Hydridopolysilazanes, borazine modified

Kai, S., Edward, E. R., Gregg, A. Z., Larry, G. S. (1993). Synthesis, characterization and ceramic conversion reactions of borazine-modified hydridopolysilazanes New polymeric precursors to silicon nitride carbide boride (SiNCB) ceramic composites. Chemistry of Materials, 5(4), 547-556. doi 10.1021/cm00028a024. 

Borazine-Modified Hydridopolysilazanes. Polysilazanes have been shown to be excellent polymeric precursors to silicon nitride or SiNC ceramic materials. Chemical modification of polysilazanes has also been proposed as a means of modifying and enhancing e properties of the polymer and/or the final ceramic materials. For example, the incorporation of boron in the polysilazane has been claimed to decrease the crystallinity of the silicon nitride deriv from these polymers and thereby extend the effective use-temperature of these ceramics. Given the potential importance of SiNCB ceramics, investigations of the generation of new classes of hybrid polymers that might serve as processable precursors to such composites were initiate. 

Because of their ease of synthesis and processability, as well as the increased thermal stabilities and reduced crystallinity of their derived ceramics, these new hybrid borazine-modified hydridopolysilazanes polymers may prove to be reasonable... 

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