Anisotropic molecule dopant method for synthesizing a zero-birefringence polymer

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

Research output: Contribution to journalArticle

33 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
DOIs
Publication statusPublished - 2001 Oct

Keywords

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

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Anisotropic molecule dopant method for synthesizing a zero-birefringence polymer'. Together they form a unique fingerprint.

  • Cite this