Interrelation of Hierarchy of Structures at Comparison of Linear and Cross-linked Polymer Compounds

Authors

  • Ibragim Suleimenov Institute of Ionosphere, Kamenskoe Plateau, 480020 Almaty, Kazakhstan
  • Galym Mamytbekov Institute of Chemical Sciences, 107 Valikhanov Str. 480100 Almaty, Kazakhstan
  • Esen Bekturov Institute of Chemical Sciences, 107 Valikhanov Str. 480100 Almaty, Kazakhstan

DOI:

https://doi.org/10.18321/ectj567

Abstract

The comparison of behavior of a linear polymer compounds and cross-linked networks are carried out. It is shown, that the correspondence between rheological behavior of a linear polymer compound and macroscopic behavior of its cross-linked analog is determined by topology of structures describing a hydrogel as qualitatively new object as well as by the type of polymer – solvent interactions. In this situation
swelling degree is completely described by the Katchalsky – Lifson’s theory. Moreover it is possible to
predict microscopic behavior of macromolecular chains on the base of experimental studies of macroscopic
specimens of the gel. Such investigations may be carried out in direct way for organogels. When the gel is charged (polyelectrolyte effect takes place) it is necessary to make some correction. The fact is due to so called effect of concentration redistribution, which occurs when surface of the gel acts as a membrane. In such situation the concentration of low-molecular salt inside gel may be quite more low then the concentration of the salt outside specimen. Thus in the solutions of ionogenic salts real behavior of the
specimen is determined not average concentration of salt, but the real concentration of salt inside of the
gel. Measuring this concentration experimentally it is possible to carried out investigations of charged
macromolecular chains on the base of macroscopic specimens too.

References

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Published

2001-12-10

How to Cite

Suleimenov, I., Mamytbekov, G., & Bekturov, E. (2001). Interrelation of Hierarchy of Structures at Comparison of Linear and Cross-linked Polymer Compounds. Eurasian Chemico-Technological Journal, 3(3), 201–204. https://doi.org/10.18321/ectj567

Issue

Vol. 3 No. 3 (2001)

Section

Articles

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