Affiliation:
1. University of Western Ontario Faculty of Science, 98603, Chemistry, London, Ontario, Canada;
2. The University of Western Ontario, London, Ontario, Canada, ;
Abstract
Phosphorus-containing polymer networks as precursors to polymer derived ceramics were prepared using a combination of three monomers (1,3,5-triallyl-1,3,5-triazine-2,4,6-trione or 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane, tetraethyleneglycol diallyl ether, and isobutyl phosphine ). By varying the stoichiometry of these components, it was observed that key properties such as thermal stability, swellability and ceramic yield after pyrolysis can be modified at will. Optimal stoichiometries to achieve the highest ceramic yields upon pyrolysis, while maintaining swellability were determined. Cobalt was introduced into the networks by reaction of the tertiary phosphine fragments in the material with CpCo(CO)2. After pyrolysis of the metalated at 800 °C, the resulting ceramics were characterized using scanning electron microscopy-energy dispersive X-ray (SEM-EDX) and X-ray photoelectron spectroscopy (XPS).
Publisher
Canadian Science Publishing
Subject
Organic Chemistry,General Chemistry,Catalysis