비의류제품

chemical modification of silicone elastomers for optics

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 448
polysiloxanes with si-h groups were chemically modified using vinyl compounds with phenyl, naphthyl, anthryl, and n-perfluorooctyl side groups by platinum catalysis (hydrosilylation). the introduction of aromatic groups increased the refractive index of poly(dimethyl siloxane) (n=1.403) up to n=1.70 depending on the degree of substitution and the kind of aromatic groups. similarly, the n-perfluorooctyl group reduced the refractive index to 1.35 therefore, the chemical modification enabled the authors to obtain polysiloxanes with refractive indices between 1.35 and 1.70. the modifications affected the glass-transition temperature of polysiloxanes, and the effects were analysed. the modified polysiloxanes may be of use in fabrication of very flexible optical fibres for purposes such as sensors, image guides, data links and optical fibres for communications over very short distances
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