Download Formation and Dynamics of Self-organized Structures in by Kyoji Kawasaki, Bjoern Lindmann, Hirofumi Okabayashi PDF

By Kyoji Kawasaki, Bjoern Lindmann, Hirofumi Okabayashi

The foreign Symposium on Colloid and Polymer technological know-how was once held at Nagoya Institute of expertise, Nagoya, Japan, in October 1996. this system coated either the elemental points in addition to technological functions of micelles, microemulsions, monolayers, and biocolloids. exact emphasis used to be put on formation and dynamics of self-organized buildings, together with technical advancements, purposes, common concept, and result of investigations.

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Extra info for Formation and Dynamics of Self-organized Structures in Surfactants and Polymer Solutions: Recent Advances (Progress in Colloid and Polymer Science, Volume 106)

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Considering the relations d "~ 2rc/a and Progr Colloid Polym Sci (1997) 106:i4-23 9 Steinkopff Verlag 1997 ' ' ' . . J . . r , . 24 / l-/f------m....... m....... n ......... ,' 80 Jl' 0 .......... 2 Fig. 5 Fitted parameters a, b, and c. 20 ~ I/b,the i n t e r - d o m a i n size d a n d t h e c o h e r e n c e l e n g t h decreases. T h i s m a k e s sense b e c a u s e we c r e a t e m o r e surfaces p e r unit v o l u m e s as t h e n u m b e r of s u r f a c t a n t m o l e c u l e s i n c r e a s e a n d t h e r e f o r e the i n t e r - d o m a i n size s h o u l d decrease.

4 with three representative data fitting. The fitted parameters a, b, and c are given in Table 2 and their trends are shown in Fig. 5. The increase of c corresponds to the decrease in interracial length scale 1/c which measures the persistence length of the interface. This is reasonable as salinity increases the surfactant film tends to curve toward water and the persistence length of the surfactant film decreases. Fig. 49 wt%. The size of the box is 960 x 960 x 960 A 3 As shown in Fig. 6B, the average Gaussian curvature decreases with salinity while the square mean curvature increases, both linearly.

The method monitors transport over macroscopic distances (typicaily in the micrometer regime). Therefore, when the method is applied to the field of surface and colloid chemistry, the diffusion coefficients determined reflect the aggregate sizes and obstruction effects of the colloidal particles. This is the origin of the success the method has had in the study of microstructures of surfacrant solutions and also forms the basis of its applications to emulsion systems. The fact that the information is obtained without invoking complicated models, as is the case for the N M R relaxation approach, is particularly important.

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