Preparation and Characterization of Boron Nitride Coatings on Carbon Fibers From Functionalized Polyaminoboranes

ABSTRACT Polyaminoboranes, as inorganic analog of polyolefins, can be used to synthesize organic–inorganic hybrid ceramics, known as ceramers, and are typical examples of inorganic polymers. Here, p block elements, such as boron (B), silicon (Si), and phosphorus (P) possessing polyaminoborane homopolymers, were synthesized and characterized. After the synthesis of phosphorus–borane and amino silicon–borane complexes, polyaminoborane derivatives were obtained dehydrocoupling reaction in the presence of Grubbs catalyst. Boron nitride–phosphorus (P–BN) and boron nitride–silicon (Si–BN)‐based ceramics were obtained under pyrolysis condition using polyaminoborane precursors. To demonstrate surface coating application, carbon fiber surface was dip‐coated with polyaminoborane derivatives and pyrolyzed to get the functional boron nitride coating on the carbon fiber surface.