The mechanism of generating photoelastic birefringence in methacrylic polymers

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 languageEnglish
Title of host publicationPolymer Preprints, Japan
Pages4060
Number of pages1
Volume54
Edition2
Publication statusPublished - 2005
Event54th SPSJ Symposium on Macromolecules - Yamagata, Japan
Duration: 2005 Sep 202005 Sep 22

Other

Other54th SPSJ Symposium on Macromolecules
CountryJapan
CityYamagata
Period05/9/2005/9/22

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Keywords

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

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Harada, T., Ishibashi, K., Ohkita, H., Tagaya, A., & Koike, Y. (2005). The mechanism of generating photoelastic birefringence in methacrylic polymers. In Polymer Preprints, Japan (2 ed., Vol. 54, pp. 4060)