Stereocontrolled Polymerization within a Cyclophosphazene Clathrate Tunnel System

Harry R. Allcock; Eric N. Silverberg; Gary K. Dudley

doi:10.1021/ma00082a023

Stereocontrolled Polymerization within a Cyclophosphazene Clathrate Tunnel System

Harry R. Allcock, Eric N. Silverberg, Gary K. Dudley

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29 Scopus citations

Abstract

The inclusion and ⁶⁰Co γ-ray-initiated polymerization of vinylic and acrylic monomers within the clathrate tunnels formed by tris(o-phenylenedioxy)cyclotriphosphazene is described. Methacrylonitrile, methacrylic acid, ethyl acrylate, butyl acrylate, hexyl acrylate, allyl methacrylate, vinyl acetate, and vinylanisole monomers were included by direct contact imbibition. Varying degrees of stereoregularity were obtained from the inclusion polymerization of the monomers listed above. For example, poly(methacrylonitrile) synthesized within the host adduct showed an enhanced isotactic microstructure. Another aspect of clathratemediated polymerization is that no radiation cross-linked material was obtained for polymers derived from the acrylates and methacrylonitrile, in contrast to the corresponding radiation-induced bulk polymerizations. The copolymer poly(vinyl acetate-co-methyl acrylate) was also prepared using the inclusion polymerization method.

Original language	English (US)
Pages (from-to)	1033-1038
Number of pages	6
Journal	Macromolecules
Volume	27
Issue number	4
DOIs	https://doi.org/10.1021/ma00082a023
State	Published - Jul 1 1994

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma00082a023

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title = "Stereocontrolled Polymerization within a Cyclophosphazene Clathrate Tunnel System",

abstract = "The inclusion and 60Co γ-ray-initiated polymerization of vinylic and acrylic monomers within the clathrate tunnels formed by tris(o-phenylenedioxy)cyclotriphosphazene is described. Methacrylonitrile, methacrylic acid, ethyl acrylate, butyl acrylate, hexyl acrylate, allyl methacrylate, vinyl acetate, and vinylanisole monomers were included by direct contact imbibition. Varying degrees of stereoregularity were obtained from the inclusion polymerization of the monomers listed above. For example, poly(methacrylonitrile) synthesized within the host adduct showed an enhanced isotactic microstructure. Another aspect of clathratemediated polymerization is that no radiation cross-linked material was obtained for polymers derived from the acrylates and methacrylonitrile, in contrast to the corresponding radiation-induced bulk polymerizations. The copolymer poly(vinyl acetate-co-methyl acrylate) was also prepared using the inclusion polymerization method.",

author = "Allcock, {Harry R.} and Silverberg, {Eric N.} and Dudley, {Gary K.}",

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T1 - Stereocontrolled Polymerization within a Cyclophosphazene Clathrate Tunnel System

AU - Allcock, Harry R.

AU - Silverberg, Eric N.

AU - Dudley, Gary K.

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Y1 - 1994/7/1

N2 - The inclusion and 60Co γ-ray-initiated polymerization of vinylic and acrylic monomers within the clathrate tunnels formed by tris(o-phenylenedioxy)cyclotriphosphazene is described. Methacrylonitrile, methacrylic acid, ethyl acrylate, butyl acrylate, hexyl acrylate, allyl methacrylate, vinyl acetate, and vinylanisole monomers were included by direct contact imbibition. Varying degrees of stereoregularity were obtained from the inclusion polymerization of the monomers listed above. For example, poly(methacrylonitrile) synthesized within the host adduct showed an enhanced isotactic microstructure. Another aspect of clathratemediated polymerization is that no radiation cross-linked material was obtained for polymers derived from the acrylates and methacrylonitrile, in contrast to the corresponding radiation-induced bulk polymerizations. The copolymer poly(vinyl acetate-co-methyl acrylate) was also prepared using the inclusion polymerization method.

AB - The inclusion and 60Co γ-ray-initiated polymerization of vinylic and acrylic monomers within the clathrate tunnels formed by tris(o-phenylenedioxy)cyclotriphosphazene is described. Methacrylonitrile, methacrylic acid, ethyl acrylate, butyl acrylate, hexyl acrylate, allyl methacrylate, vinyl acetate, and vinylanisole monomers were included by direct contact imbibition. Varying degrees of stereoregularity were obtained from the inclusion polymerization of the monomers listed above. For example, poly(methacrylonitrile) synthesized within the host adduct showed an enhanced isotactic microstructure. Another aspect of clathratemediated polymerization is that no radiation cross-linked material was obtained for polymers derived from the acrylates and methacrylonitrile, in contrast to the corresponding radiation-induced bulk polymerizations. The copolymer poly(vinyl acetate-co-methyl acrylate) was also prepared using the inclusion polymerization method.

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Stereocontrolled Polymerization within a Cyclophosphazene Clathrate Tunnel System

Abstract

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