섬유

development of an optical-fibre sensor using a functional membrane

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 428
a new functional membrane which changes its reflectance spectra according to the ph of the test solution is described. a chloromethylstyrene (cms)/methylmethacrylate (mma) copolymer was chosen as the base for the immobilized reagent. a basic ion-exchanger was then added to the cms/mma copolymer. bromothymol blue (btb) was then immobilized on the copolymer. a functional membrane could then be fabricated in various shapes since chemical modification of cms/mma copolymer could be performed before casting the fabricated ph sensitive functional membrane showed a maximum reflectance change at a wavelength of 540 nm for ph changes from 4.0 to 9.0. dissolution of btb from the cms/mma copolymer was minimal so that good reproducibility of the reflectance change was obtained
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