Peculiarities of diffusion in gels

被引：0
作者：
B. G. Pokusaev
S. P. Karlov
A. V. Vyazmin
D. A. Nekrasov
机构：
[1] Moscow State University of Mechanical Engineering,
来源：
Thermophysics and Aeromechanics | 2013年 / 20卷
关键词：
gels; optical methods; diffusion; nanoparticles; aging; anisotropy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An optical method was applied to study the peculiarities of diffusion in gel: this method provides real-time visualization of spreading of solutes brought into the gel. It was shown that spectral characteristics of reflected light give additional information about nature of diffusive spreading of solutes and about state of the gel. Gels with different densities and lifetime were studied. These parameters have strong influence on the velocity of diffusion. The study demonstrated critical differences for diffusion process in gels with true solutions and with solutions with nanoparticles. Experiments discovered the anisotropy in 3D diffusion of solutes in gels; physical explanation of this phenomenon was proposed.
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页码：749 / 756
页数：7
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  • [1] Deryagin BV(1979)The stability of colloidal systems Theoretical aspects, Russian Chemical Reviews 48 363-388
  • [2] Hilfer R(1996)Transport and relaxation phenomena in porous media Advances in Chemical Physics 92 299-334
  • [3] Westrin BA(1991)Diffusion in gels containing immobilized cells: a critical review Biotechnology and Bioengineering 38 439-446
  • [4] Axelsson A(2008)Dynamics of single-file water chains inside nanoscale channels: physics, biological significance and applications J. of Physics D: Applied Physics 41 103002-1-103002-16
  • [5] Fang H(1998)Solute diffusion within hydrogels: mechanisms and models Macromolecules 31 8382-8395
  • [6] Wan R(2006)One and half century of diffusion: Fick, Einstein, before and beyond Diffusion Fundamentals 4 6.1-6.19
  • [7] Gong X(1982)Diffusion in gels Polymer 23 1012-1026
  • [8] Lu H(2009)Optical investigation of diffusion of levofloxacin mesylate in agarose hydrogel J. Biomedical Optics 14 050503/1-050503/3
  • [9] Li S(2009)Thermally enhanced solubility for the shrinking of a nanoink droplet in a surrounding liquid Intern. J. Heat and Mass Transfer 52 222-231
  • [10] Amsden B(2005)Measuring subdiffusion parameters Physical Review E 71 041105-1-041105-11
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