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Contrast dependence of scattering profiles for poly(ethylene glycol) in water: Investigation by small-angle neutron scattering with 3He spin filter and small-angle x-ray scattering.
- Source :
- Journal of Chemical Physics; 3/21/2024, Vol. 160 Issue 11, p1-9, 9p
- Publication Year :
- 2024
-
Abstract
- The small-angle neutron scattering (SANS) and small-angle x-ray scattering (SAXS) measurements were performed for deuterated and non-deuterated poly(ethylene glycol) (d-PEG and h-PEG, respectively) in D<subscript>2</subscript>O and a D<subscript>2</subscript>O/H<subscript>2</subscript>O mixed solvent (Mix) to compare the scattering profiles. To determine the coherent scattering intensity of SANS, a <superscript>3</superscript>He spin filter was utilized. The scattering profiles determined by the SANS measurements were analyzed in terms of the wormlike chain model with touched beads along the contour of the chain. However, the SAXS profiles were not explained by the same model with uniform beads but with beads each consisting of a core and a shell having different electron densities. To explore the chain thickness determined from the SANS profile, the scattering intensities for different combinations of d-PEG/D<subscript>2</subscript>O, d-PEG/Mix, h-PEG/D<subscript>2</subscript>O, and h-PEG/Mix were also examined. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 160
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 176229945
- Full Text :
- https://doi.org/10.1063/5.0192680