Dynamics of propylene glycol and its 7-mer by neutron scattering

J. Swenson; I. Köper; M. T.F. Telling

doi:10.1063/1.1453400

Dynamics of propylene glycol and its 7-mer by neutron scattering

J. Swenson, I. Köper, M. T.F. Telling

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26 Citations (Scopus)

Abstract

The dynamics of propylene glycol (PG) and its 7-mer were investigated using quasielastic neutron scattering (QENS) and neutron spin-echo (NSE). The QENS results showed a weakly temperature dependent fast local motion of hydrogens in the polymeric backbone, an almost temperature independent rotational motion of the methyl groups, and a strongly temperature dependent translational process. It was also observed that the dynamics was slowest and the stetching parameter β_KWW was largest for Q= 1.4 Å^-1.

Original language	English
Pages (from-to)	5073-5079
Number of pages	7
Journal	Journal of Chemical Physics
Volume	116
Issue number	12
DOIs	https://doi.org/10.1063/1.1453400
Publication status	Published - 22 Mar 2002
Externally published	Yes

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N2 - The dynamics of propylene glycol (PG) and its 7-mer were investigated using quasielastic neutron scattering (QENS) and neutron spin-echo (NSE). The QENS results showed a weakly temperature dependent fast local motion of hydrogens in the polymeric backbone, an almost temperature independent rotational motion of the methyl groups, and a strongly temperature dependent translational process. It was also observed that the dynamics was slowest and the stetching parameter βKWW was largest for Q= 1.4 Å-1.

AB - The dynamics of propylene glycol (PG) and its 7-mer were investigated using quasielastic neutron scattering (QENS) and neutron spin-echo (NSE). The QENS results showed a weakly temperature dependent fast local motion of hydrogens in the polymeric backbone, an almost temperature independent rotational motion of the methyl groups, and a strongly temperature dependent translational process. It was also observed that the dynamics was slowest and the stetching parameter βKWW was largest for Q= 1.4 Å-1.

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Dynamics of propylene glycol and its 7-mer by neutron scattering

Abstract

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