On the plasticization of poly(2,6-dimethyl phenylene oxide) by CO₂

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DOIResolve DOI: http://doi.org/10.1002/polb.1994.090321512
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TypeArticle
Journal titleJournal of Polymer Science Part B: Polymer Physics
Volume32
Issue15
Pages25492553; # of pages: 5
SubjectPlasticization; Poly(2,6-dimethyl phenylene oxide); PPO-CO₂; Glass transition
AbstractChange in the glass transition temperature, Tg, of poly(2,6-dimethyl phenylene oxide), PPO, due to the dissolved CO₂ has been measured as a function of the gas pressure, p, using a high-pressure DSC cell. At 61.2 atm, the highest pressure studied, Tg is depressed by 31.6°C. The depression in Tg is found to be linear with pressure, with dTg/dp of −0.5°C atm⁻¹. The experimental results are in fair agreement with those calculated from a quasilattice solid-solution model for polymer-diluent systems. The present results, however, differ markedly from a recent investigation on PPO-CO₂ system which reported a depression in Tg of 226°C at 60 atm and a dTg/dp of −3.8°C atm⁻¹
Publication date
LanguageEnglish
AffiliationNRC Institute for Chemical Process and Environmental Technology; National Research Council Canada
Peer reviewedYes
NRC number37569
NPARC number14503558
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Record identifier92b743c0-a659-420d-885b-3170a18121d1
Record created2010-03-01
Record modified2016-05-09
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