Synthesis and characterization of poly(methyl methacrylate) using monofunctional polyhedral oligomeric silsesquioxane as an initiator |
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Authors: | Lei Liu Wenping Wang |
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Affiliation: | (1) School of Chemical and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China |
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Abstract: | POSS/PMMA composite was synthesized by atom transfer radical polymerization (ATRP) at 110 °C using commercial POSSCl as an
initiator and CuCl/2,2′-bipyridine as catalyst system. The structures of POSS/PMMA and POSSCl were characterized by Fourier
transfer infrared spectroscopy, Nuclear magnetic resonance spectroscopy, Ger permeation chromatography, X-ray diffraction
and X-ray photoelectron spectroscopy, which confirmed that Si–Cl bond on POSS cage could successfully initiate the ATRP of
methyl methacrylate, so there is only one POSS unit in a PMMA chain. The thermal properties of POSS/PMMA were investigated
by Differential scanning calorimetry and Thermogravimetric analysis, the results show that the incorporation of POSS cage
results in the enhancement of the glass transition temperature and the decomposition temperature of PMMA, which is mainly
attributed to the mono-dispersion of POSS in PMMA matrix at molecular lever. |
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Keywords: | Polyhedral oligomeric silsesquioxane (POSS) Atom transfer radical polymerization (ATRP) Poly(methyl methacrylate) Composites |
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