Polymerization of N-methyl B-methyl amino borazine
-
Hicham Moutaabbid
und
Mohammed Moutaabbid
Abstract
A large quantity of high-quality poly[N-methyl B-methyl amino borazine] was synthesized via a solventless method from the monomer 1,3,5-trimethyl-2,4,6-tri(methyl amino)borazine. The thermal polymerization profile was investigated with differential scanning calorimetry (DSC), Fourier transform infrared (FTIR), size exclusion chromatography (SEC), gas chromatography, and mass spectrometry. A polymerization mechanism involving the condensation reaction of two –N(H)CH3 groups releasing methylamine was proposed and compared with the literature. As a result of cross-linking via the aminomethyl moiety, the cured polymer exhibited a molecular weight Mn of 790 g mol-1, glass transition temperature of 64°C, high cross-link density, and thermal stability with a decomposition temperature of 165°C. Functionalized poly[N-methyl B-methyl amino borazine] with chemical stability was fully characterized by 1H, 13C, 11B nuclear magnetic resonance, FTIR, DSC, and SEC analyses. Ultraviolet absorption spectra evidenced changes in the structure of the aforementioned oligomers.
©2011 by Walter de Gruyter Berlin Boston
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Artikel in diesem Heft
- Original Articles
- Selecting process parameter in injection molding via simulation optimization
- A multicriteria simulation optimization method for injection molding
- Approach to develop a screw configuration for compounding solid fillers on a twin screw extruder using the example of polyethylene-layered silicate masterbatches
- WIT: how to visualise, analyse, and control hollow space formationa
- Effect of the glass fiber length on the mechanical properties of long glass fiber reinforced polyphenylene sulfide
- Thermodynamic study of poly(ethylene glycol) in water/acetone solutions by viscometry
- Polymerization of N-methyl B-methyl amino borazine
- Graft copolymerization of granular starch maleate with acrylamide for enhancing grafting efficiency
- Nylon 6,12 fibers under low-dose gamma irradiation
