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

被引：2

作者：

Ryoki, Akiyuki ^{[1
]}

Watanabe, Fumi ^{[1
]}

Okudaira, Takuya ^{[2
]}

Takahashi, Shingo ^{[3
]}

Oku, Takayuki ^{[3
]}

Hiroi, Kosuke ^{[4
]}

Motokawa, Ryuhei ^{[5
]}

Nakamura, Yo ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Engn, Dept Polymer Chem, Kyoto, Japan

[2] Nagoya Univ, Grad Sch Sci, Dept Phys, Nagoya, Japan

[3] Ibaraki Univ, Grad Sch Sci & Engn, Dept Phys, Mito, Japan

[4] JAEA, J PARC Ctr, Tokai, Japan

[5] JAEA, Mat Sci Res Ctr, Tokai, Japan

来源：

JOURNAL OF CHEMICAL PHYSICS | 2024年 / 160卷 / 11期

关键词：

MOLECULAR-WEIGHT DETERMINATION; AQUEOUS-SOLUTIONS; LIGHT-SCATTERING; WORMLIKE CHAINS; OLIGO(METHYL METHACRYLATE); POLY(METHYL METHACRYLATE); STATISTICAL-MECHANICS; POLYMER; SANS; OXIDE);

D O I：

10.1063/5.0192680

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 D2O and a D2O/H2O mixed solvent (Mix) to compare the scattering profiles. To determine the coherent scattering intensity of SANS, a He-3 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/D2O, d-PEG/Mix, h-PEG/D2O, and h-PEG/Mix were also examined.

引用

页数：9

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