of polymer chains. In this method, rod-like molecules such as trans-stilbene having opposite polarizability anisotropy to that of a host polymer were chosen to compensate orientational birefringence. Orientational birefringence of poly(methyl methacrylate) was completely compensated by doping with some types of anisotropic molecules. Compensation of orientational birefringence for drawn films of the zero-birefringence polymers was analyzed by the rotating parallel nicols method, and orientation functions for polymer main chains and the anisotropic molecules were determined by IR dichroism, which showed that both the polymer chains and the anisotropic molecules were oriented almost equivalently in the drawing process resulting in complete compensation at any draw ratio. Furthermore, the high transparency (37.2 dB/km) of the zero-birefringence polymer was confirmed by light scattering measurements.

Original languageEnglish
Pages (from-to)6117-6123
Number of pages7
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume40
Issue number10
Publication statusPublished - 2001 Oct

Fingerprint

Birefringence
birefringence
Doping (additives)
Molecules
polymers
Polymers
molecules
stilbene
Dichroism
Polymethyl methacrylates
polymethyl methacrylate
Light scattering
Transparency
dichroism
Anisotropy
light scattering
rods
anisotropy

Keywords

  • Anisotropic molecule
  • Birefringence
  • Dopant method
  • Optical device
  • Optical polymer
  • Orientation birefringence
  • Zero-birefringence

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Anisotropic molecule dopant method for synthesizing a zero-birefringence polymer. / Tagaya, A.; Iwata, S.; Kawanami, E.; Tsukahara, H.; Koike, Yasuhiro.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 40, No. 10, 10.2001, p. 6117-6123.

Research output: Contribution to journalArticle

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