Structure and transport properties of mixed-matrix membranes based on polyimides with ZrO2 nanostars

Maria P. Sokolova, Michael A. Smirnov, Pavel Geydt, Alexander N. Bugrov, Sami Seppo Ovaska, Erkki Lahderanta, Alexander M. Toikka

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

15 Цитирования (Scopus)

Аннотация

Mixed-matrix membranes based on amorphous and semi-crystalline polyimides with zirconium dioxide (ZrO2) nanostars were synthesized. Amorphous poly(4,4'-oxydiphenylenepyromellitimide) and semi-crystalline polyimide prepared from 1,4-bis(4-aminophenoxy)benzene and 4,4'-oxydiphthalic anhydride were used. The effect of ZrO2 nanostars on the structure and morphology of nanocomposite membranes was studied by wide-angle X-ray scattering, scanning electron microscopy, atomic force microscopy, and contact angle measurements. Thermal properties and stability were investigated by thermogravimetric analysis and differential scanning calorimetry. Transport properties of hybrid membranes containing 5 wt % ZrO2 were tested for pervaporation of a mixture of butanol-water with 10 wt % H2O content. It was found that a significant amount of the ZrO2 added to the semi-crystalline polyimide is encapsulated inside spherulites. Therefore, the beneficial influence of inorganic filler on the selectivity of mixed-matrix membrane with respect to water was hampered. Mixed-matrix membranes based on amorphous polymer demonstrated the best performance, because water molecules had higher access to inorganic particles.

Язык оригиналаанглийский
Номер статьи403
ЖурналPolymers
Том8
Номер выпуска11
DOI
СостояниеОпубликовано - 18 ноя 2016
Опубликовано для внешнего пользованияДа

Предметные области OECD FOS+WOS

  • 2.05 ТЕХНОЛОГИЯ МАТЕРИАЛОВ
  • 1.04 ХИМИЧЕСКИЕ НАУКИ
  • 1.04.UY НАУКА О ПОЛИМЕРАХ

ГРНТИ

  • 31 ХИМИЯ

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