Published online by Cambridge University Press: 15 February 2011
Polymers based upon inorganic elements are becoming more important in the field of high performance materials because of their outstanding mechanical, thermal, and chemical stabilities. Polyphosphazenes, which are based upon a nitrogen-phosphorus backbone, show promise as new engineering materials. The large number of different chemical structures possible allows the synthesis of phosphazene polymers for specific applications. Initial tests on one phosphazene-based set of materials show that they are very hard, stiff, and have excellent resistance to organic chemicals.