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Crosslinking with S2C12 of EPDM rubbers and of EPDM grafted with polyacrylic acid

✍ Scribed by Y. Averko; M. Pegoraro; A. Penati

Publisher: Elsevier Science
Year: 1974
Tongue: English
Weight: 461 KB
Volume: 10
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(74)90181-5

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✦ Synopsis

EPDM rubber swollen in n-butylacetate was crosslinked with SzCI 2 solution in n-butylacetate. From swelling measurements in benzene and the Fiory-Rehner equation, the density of elastically-active network chains was calculated as a function of time, Kinetics have been discussed; the diffusion process of $2C12 in the swollen polymer plays a very important role. Crosslinking of EPDM grafted with polyacrylic acid has been carried out on thin films using $2C12 as reagent and n-butylacetate as swelling agent, showing similar kinetic behaviour. Intermolecular bonds are due both to sulphur bridges in EPDM and to sulphur and to hydrogen bonds in EPDM grafted samples.

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