2024
DOI: 10.1021/acs.macromol.3c02360
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Spin Relaxation and Dynamics of Ring Poly(ethylene oxide) in Melts

Kevin Lindt,
Nail Fatkullin,
Carlos Mattea
et al.

Abstract: The spin relaxation of protons and deuterons was investigated in melts of ring poly(ethylene oxide) (PEO) macromolecules with a molecular mass varying from 5280 to 96,000 Da. Comparison of the frequency dispersion of NMR spin− lattice relaxation rates with corresponding rates in the melts of linear PEO of similar molecular masses shows that there is a significant mutual interpenetration of neighboring ring macromolecules, although less pronounced than in their linear counterparts. The mean-squared displacement… Show more

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