Chain mobility in crosslinked EPDM rubbers : comparison of 1H NMR T2 relaxometry and double-quantum 1H NMR in NMR spectroscopy of polymers

P.C.M.M. Magusin, R.A. Orza, V.M. Litvinov, M. Duin, van, K. Saalwächter

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureHoofdstukAcademic

6 Citaten (Scopus)

Samenvatting

1H NMR transverse relaxation and double-quantum (DQ) build up have been compared for a series of EPDM grades crosslinked with different amounts of sulfur or peroxide. The modulus at 100% elongation of the same EPDM samples correlates linearly to the effective transverse-relaxation and DQ build-up rate, suggesting that both rates are proportional to the total network density caused by chain entanglements and crosslinks. For none of the rates, however, the linear trends of sulfur- and peroxide-crosslinked EPDM coincide. This suggests that sulfur- and peroxide-crosslinked EPDM networks are qualitatively different, which is confirmed by different distributions of residual dipolar coupling constants.
Originele taal-2Engels
TitelNMR spectroscopy of polymers : innovative strategies for complex macromolecules
RedacteurenH.N. Cheng, G. Asakura, A.D. English
Plaats van productieACS Symposium
UitgeverijAmerican Chemical Society
Pagina's207-220
Aantal pagina's541
ISBN van geprinte versie978-0-8412-2667-8
DOI's
StatusGepubliceerd - 2011

Publicatie series

NaamACS Symposium Series
Volume1077
ISSN van geprinte versie0097-6156

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Magusin, P. C. M. M., Orza, R. A., Litvinov, V. M., Duin, van, M., & Saalwächter, K. (2011). Chain mobility in crosslinked EPDM rubbers : comparison of 1H NMR T2 relaxometry and double-quantum 1H NMR in NMR spectroscopy of polymers. In H. N. Cheng, G. Asakura, & A. D. English (editors), NMR spectroscopy of polymers : innovative strategies for complex macromolecules (blz. 207-220). (ACS Symposium Series; Vol. 1077). ACS Symposium: American Chemical Society. https://doi.org/10.1021/bk-2011-1077.ch013