A Device for Determination of Vapour Sorption in Polymers

Autoři

  • O. Vopička Department of Physical Chemistry, Polymer Department, Institute of Chemical Technology, Prague
  • V. Hynek Department of Physical Chemistry, Polymer Department, Institute of Chemical Technology, Prague
  • K. Friess Department of Physical Chemistry, Polymer Department, Institute of Chemical Technology, Prague
  • M. Šípek Department of Physical Chemistry, Polymer Department, Institute of Chemical Technology, Prague
  • P. Sysel Department of Physical Chemistry, Polymer Department, Institute of Chemical Technology, Prague

Abstrakt

The principle of the device consists in measuring the mass of vapour sorbed in a sample as a function of time using the McBain spiral balance monitored by a camera system. Absolute pressure is monitored by a capacitance pressure gauge. The maximum amount of the sample is limited to 0.5 g and the mass change sensitivity threshold is 10 μg. The device makes it possible to measure sorption kinetics with good accuracy. As an example, the kinetics of sorption of p-xylene vapours by low-density polyethylene membrane was measured and the resulting sorption isotherm was determined.

Stahování

Publikováno

15.05.2009

Jak citovat

Vopička, O., Hynek, V., Friess, K., Šípek, M., & Sysel, P. (2009). A Device for Determination of Vapour Sorption in Polymers. Chemické Listy, 103(4). Získáno z http://ww.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/1551

Číslo

Vol 103 No 4 (2009)

Sekce

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