Первапорационные свойства крейзованного полиамида - 6

Evgeniy P. Ageev; Natalya N. Matushkina; Alla A. Dolgova

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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References

1. Волынский А.Л., Бакеев Н.Ф. Структурная самоорганизация аморфных
полимеров./ М.: Физматлит, 2005, 232 с.
2. Агеев Е.П., Струсовская Н.Л., Долгова А.А. Влияние сорбционной предыстории
и процесса крейзования на набухание пленок алифатических полиамидов.//
Сорбционные и хроматографические процессы. 2010 (в печати).

Pervaporation properties of crazed polyamide - 6

Abstract

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References