Polymer devolatilization is a unit operation through which volatile organic compounds (VOCs) are removed from the synthesized polymer, in compliance with numerous regulations[1]. This is a complex process involving mass transfer across gas-liquid interface, which is generated, in most cases, by foaming[2]. This operation is governed by several parameters that need to be finely tuned to increase devolatilization efficiency. The increased demand for low VOC contents requires constant process improvements with regard to process parameters, such as polymer residence time, apparatus design and interfacial area. This study specifically addresses the effect of static devolatilizer design on removal efficiency and foaming phenomena. To this end, we designed and built a lab-scale “cold” model devolatilizer with flexible and interchangeable components. We chose O2 enriched polydimethylsiloxane (PDMS) as model system, to simulate volatile removal in high temperature static devolatilizer. We analyzed in-line O2 removal efficiency with amperometric probes inserted in the devolatilizer’s vessel and we accomplished a preliminary characterization of fluid dynamics and bubbles dynamics, through image analysis. References [1] The European Parliament and the Council of the European Union. “Directive 2004/42/CE of the European Parliament and of the Council of 21 April 2004 on the limitation of emissions of volatile organic compounds due to the use of organic solvents in certain paints and varnishes and vehicle refinishing products and amendi”. In: Official Journal of the European Union L 143 (2004), pp. 87–96. url: http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX: 32004L0042:EN:NOT. [2] R. J. Albalak et al. Polymer Devolatilization. New York: Marcel Dekker Inc., 1996.