PR4

Project Research on Development of Scattering Spctrometers Utilizing Smalland Medium Class Neutron Source
ARS-4: Not performed by no operation of KUR.
ARS-5: Hara et.al. continued to analyze nanostructural change of a surfactant (Sodium Oleate, NaOl) with KUR-SANS. (The data was obtained in 2013). They analyzed the surfacta system with pair distance distribution function andrevealed spherical scatterers in the solution.
ARS-6: Not performed by no operation of KUR.
ARS-7: Not performed by no operation of KUR.
ARS-8: Not performed by no operation of KUR.

Masaaki Sugiyama
Research Reactor Institute, Kyoto University
Objectives and Allotted Research Subjects: It is nodoubt that Small-angle neutron scattering is one of themost powerful tools to investigate nanoscale structures invariety of materials. However, the less opportunity to do
SANS is a bottleneck that SANS becomes general method
to observe nanoscale structure. Utilizing small and medium size reactor as a neutron source for SANS spectrometer gives one answer for this difficulty. Under this line,
this project proves it through showing the feasibility andupgrade of KUR-SANS.
ARS-1: Challenge for Development of Analyzer for Particle-Size distribution with Small-Angle Scattering. (M.
Sugiyama, R.Inoue, N.Sato and Y. Oba)
ARS-2: Are Size Upgrading of Compact Monochromator for SANS. (M. Hino, Y. Oba, M.Sugiyama, T. Oda andS.Tasaki)
ARS-3: Structural Analysis of PVA gel by adding Inorganic Salt (R.Inoue, Y. Oba, N. Sato, T.Kanaya and M.
Sugiyama)
ARS-4: Estimation of Fine Structure in Metallic Materials by SANS (Y. Oba, S.Morooka, M. Ohnuma, N. Sato,M. Sugiyama)
ARS-5: KUR-SANS Observations and Analysis Surfactants’ Nano-structural Change by Capturing Heavy Metal.
(K. Hara, T. Miyazaki, Y. Oba, N. Sato, M. Sugiyama, Y.
Hidaka and H. Okabe,)
ARS-6: Small-Angle Neutron Scattering Analysis of theNanostructure of Wheat Proteins. (R. Urade, Y. Higashino,S.Funaki, Y.Kitao, N. Sato and M. Sugiyama)
ARS-7: Structural Investigation on Radiation-Fabricated Functional Gel. (N. Sato, Y. Oba and M.
Sugiyama)
ARS-7: Quantitative Analysis for TiN particle byEffect of Thermal Weld in Steel (S. Morooka, Y. Oba,and M. Sugiyama)
ARS-8: Nano structure of metal hydride by neutron small
angle scattering. (K. Iwase, K. Mori, Y.Oba and M.
Sugiyama)
Main Results and Contents of This Project:

ARS-1: Not performed by no operation of KUR.
ARS-2: Not performed by no operation of KUR.
ARS-3: Not performed by no operation of KUR.

採択課題番号 26P4
中小型中性子源を用いた散乱分光システムの開発（京大・原子炉）杉山正明

17プロジェクト

PR4-1

KUR-SANS Observations and Analyses ofSurfactants’ Nano-structural Change by Capturing Heavy Metal

K. Hara, T. Miyazaki, Y. Oba1, N. Sato1, M. Sugiyama1,
Y. Hidaka, H. Okabe
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
1
Division of Quantum Beam Material Science, Research Reactor Institute, Kyoto University
INTRODUCTION:Ion flotation is well-known as a simple and useful
method to remove hazardous ions or to recover valuable ions [1,2]. Besides, because the surfactants are
known to exhibit various nano-scale structural changes in the flotation process as scavengers or collectors,
such a nano-structural change will be useful for examining the performance of KUR-SANS system installed at Research Reactor Institute, Kyoto University.
Therefore, in the present study, the nano-structuralchanges of a surfactant (Sodium Oleate, NaOl) in thefloatation process have been investigated.

Fig.1

SANS profiles of Sodium Oleatein D2O containing CuCl2 before flotation.

EXPERIMENTS:
CuCl2 (5 mM) was added to respective NaOl (30mM)-D2O solutions after adjusting their pHʼs at 7, 8, 10and 12 with HCl and NaOH. Then the solutions were
bubbled for 10 min and were poured into quartz cells
for the SANS measurements. The SANS profiles weremeasured at room temperature with the KUR-SANSsystem (CN-2) with a 2.8 Å neutron beam.
RESULTS:Figures 1 and 2 show SANS profiles of the CuCl2added Sodium Oleate in D2O at several pHʼsbefore andafter the flotation, respectively. Except for the pH=12
specimen, the lower-q region intensity decreased greatly indicating the larger substances are effectively recovered by flotation. In the present study, the SANS
profiles have been further analyzed with pair distance
distribution functions (PDDF) for deriving semi-quantitative scatterer-shape information [3]. As an example,
the PDDF of Cu-added pH=10 specimen is shown in
Fig. 3, of which the well-defined symmetric bell-shapeindicates the existence of spherical scatterers in the solution. Such features demonstrates a high quality of theSANS profiles measured by the KUR-SANS system.

Fig.2

REFERENCE:[1] F. Sebba, Ion flotation (Elsevier, Amsterdam, 1962)[2] E. J. Mahne and T. A. Pinfold, J. Appl. Chem., 18(1968) 52-54[3] O. Glatter, J. Appl. Cryst., 10 (1977) 415-421

Fig.3

採択課題番号
ハイドロコロイドのガンマ線照射効果と(九大院工) 原 一広、宮崎智博
京大原子炉）佐藤信浩、大場洋次郎、杉山正明

18SANS profiles of Sodium Oleatein D2O containing CuCl2 after flotation.

Pair distance distribution function ofSodium Oleate in D2O containing CuCl2.

を用いたナノ構造観測 プロジェクト