Synthese de materiaux polymers transparents - Partie II Synthese et polymerisation d'acrylates et de methacrylates d'halogenoalkyle |
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| Institution: | 1. Department of Electrical and Electronics Engineering, Sri Krishna College of Engineering and Technology, Coimbatore, India;2. Department of Electronics and Communication Engineering, Prince Shri Venkateshwara Padmavathy Engineering College, Ponmar, Chennai 600 127, India;3. Department of Biomedical Engineering, Karunya Institute of Technology and Sciences, Coimbatore, India;4. Department of Electrical and Electronics Engineering, Sri Krishna College of Engineering and Technology, Coimbatore, India;5. Department of Mechanical Engineering, Anna University, Regional Campus Madurai, Madurai 625 019, India;6. Department of Mechatronics Engineering, Sri Krishna College of Engineering and Technology, Coimbatore, India;1. Department of Mechanical Engineering, B V Raju Institute of Technology, Vishnupur, Narsapur, Telangana, 502313, India;2. Department of Mechanical Engineering, St. Peter’s Institute of Higher Education and Research, Chennai 600054, Tamil Nadu, India;3. Department of Mechanical Engineering, Sri Sairam Engineering College, Chennai 600044, Tamil Nadu, India;4. Department of Chemistry, Sri Sairam Engineering College, Chennai 600044, Tamil Nadu, India;1. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation;2. N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation;3. Institute of Problems of Chemical Physics, Russian Academy of Sciences, 143432 Chernogolovka, Moscow Region, Russian Federation;4. National Research University Higher School of Economics, 101000 Moscow, Russian Federation |
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| Abstract: | Several fluorinated and chlorofluorinated acrylates and methacrylates were synthesized from the alcohols RFCH2OH with RF=CCl3, CHClCH2CCl3, (CF2CFCl)nCl, (C2F4)nH, CF3, C7F15 and C6F13CH2. The corresponding polymers were also studied for their application as transparent polymeric materials. For this purpose the refractive indices n20D of the monomers and the polymers were measured as were the Tg values of the polymers. A study of their infrared spectra shows to what extent these products could be utilized taking into consideration their absorption in the long wavelength range between 0.85 and 1.50 m. The refractive indices of these polymers, which are reduced when increasing the number of fluorine atoms in the molecule, and that of the Tg measured between 50 and 70° C for the fluorinated methacrylates, indicate a potential use of these polymers as sheathing materials for optical fibres. |
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