Derivatization of preformed polymers to produce ceramic precursors

Journal Article · Sat Sep 01 04:00:00 EDT 1990 · Journal of the American Ceramic Society; (USA)

DOI:https://doi.org/10.1111/j.1151-2916.1990.tb06751.x· OSTI ID:6072480

Maya, L ^[1]

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1. Chemistry Div., Oak Ridge National Lab., Oak Ridge, TN (US)

This paper reports the feasibility of producing derivatized preformed polymers to be used as ceramic precursors explored. A borane derivative of polyethyleneimine (PEI) was prepared through a transamination reaction involving Me{sub 3}NBH{sub 3}. Higher boron loadings were possible with Me{sub 3}NB{sub 3}H{sub 7}. The borane derivative could be cast into films and produced boron nitride upon pyrolysis. Similarly, polyethyleneimine hydrochloride was converted into the cyanohydroborate derivative through a reaction with NaBH{sub 3}CN. This derivative was also accessible through a transamination reaction. Both materials produced boron nitride upon pyrolysis. Polyallylamine hydrochloride could not be derivatized. Silyl derivatives of PEI were also prepared, but the products obtained afforded low ceramic yields upon pyrolysis.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6072480
• Journal Information: Journal of the American Ceramic Society; (USA), Journal Name: Journal of the American Ceramic Society; (USA) Vol. 73:9; ISSN 0002-7820; ISSN JACTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360602 -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
AMINES
BORANES
BORON COMPOUNDS
CASTING
CERAMICS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DECOMPOSITION
FABRICATION
KINETICS
ORGANIC COMPOUNDS
POLYMERS
PRECURSOR
PYROLYSIS
REACTION KINETICS
THERMOCHEMICAL PROCESSES