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Thermoplastic Hybrid Materials: Polyhedral Oligomeric Silsesquioxane (Poss) Reagents, Linear Polymers, and Blends

Published online by Cambridge University Press:  10 February 2011

Joseph D. Lichtenhan ,
Charles J. Noel ,
Alan G. Bolf  and
Patrick N. Ruthi
Joseph D. Lichtenhan
Affiliation:
Phillips Laboratory, Propulsion Directorate, Edwards AFB, CA 93524
Charles J. Noel
Affiliation:
Ohio State University, Department of Consumer and Textile Sciences, Columbus, OH 43210
Alan G. Bolf
Affiliation:
Hughes STX, Phillips Laboratory, Edwards AFB, CA 93524
Patrick N. Ruthi
Affiliation:
Hughes STX, Phillips Laboratory, Edwards AFB, CA 93524
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Abstract

Polyhedral Oligomeric SilSesquioxanes (POSS) are structurally well defined cage-like molecules represented by the generic formula (RSiOl.5)n. POSS compounds possess a unique hybrid composition with an oxygen to silicon ratio of 1.5, intermediate between that for silica and silicone. An entire monomer catalogue (chemical tree) of hybrid POSS-based reagents suitable for polymerization and grafting reactions has been developed from R7Si7O9(OH)3 and related precursors. POSS reagents containing no more than one or two reactive groups enable the preparation of hybrid materials with desirable physical properties such as thermoplasticity, and elasticity. An overview of the synthesis of POSS monomers and thermoplastic POSS-acrylic polymers is given. The thermal and physical properties for POSS-acrylic monomers, homopolymers, copolymers, and blends with poly(methylmethacrylate) are described.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 435: Symposium V – Better Ceramics Through Chemistry VII , 1996 , 3
Copyright
Copyright © Materials Research Society 1996

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References

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