Critical adsorbing properties in slits predicted by traditional polymer adsorption theories on Ising lattice

The critical adsorbing properties in slits and three-dimension （3D） phase transitions can be predicted by either Freed theory or Flory-Huggins theory. The mean field approximation in Flory-Huggins theory may cause apparent system errors, from which one can observe two-dimension （2D） phase transition...

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Bibliographic Details
Published in:Chinese science bulletin 2005, Vol.50 (16), p.1691-1695
Main Author: LIU, Meitang
Format: Article
Language:English
Subjects:
Adsorption
Gibbs等温线
Ising model
Monte Carlo simulation
Phase transitions
Polymers
Slits
Thermodynamics
压力分布
吸附理论
聚合体
裂缝预报
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Summary:The critical adsorbing properties in slits and three-dimension （3D） phase transitions can be predicted by either Freed theory or Flory-Huggins theory. The mean field approximation in Flory-Huggins theory may cause apparent system errors, from which one can observe two-dimension （2D） phase transitions although it is not true. Monte Carlo simulation has demonstrated that Freed theory is more suitable for predicting adsorbing properties of fluids in slits than Flory-Huggins theory. It was found that from Freed theory prediction multilevel adsorption occurs in slits and the spreading pressure curves exhibit binodal points.
ISSN:1001-6538
2095-9273
1861-9541
2095-9281
DOI:10.1360/982004-320