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Citation: Liu Hong-Bin, Ren Yan, Wang Yu-Xin, Wang Shi-Chang, An Ying-Li, Zuo Ju. Solute Diffusion in the Dynamic Network of Gel[J]. Acta Physico-Chimica Sinica, ;1999, 15(03): 210-215. doi: 10.3866/PKU.WHXB19990304 shu

Solute Diffusion in the Dynamic Network of Gel

1.
Chemical Engineering Research Center,Tianjin University,Tianjin 300072

Received Date: 4 June 1998
Available Online: 15 March 1999

A study was carried out both theoretically and experimentally on the solute diffusion in gel networks. The emphasis of this study was on the effect of network fluctuation. A model of diffusion was established based on the theory of dynamic disordered hopping, which was originally developed to describe the conduction of charged particles in polyelectrolyte. Temperature sensitive poly(n-isopropylacrylamide) gels were prepared and methyl blue was chosen as a solute for the diffusion experiment. Laser light scattering spectroscopy was used to study the dynamic behaviors of the gel network. Theoretical predictions agree qualitatively with the experimental results.
- Gel,
- Density fluctuation,
- Percolation theory,
- Dynamic disordered hopping,
- Diffusion
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