Naslov
Influence of the network on the interaction parameter in system EPDM vulcanizate-solvent

Autori
Hrnjak-Murgić, Zlata ; Jelenčić, Jasenka ; Bravar, Mladen ; Marović, Marijana

Izvornik
Journal of applied polymer science (0021-8995) 65 (1997), 5; 991-999

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
EPDM; interaction parameter; network; solvents; swelling

Sažetak
Swelling measurements in six organic solvents were carried out on samples of dicumyl peroxide crosslinked ethylene-propylene-diene (EPDM) having various crosslink densities. The Flory-Huggins interaction parameter x was determined for EPDM vulcanizates 312 and 812 as well as their mixture 312/812 using the Flory-Rehner equation. The results show that the x parameter for the crosslinked polymer is greater than for the uncrosslinked one and is a linear function of the crosslink density. The swelling behavior of the networks were also interpreted by the Flory-Erman theory using the structural factor F"4 to characterize the network and its behavior during the swelling. The obtained x values indicate that broadening of the molecular mass distribution, in the Gaussian region of distribution, mixture 312/812, increases interactions with solvents.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA