Effect of supercritical carbon dioxide on ultradispersed polytetrafluoroethyleneстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The morphology and structure of ultradispersed polytetrafluoroethylene (UPTFE, FORUM trademark) samples after treatment with supercritical carbon dioxide (sc-CO2) were studied by physicochemical methods. It was shown that, in sc-CO2, low-molecular-weight fractions are dissolved and removed from pristine UFTFE. The structures of separated fractions were studied. With an increase in the dissolving power of sc-CO2 (by increasing pressure and varying temperature), the fractionation process gradually involves oligomers with higher molecular weights. (C) 2011 Elsevier B.V. All rights reserved.