The mechanism of generating photoelastic birefringence in methacrylic polymers

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

Research output: Contribution to conferencePaperpeer-review


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
Number of pages1
Publication statusPublished - 2005 Dec 1
Event54th SPSJ Symposium on Macromolecules - Yamagata, Japan
Duration: 2005 Sep 202005 Sep 22


Other54th SPSJ Symposium on Macromolecules


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

ASJC Scopus subject areas

  • Engineering(all)


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