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

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DOIResolve DOI: http://doi.org/10.1002/(SICI)1099-0488
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TypeArticle
Journal titleJournal of Polymer Science Part B: Polymer Physics
Volume36
Issue6
Pages977982; # of pages: 6
Subjectcompressed gases; polymer; plasticization; high-pressure DSC
AbstractA 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.>
Publication date
LanguageEnglish
AffiliationNRC Institute for Chemical Process and Environmental Technology; National Research Council Canada
Peer reviewedNo
NRC number37648
NPARC number12726890
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Record identifierb8d3ade7-1306-4b51-a187-cc2e275792d5
Record created2009-10-17
Record modified2016-05-09
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