Accession Number:

ADA281010

Title:

Polymeric Precursors to Binary Inorganic Materials

Descriptive Note:

Final rept.

Corporate Author:

VERMONT UNIV BURLINGTON DEPT OF CHEMISTRY

Personal Author(s):

• Allen, Christopher W.

Report Date:

1994-06-29

Pagination or Media Count:

7.0

Abstract:

The research supported in this contract, and previous a ORN contract Organofunctional Phosphazenes and Organofunctional Phosphazene Polymers has led to the establishment of an entire new class of hybrid inorganicorganic materials. After the discovery and elaboration of this class of polymers by our group in Vermont, research in this area has attracted the interest of inorganic Chemists, polymer chemists and material scientists in the US, Canada, the UK, the Netherlands, and Japan. Our work has been comprehensively reviewed in Technical Report TR 19. The entire area is covered in yearly comprehensive reviews of phosphazene chemistry authored by the P.I. The work supported by this contract was concerned with the preparation and polymerization of functionalized inorganic ring systems followed by thermal decomposition reactions to provide interesting and useful materials such as boron nitride ceramics. The general approach involved a three step process which started with the affixing of a vinyl group to an inorganic ring system with the emphasis being on cyclophosphazenes and cycloborazines.

Descriptors:

• *POLYMERS
• *PRECURSORS
• *INORGANIC MATERIALS
• *COMPOSITE MATERIALS
• *PHOSPHAZENE
• *BINARY COMPOUNDS
• THERMAL PROPERTIES
• CERAMIC MATERIALS
• CHEMICAL REACTIONS
• VINYL RADICALS
• BORON NITRIDES
• ORGANIC MATERIALS
• HYBRID SYSTEMS
• RINGS
• DECOMPOSITION
• CYCLIC COMPOUNDS
• PYROLYSIS

Subject Categories:

• Inorganic Chemistry
• Polymer Chemistry
• Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE