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Generation of graded index profile of poly(methyl methacrylate) by a photochemical reaction

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Abstract

Fabrication of a graded index profile was possible via photochemical reaction of cinnamoyl groups with 350 nm wavelength UV light to form crosslinked structures. Such structural change may induce the change in the refractive index. In order to generate graded index profile in the PMMA polymer optical fiber (POF) with cinnamoyl groups by photochemistry, a methyl methacrylate monomer containing a cinnamoyl functional group in the side chain were prepared. This monomer was then copolymerized with methylmethacrylate with various compositions not only to utilize advantages of poly(methyl methacrylate) but also to overcome the drawbacks of the cinnamate homopolymer. Changes of refractive indices were investigated with various contents of cinnamoyl group and varying irradiation time. Large change in the refractive index (Δ≈0.01)|and its proper profile shape (g≈?2.2)|can be obtained by changing irradiation time.

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Authors and Affiliations

  1. Center for Advanced Functional Polymers, Department of Chemical & Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-Dong, Yuseong-Gu, 305-701, Daejeon, Korea

    Hyun Chu Yun, Sang Hyuk Im, Duck Jong Suh & O Ok Park

  2. Department of Chemical Engineering, Woosuk University, 490 Hujung-ri, Samrae-eup, Wanju-gun, 656-701, Jeonbuk, Korea

    Moo Hyun Kwon

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  1. Hyun Chu Yun
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  2. Sang Hyuk Im
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  3. Duck Jong Suh
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  4. O Ok Park
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  5. Moo Hyun Kwon
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Yun, H.C., Im, S.H., Suh, D.J. et al. Generation of graded index profile of poly(methyl methacrylate) by a photochemical reaction. Macromol. Res. 11, 236–240 (2003). https://doi.org/10.1007/BF03218358

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  • DOI: https://doi.org/10.1007/BF03218358

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