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Synthesis and Characterization of UV‐Curable Poly(dimethylsiloxane) Dimethacrylate
Author(s) -
Thavornyutikarn Boonlom,
Janvikul Wanida
Publication year - 2008
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200850423
Subject(s) - photoinitiator , curing (chemistry) , materials science , methylene , polymer chemistry , chemical modification , methacrylic acid , chemical structure , infrared spectroscopy , nuclear magnetic resonance spectroscopy , proton nmr , nuclear chemistry , chemistry , copolymer , organic chemistry , polymer , composite material , monomer
This paper presents a new route to the synthesis of UV‐curable poly(dimethylsiloxane) dimethacrylate (PDMSDMA). PDMSDMA was essentially prepared by modification of poly(dimethylsiloxane), bis(3‐aminopropyl) terminated (PDMS‐NH 2 ) with methacrylic anhydride (MAA). The synthesized products were cured under UV in the presence of camphorquinone (CQ) used as a photoinitiator. The chemical structure of PDMSDMA samples was analyzed by FT‐IR and 1 H‐NMR spectroscopy. The 1 H‐NMR spectrum of PDMSDMA revealed new peaks at 3.20 ppm, corresponding to methylene protons in C H 2 NH, and 5.25 and 5.65 ppm, corresponding to vinylic protons in NHCOCCH 3 C H 2 . The chemical structure of the cured products and the degree of curing were determined by solid state 13 C CP/MAS NMR and FT‐IR (Micro‐ATR) spectroscopy. Various parameters, such as concentration of methacrylic anhydride, amount of camphorquinone, and curing time, were studied.