In:
Journal of Polymer Engineering, Walter de Gruyter GmbH, Vol. 31, No. 5 ( 2011-09-01)
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)CH 3 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 1 H, 13 C, 11 B nuclear magnetic resonance, FTIR, DSC, and SEC analyses. Ultraviolet absorption spectra evidenced changes in the structure of the aforementioned oligomers.
Type of Medium:
Online Resource
ISSN:
2191-0340
,
0334-6447
DOI:
10.1515/polyeng.2011.084
Language:
Unknown
Publisher:
Walter de Gruyter GmbH
Publication Date:
2011
detail.hit.zdb_id:
2602430-5
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