Bicontinuous Structure and Dynamics in Complex Fluids of Ternary Amphiphilic Systems

三元两亲体系复杂流体的双连续结构和动力学

基本信息

批准号：
09640466
负责人：
TAKEDA Takayoshi
金额：
$ 1.98万
依托单位：
HIROSHIMA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09640466/
关键词：
neutron spin echo slow dynamics complex fluids dynamic structure factor membrane microemulsion amphiphiles surfactant 界面活性剤両親媒性分子検雑液体

项目摘要

We have been improving a neutron spin echo (NSE) spectrometer at C_<2-2> port of JRR-3M, JAERI.A high-pressure cell for NSE studies in comlex fluids was installed using this grant.NSE and small angle scattering experiments have been performed to study the slow dynamics such as membrane undulation in complex fluids involving amphiphiles. Intermediate correlation functions I(Q,t) obtained from our NSE experiments were well fitted to the equation I(Q,t)=I(Q,0)exp[(-Gt)^<2/3>] for the dipalmitoylphosphatidylcholine (DPPC)-water-CaCl_2 system and for the low temperature and high temperature bicontinuous microemulsion phases and the lamella phase of the non-ionic surfactant C_<12>E_5/n-octane / water system, and also for the dense droplet phase of, the temperature-induced and the pressure-induced lamella phases of the ionic surfactant AOT / n-decane / water system. The relaxation rate G increased as Q^3. From these results, the theory of Zilman and Granek, in which they use the Helfrich bending free energy to describe membrane undulations in sponge and lamellar phases, was first supported by our NSE experiments. We estimated the bending modulus of the membranes using their theory. For aqueous solutions of non-ionic surfactant C_<16>E_7 with wormlike micelles, the results that I(Q,t)=I(Q,0)exp[(-Gt)^<3/4>] and G increased as Q^<8/3> are also explained by their theory for 1-dimensional polymer-like model.

使用此Grant.NSE和小角度散射实验，已经在C_RR-3M的C_ <2-2> JRR-3M，JAERI。用于NSE研究的高压细胞的中性旋转回声（NSE）光谱仪进行了改进。进行了NSE研究的高压细胞。进行了小角度散射实验，以研究较慢的动力学，例如在复杂液体中涉及复杂液体中的缓慢动态。从我们的NSE实验获得的中间相关函数I（Q，t）很好地适合于等式i（q，t）= i（q，0）exp [（ - gt）^<2/3>]，用于二倍氨甲米氨酰氯二酰磷脂酰胆碱（DPPC）-Water-cacl_2系统，以及低温和高温和高温和高温的MICERMIN，非离子表面活性剂C_ <12> E_5 / n-辛烷 /供水系统，以及对于离子表面活性剂AOT / N-DECANE /水系统的温度诱导和压力诱导的薄片阶段的致密液滴相。放松率G作为q^3增加。从这些结果来看，Zilman和Granek的理论首先使用NSE实验支持了Helfrich弯曲自由能来描述海绵和层状阶段中的膜起伏。我们使用其理论估算了膜的弯曲模量。对于带有虫状胶束的非离子表面活性剂C_ <16> E_7的水溶液，结果I（q，t）= I（q，0）EXP [（ - GT）^<3/4>]和G作为Q^<8/3>增加，也通过其1二维聚合物模型的理论来解释。