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An in-situ study of plasticization of polymers by high-pressure gases

Par Conseil national de recherches du Canada

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DOITrouver le DOI : https://doi.org/10.1002/(SICI)1099-0488(19980430)36:6<977::AID-POLB5>3.0.CO;2-D
AuteurRechercher : 1; Rechercher : 1
Affiliation
  1. Conseil national de recherches du Canada. Institut de technologie des procédés chimiques et de l'environnement du CNRC
FormatTexte, Article
Sujetcompressed gases; polymer; plasticization; high-pressure DSC
Résumé
A high-pressure differential scanning calorimetric technique is described for studying polymer plasticization by compressed gases at pressures to 100 atm. The in situ measurements avoid problems due to gas desorption encountered with conventional DSCs, thus providing an accurate way to determine the change in glass transition temperature, Tg, with pressure, p. The entire Tg–p curve can be established in less than 2 days. The glass transition was observed as a sharp step in the case of 100–200- mm thin samples, whereas thicker samples gave a broad transition; highly reproducible results were obtained for the thin samples. For PS–CO2, the measured Tgs under various pressures were found to be in good agreement with literature values. Results for the systems PS–HFC134a, PVC–CO2, and PC–CO2 are also reported.>
Date de publication
Maison d’éditionWiley
Dans
  • Journal of Polymer Science Part B: Polymer Physics 36, nº 6 : 977–982.
Langueanglais
Publications évaluées par des pairsOui
Numéro du CNRCNRCC 37648
Numéro NPARC12726890
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Identificateur de l’enregistrementb8d3ade7-1306-4b51-a187-cc2e275792d5
Enregistrement créé2009-10-17
Enregistrement modifié2020-03-20
Date de modification :