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 |
|---|---|
| Title of host publication | Polymer Preprints, Japan |
| Pages | 4060 |
| Number of pages | 1 |
| Volume | 54 |
| Edition | 2 |
| Publication status | Published - 2005 |
| 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 |
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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)