Novel view at hybrid membranes containing star macromolecules using neutron scattering and pervaporation dehydration of acetic acid

Galina Polotskaya, Alexandra Pulyalina, Vasiliy Lebedev, Guliy Torok, Daria Rudakova, Ludmila Vinogradova

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

4 Цитирования (Scopus)

Аннотация

Hybrid membranes based of polyphenylene oxide matrix and star macromolecules (up to 5 wt%) containing six polystyrene and six poly-2-vinylpyridine arms attached to a common fullerene C60 center were prepared and successfully used for pervaporation separation of acetic acid – water mixtures. The peculiarities of the hybrid membrane structure and properties were studied by small-angle neutron scattering in two states (dry and swollen in deuterated acetic acid). It was established that star macromolecules are non-uniformly distributed in the matrix and form aggregates; they increase in the size up to ~60% during swelling of membranes in deuterated acetic acid. In pervaporation, the total flux through the membrane rises with increasing both the star macromolecule content in membrane and water concentration in the feed. Separation factor reaches its greatest value when the hybrid membrane contains 5 wt% star macromolecules.
Язык оригиналаанглийский
Номер статьи108352
ЖурналMaterials and Design
Том186
Ранняя дата в режиме онлайн13 ноя 2019
СостояниеОпубликовано - 15 янв 2020

Ключевые слова

  • Pervaporation
  • MEMBRANES
  • pervaporation dehydration

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