{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T23:09:23Z","timestamp":1790809763297,"version":"4.1.0"},"reference-count":86,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2019,6,17]],"date-time":"2019-06-17T00:00:00Z","timestamp":1560729600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Minimising the transport of corrosive reactants such as carbon dioxide, hydrogen sulfide and chloride ions to the surfaces of carbon steel pipes by the use of polymer barrier layers is of major interest in the oil and gas sector. In these applications, there is a requirement to assess the performance of these barrier layers although it is difficult to perform long-term predictions of barrier properties from the results of short-term measurements. New methodologies have been successfully developed to study the permeability of carbon dioxide (CO2) and hydrogen sulfide (H2S) through polymer layers under variable conditions of elevated temperatures of 100 \u00b0C and pressures of the order of 400 barg. In situ variation of the temperature and the inlet pressure of the gas (or gas mixture) allowed the activation energy and pressure dependence of the permeability to be determined without outgassing of the specimen. These methodologies have been applied to the measurement of the permeability of moulded polyphenylene sulfide (PPS) to supercritical CO2 in the presence of H2S. The diffusion coefficients of sodium chloride and potassium chloride through both PPS and polyether ether ketone (PEEK) at ambient temperature and pressure have also been measured.<\/jats:p>","DOI":"10.3390\/polym11061056","type":"journal-article","created":{"date-parts":[[2019,6,17]],"date-time":"2019-06-17T11:24:45Z","timestamp":1560770685000},"page":"1056","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":27,"title":["Permeation of a Range of Species through Polymer Layers under Varying Conditions of Temperature and Pressure: In Situ Measurement Methods"],"prefix":"10.3390","volume":"11","author":[{"given":"Bernadette","family":"Craster","sequence":"first","affiliation":[{"name":"TWI Ltd, Granta Park, Great Abington, Cambridge CB21 6AL, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Timothy","family":"Jones","sequence":"additional","affiliation":[{"name":"Schlumberger Cambridge Research, High Cross, Madingley Rd, Cambridge CB3 0EL, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,6,17]]},"reference":[{"key":"ref_1","first-page":"1","article-title":"Corrosion problems during oil and gas production and its mitigation","volume":"4","author":"Popoola","year":"2013","journal-title":"IJIC"},{"key":"ref_2","first-page":"34","article-title":"The longest war","volume":"28","author":"Asrar","year":"2016","journal-title":"Oilfield Rev."},{"key":"ref_3","unstructured":"Saithala, J.R., Illson, T., Thompson, I., Hilmi, A., Gao, Y., Siddle, A., and Ramage, A. 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