Radiation-induced crosslinking and grafting of two polyphosphazene elastomers

Autor:	R. T. Chern, V. T. Stannett, G. L. Grune, J. Harada
Rok vydání:	1993
Předmět:	chemistry.chemical_classification Allylic rearrangement Materials science Polymers and Plastics Polymer Grafting Elastomer chemistry.chemical_compound chemistry Polymer chemistry Side chain Polyphosphazene Irradiation Acrylic acid
Zdroj:	Polymers for Advanced Technologies. 4:341-347
ISSN:	1099-1581 1042-7147
DOI:	10.1002/pat.1993.220040504
Popis:	The radiation-induced crosslinking and grafting of two aryloxy-substituted elastomeric polyphosphazenes have been carried out by both gamma and electron beam irradiation. The classic Charlesby–Pinner [1] plus a simpler approach were used to determine the G(X) values for the crosslinked elastomeric polymers. The apparent G(X) value for the same polymer depended on whether the gamma-ray or the E-beam results were used. The presence of 8.5% repeat units with allylic groups in the side chain increased the G(X) value by an order of magnitude when the irradiation was performed under vacuum with the gamma source. The extent of acrylic acid grafting was also higher for the polymer containing the allylic group. Nearly all the grafted polyphosphazene films were insoluble in THF, a good solvent for the ungrafted samples.
Databáze:	OpenAIRE
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