Transfer processesin polymermembranes. Part 3

Authors

  • Инесса Анатольевна Буртная National Technical University of Ukraine "Kyiv Polytechnic Institute" Pobedy avenue, 37, Building 4, Kyiv, Ukraine, 03056, Ukraine
  • Отар Отарович Гачечиладзе JP "The Georgian-Ukrainian House" Museyniy bystreet, 10, Kyiv, Ukraine, 01001, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2013.18713

Keywords:

polymeric membrane, solubility, pervaporation, organic substances, mass transfer

Abstract

The basic thermodynamic parameters and conditions of dissolution of organic liquid in polymers are considered in the paper. Today, the problem of predicting the solubility of organic substances of multicomponent mixtures in polymeric membranes is highly relevant in the selection of polymeric materials to create pervaporation membranes. Clear and unambiguous explanations for the dissolution process, and relationship between the basic thermodynamic parameters of spontaneous dissolution or mixing are given in the paper.

It is shown that at spontaneous dissolution and , the more the absolute value of these values is, the further the system is from the equilibrium state, the greater the affinity of the system components is and the higher the solubility degree is. Besides, the solubility will take place at any ratio of components, if the molar enthalpy of mixing ∆Hmix is close to zero, i.e. when  ∆Hmix → 0 and , and then the polymer can be dissolved in the given solvent. It is experimentally proved that some solvents can be adsorbed in the active layer of the polymer, but not penetrate into the zone of dissolution phase, although according to the values of HSP parameters, they should be well dissolved. Such deviations may be connected with the sizes of solvent molecules.

Author Biographies

Инесса Анатольевна Буртная, National Technical University of Ukraine "Kyiv Polytechnic Institute" Pobedy avenue, 37, Building 4, Kyiv, Ukraine, 03056

PhD, Associate Professor

Department of Bioengineering and Engineering. Faculty of Biotechnology and Bioengineering

Отар Отарович Гачечиладзе, JP "The Georgian-Ukrainian House" Museyniy bystreet, 10, Kyiv, Ukraine, 01001

Director

References

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Published

2013-12-16

How to Cite

Буртная, И. А., & Гачечиладзе, О. О. (2013). Transfer processesin polymermembranes. Part 3. Eastern-European Journal of Enterprise Technologies, 6(6(66), 4–7. https://doi.org/10.15587/1729-4061.2013.18713

Issue

Vol. 6 No. 6(66) (2013): Technology of organic and inorganic substanse

Section

Technology organic and inorganic substances

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Copyright (c) 2014 Инесса Анатольевна Буртная, Отар Отарович Гачечиладзе

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