Organic−Inorganic Poly(Methyl Methacrylate) Hybrids with Confined Polyhedral Oligosilsesquioxane Macromonomers
| Autor: | Oliver Toepfer, Daniel P. Neumann, Namita Roy Choudhury, Janis G. Matisons, and Andrew Whittaker |
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| Přispěvatelé: | Matisons, Janis Gunars, Choudhury, Namita Roy, Whittaker, A, Topfer,Oliver, Neumann,Daniel |
| Rok vydání: | 2005 |
| Předmět: |
Thermogravimetric analysis
Materials science General Chemical Engineering Organic Chemical Synthesis General Chemistry Poly(methyl methacrylate) Methacryloyl chloride chemistry.chemical_compound Differential scanning calorimetry Synthesis of Materials Polymerization chemistry Methacrylic acid Chemical Characterisation of Materials visual_art Polymer chemistry Materials Chemistry Copolymer visual_art.visual_art_medium Methyl methacrylate 030301 [FOR] |
| Zdroj: | Chemistry of Materials. 17:1027-1035 |
| ISSN: | 1520-5002 0897-4756 |
| Popis: | We herein report the synthesis of organic-inorganic hybrid poly(methyl methacrylate) containing 1 polyhedral oligosilsesquioxanes. Octakis(3-hydroxypropyldimethylsiloxy)octasilsesquioxane (OHPS) was synthesized from octakis(hydridodimethylsiloxy)octasilsesquioxane [Si8O12(OSiMe2H)(8), Q(8)M(8)(H)] following literature procedures. Octakis(tnethacryloxypropyldimethylsiloxy) octasilsesquioxane (OMPS) was synthesized via the reaction of methacryloyl chloride or methacrylic acid anhydride with OHPS, with the latter giving improved purity. Polymerization of OMPS with methyl inethacrylate using a dibenzoylperoxide initiator gave a highly cross-linked polymer. Characterization of the polymer was performed using Fourier transform IR spectroscopy, Si-29 NMR, differential scanning calorimetry, thermogravimetric analysis, atomic force microscopy, and transmission electron microscopy with energy-dispersive X-ray analysis. The polymer was found to be largely homogeneous. Increasing the OMPS concentration in the polymer gave increased decomposition and glass transition temperatures. |
| Databáze: | OpenAIRE |
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