A novel apparatus based on a photoacoustic gas detection system for measuring permeation parameters of polymer samples

Zoltán Filus, Tibor Ajtai, Zoltán L. Horváth, Zoltán Bozóki, Gábor Pap, Tibor Nagy, Tamás Katona, Gábor Szabó

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Gas permeability parameters of polymer samples were determined from measurements performed with a novel permeation apparatus, into which a room temperature diode laser-based photoacoustic (PA) system-as a sensitive and selective gas concentration measuring tool-was incorporated. The fully automatic and flow-through mode operation of the PA instrument makes it possible to perform the measurements on-line, i.e. sampling from the gaseous phase is eliminated. The system's performance was demonstrated by measuring methane permeation through rubber compounds used in flexible offshore pipes. The system proved to be capable of not only measuring the gas concentration throughout the entire permeation process with high precision, but also of following methane release from one type of rubber sample. A numerical fitting algorithm was introduced with which the measurement time required for the precise determination of permeability parameters can be reduced by a factor of 2-5.

Original languageEnglish
Pages (from-to)606-613
Number of pages8
JournalPolymer Testing
Volume26
Issue number5
DOIs
Publication statusPublished - Aug 1 2007

    Fingerprint

Keywords

  • Diffusion
  • Numerical fitting
  • Permeability
  • Photoacoustics
  • Polymer
  • Rubber

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this