Pervaporation properties of crazed polyamide - 6

Authors

  • Evgeniy P. Ageev Doctor of Chemistry, Prof., Moscow M.V. Lomonosov State University, Chemistry Department, Division of Physical Chemistry, Chemistry Department, Moscow State University, Moscow
  • Natalya N. Matushkina PHD, Senior Researcher, Moscow M.V. Lomonosov State University, Chemistry Department, Division of Physical Chemistry, Chemistry Department, Moscow State University, Moscow, e-mail: mnn@phys.chem.msu.ru
  • Alla A. Dolgova PHD, Scientist, Moscow M.V. Lomonosov State University, Chemistry Department, Division of High molecular compounds. Postal address: Chemistry Department, Moscow State University, Moscow

Keywords:

aliphatic polyamides, crazing, pervaporation.

Abstract

The temperature dependence of permeability is studied in the process of pervaporation of water and
acetone through PA-6, and also transport characteristics of isothermal process of pervaporation in the system
crazed PA-6 – water – isopropanol. It is shown that the values of permeability coincide at the increase and at
the decrease of temperature, but undergoes a stepwise change at 50°С, which corresponds to glass-transition
temperature of the polymer in water and to the transition to high-elasticity state. Crazing of PA-6 leads to the
increase of permeability without changes in selectivity. Pervaporation proceeds most effectively at stretching
degrees of 50 and 90%.

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Published

2019-11-26

Issue

Vol. 11 No. 3 (2011): Sorbtsionnye i Khromatograficheskie Protsessy

Section

Статьи

How to Cite

Pervaporation properties of crazed polyamide - 6. (2019). Sorbtsionnye I Khromatograficheskie Protsessy, 11(3). https://journals.vsu.ru/sorpchrom/article/view/1932

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