| Literature DB >> 30856582 |
A I Karelin1, R R Kayumov2, Yu A Dobrovolsky3.
Abstract
Nafion-NH4+ membranes plasticized with dimethyl sulfoxide (DMSO and DMSO-d6) have been investigated at room temperature using the vacuum ATR-FTIR and FTIR absorption spectroscopic technique in the range 50-4000 cm-1. The amount of the plasticizer corresponds to the molecular ratio n = DMSO/NH4+ = 2.7-13.8. The mutual association of free DMSO molecules in Nafion leads to appearance of weak band at 86 cm-1 assigned to dipole-dipole interactions. Also the Raman spectra of dry Nafion-NH4+ membranes were investigated.Entities:
Keywords: ATR-FTIR; DMSO plasticization; FTIR absorption and Raman spectroscopy; Hydrogen bonds NH(4)(+)…O; Isotope substitution H–D; Membrane Nafion in ammonium form; Molecular dipole-dipole interactions
Year: 2019 PMID： 30856582 DOI： 10.1016/j.saa.2019.03.007
Source DB: PubMed Journal: Spectrochim Acta A Mol Biomol Spectrosc ISSN： 1386-1425 Impact factor: 4.098