Neutron Spin Echo Studies on Correlation between Membrane Undulations and Mesoscopic Structures in Complex Fluids Involving Amphiphiles

涉及两亲物的复杂流体中膜波动与介观结构相关性的中子自旋回波研究

• 批准号: 13440119
• 负责人: TAKEDA Takayoshi
• 金额: $ 9.54万
• 依托单位: Hiroshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13440119/
• 关键词: neutron spin echo; dynamics; complex fluids; membrane; amphiphiles; lipid; dynamic structure factor; surfactant; マイクロエマルション

We have improved our neutron spin echo (NSE) spectrometer (ISSP-NSE) using this grant. The polarizing mirrors for the polarizer and the analyzer were replaced with FeCo/Si supermirrors obtained by collaboration with HMI Berlin. A total polarization of the new set of the polarizer and the analyzer was over 90%. After examination of polarizing supermirrors such as FeCo/TiNx remanent one obtained from SwissNeutronics using this grant, a 6 m bender guide polarizer and a wide cross section multi-channel bender guide analyzer which consisted of remanent polarizing supermirrors provided from SwissNeutronics were purchased by ISSP and wide cross section spiral correction coils were developed using this grant in order to upgrade ISSP-NSE. We have developed the new-type spin flippers, which operate with steady current for a white neutron beam, for a time-of-flight NSE spectrometer at a pulsed spallation neutron source (JSNS) in J-PARC. NSE and small angle scattering experiments have been performed in order to study dynamics such as membrane undulation, mesoscopic structures and the temperature- and the pressure-induced structural phase transition in complex fluids involving amphiphiles such as dipalmitoylphosphatidylcholine(DPPC)/water/CaCl_2 systems, the non-ionic surfactant C_<12>E_5/ oil/water systems and ionic surfactant AOT/oil/water systems.

我们利用这笔资金改进了中子自旋回波（NSE）光谱仪（ISSP-NSE）。起偏器和检偏器的偏光镜被替换为与 HMI Berlin 合作获得的 FeCo/Si 超级镜。新的一套起偏器和检偏器的总偏振度超过90%。利用该资助对SwissNeutronics提供的FeCo/TiNx剩余偏振超级镜进行检验后，ISSP购买了由SwissNeutronics提供的剩余偏振超级镜组成的6 m弯曲波导偏振镜和宽截面多通道弯曲波导分析仪，并利用该资助开发了宽截面螺旋校正线圈，以升级ISSP-NSE。我们为 J-PARC 脉冲散裂中子源 (JSNS) 的飞行时间 NSE 能谱仪开发了新型自旋翻转器，它可以稳定电流运行白色中子束。进行了NSE和小角散射实验，以研究涉及两亲物的复杂流体中的动力学，例如膜波动、介观结构以及温度和压力诱导的结构相变，例如二棕榈酰磷脂酰胆碱(DPPC)/水/CaCl_2体系、非离子表面活性剂C_<12>E_5/油/水体系和 离子表面活性剂AOT/油/水体系。

项目成果

Temeperature-and Pressure-dependences of Shape Fluctuations in a Ternary Microemulsion System

三元微乳液体系中形状波动的温度和压力依赖性

• 发表时间: 2002
• 期刊: Journal of Neutron Research 10
• 作者: T.Kanaya;Norifumi L. Yamada;T.Kanaya;Norifumi L.Yamada;Y.Kawabata;H.Seto;M.Nagao;T.Takeda;H.Seto;M.Nagao;H.Seto;T.Takeda;Y.Kawabata
• 通讯作者: Y.Kawabata

Dynamical fluctuation of the mesoscopic structure in ternary C_<12>E_5/water/n-octane amphiphilic system

C_<12>E_5/水/正辛烷三元两亲体系介观结构的动态涨落

• 发表时间: 2001
• 期刊: Physical Review E 63
• 作者: T.Kanaya;Norifumi L. Yamada;T.Kanaya;Norifumi L.Yamada;Y.Kawabata;H.Seto;M.Nagao;T.Takeda;H.Seto;M.Nagao;H.Seto;T.Takeda;Y.Kawabata;T.Kanaya;Y.Kawabata;T.Takeda;K.Yoshida;M.Hirai;Y.Kawabata;T.Kanaya;Y.Kawabata;T.Takeda;K.Yoshida;M.Hirai;T.Takeda;Y.Kawabata;S.Komura
• 通讯作者: S.Komura

Carbon Number Study on Self-Assmble Mechanisms in AOT/D_2O/n-alkane Microemulsion Systems

AOT/D_2O/正烷烃微乳液体系中碳原子数的研究

• 发表时间: 2001
• 期刊: Journal of Physical Society of Japan 70
• 作者: T.Kanaya;Norifumi L. Yamada;T.Kanaya;Norifumi L.Yamada;Y.Kawabata;H.Seto;M.Nagao;T.Takeda;H.Seto;M.Nagao;H.Seto;T.Takeda;Y.Kawabata;T.Kanaya;Y.Kawabata;T.Takeda;K.Yoshida;M.Hirai;Y.Kawabata;T.Kanaya;Y.Kawabata;T.Takeda;K.Yoshida;M.Hirai;T.Takeda;Y.Kawabata;S.Komura;M.Nagao
• 通讯作者: M.Nagao

Neutron Spin Echo Investigations on Dynamics in Ternary C_<12>E_5 / n-octane / D_2O and DPPC / D_2O / CaCl_2 Amphiphilic Systems

三元C_<12>E_5/正辛烷/D_2O和DPPC/D_2O/CaCl_2两亲体系动力学的中子自旋回波研究

• 发表时间: 2001
• 期刊: Studies in Surface Science and Calalysis 132
• 作者: T.Kanaya;Norifumi L. Yamada;T.Kanaya;Norifumi L.Yamada;Y.Kawabata;H.Seto;M.Nagao;T.Takeda;H.Seto;M.Nagao;H.Seto;T.Takeda;Y.Kawabata;T.Kanaya;Y.Kawabata;T.Takeda;K.Yoshida;M.Hirai;Y.Kawabata;T.Kanaya;Y.Kawabata;T.Takeda;K.Yoshida;M.Hirai;T.Takeda;Y.Kawabata;S.Komura;M.Nagao;Y.Kawabata;T.Takeda;S.Komura;H.Seto;M.Nagao;H.Seto;T.Takeda
• 通讯作者: T.Takeda

H.Seto: "A swollen gel phase of DPPC aqueous solution with small amount of ethanol observed atmoderate pressure and temperature"Journal of Applied Crystallography. 36. 607-611 (2003)

H.Seto：“在中等压力和温度下观察到的含少量乙醇的 DPPC 水溶液的溶胀凝胶相”《应用晶体学杂志》。