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Synthesis and characterization of poly(aminoborane) as a new boron nitride precursor
Author(s) -
Kim DongPyo,
Moon KyoTae,
Kho JoongGon,
Economy James,
Gervais Christel,
Babonneau Florence
Publication year - 1999
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/(sici)1099-1581(199912)10:12<702::aid-pat931>3.0.co;2-q
Subject(s) - borazine , materials science , differential scanning calorimetry , boron trifluoride , polymer chemistry , polymer , pyrolysis , nitride , boron , chemical engineering , boron nitride , organic chemistry , chemistry , nanotechnology , catalysis , layer (electronics) , physics , engineering , composite material , thermodynamics
During the solution reaction of NaBH 4 /(NH 4 ) 2 SO 4 in tetraglyme to form borazine, polymeric aminoborane (NH 2 BH 2 ) x has been isolated as a white powder. The powder was characterized by thermal gravimetric analysis/differential scanning calorimetry, infrared and mass spectroscopies, and powder X‐ray diffraction. Solid‐state 15 N and 11 B nuclear magnetic resonance firmly proved that the chain‐like poly(aminoborane) evolved a partially condensed B 3 N 3 ring structure by dehydrogenative condensation between chains at 200 °C. Pyrolysis of the polymer in a nitrogen stream up to 1400 °C led to a 75% yield of hexagonal boron nitride with an interlayer spacing of 3.37 Å. Copyright © 1999 John Wiley & Sons, Ltd.