Synthesis of a Zero-Birefringence Optical Polymer by the Birefringent Crystal Dopant Method

Hisanori Ohkita, Masaki Mukoh, Akihiro Tagaya, Yasuhiro Koike

研究成果: Conference article査読

5 被引用数 (Scopus)

抄録

Birefringence induced by the orientation of polymer main chains during an injection-molding or extrusion processing restricts the application of optical polymers to optical devices that require maintaining the polarization state of incident light, We propose the "birefringent crystal dopant method" to compensate the birefringence of polymers by homogeneous doping with an opposite birefringent needle-like crystal. Strontium carbonate (SrCO 3) was selected for this method and synthesized, with particle lengths of 50-200nm and aspect ratios of 2-5. SrCO3 was doped into poly(MMA/BzMA= 78/22(wt./wt.)) film. The film was uniaxially drawn at 130°C and 4mm/min. For the first time, the positive birefringence of the drawn copolymer film at a wavelength of 633nm was compensated by doping with 0.3wt.% of SrCO3 without losing transparency and thermostability.

本文言語English
ページ(範囲)207-211
ページ数5
ジャーナルMaterials Research Society Symposium - Proceedings
771
出版ステータスPublished - 2003 11 10
イベントOrganic and Polymeric Materials and Devices - San Francisco, CA, United States
継続期間: 2003 4 222003 4 25

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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