Novel view at hybrid membranes containing star macromolecules using neutron scattering and pervaporation dehydration of acetic acid
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 pecu...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-01-01
|
| Series: | Materials & Design |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127519307907 |
| _version_ | 1818311925321170944 |
|---|---|
| author | Galina Polotskaya Aleхandra Pulyalina Vasily Lebedev Gyula Török Daria Rudakova Ludmila Vinogradova |
| author_facet | Galina Polotskaya Aleхandra Pulyalina Vasily Lebedev Gyula Török Daria Rudakova Ludmila Vinogradova |
| author_sort | Galina Polotskaya |
| collection | DOAJ |
| description | 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. Keywords: Pervaporation, Neutron scattering, Membrane, Polyphenylene oxide, Star macromolecules, Acetic acid – water mixture |
| first_indexed | 2024-12-13T08:09:42Z |
| format | Article |
| id | doaj.art-1217f1e6c31a4b07b45beb22c14f1903 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-13T08:09:42Z |
| publishDate | 2020-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-1217f1e6c31a4b07b45beb22c14f19032022-12-21T23:54:14ZengElsevierMaterials & Design0264-12752020-01-01186Novel view at hybrid membranes containing star macromolecules using neutron scattering and pervaporation dehydration of acetic acidGalina Polotskaya0Aleхandra Pulyalina1Vasily Lebedev2Gyula Török3Daria Rudakova4Ludmila Vinogradova5Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, Russia; Saint Petersburg State University, Institute of Chemistry, 198504 Saint Petersburg, RussiaSaint Petersburg State University, Institute of Chemistry, 198504 Saint Petersburg, Russia; Corresponding author.B.P. Konstantinov Saint Petersburg Nuclear Physics Institute, NRC «Kurchatov Institute», 188300 Leningradskaya Oblast, Gatchina, RussiaResearch Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, Budapest, HungarySaint Petersburg State University, Institute of Chemistry, 198504 Saint Petersburg, RussiaInstitute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, RussiaHybrid 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. Keywords: Pervaporation, Neutron scattering, Membrane, Polyphenylene oxide, Star macromolecules, Acetic acid – water mixturehttp://www.sciencedirect.com/science/article/pii/S0264127519307907 |
| spellingShingle | Galina Polotskaya Aleхandra Pulyalina Vasily Lebedev Gyula Török Daria Rudakova Ludmila Vinogradova Novel view at hybrid membranes containing star macromolecules using neutron scattering and pervaporation dehydration of acetic acid Materials & Design |
| title | Novel view at hybrid membranes containing star macromolecules using neutron scattering and pervaporation dehydration of acetic acid |
| title_full | Novel view at hybrid membranes containing star macromolecules using neutron scattering and pervaporation dehydration of acetic acid |
| title_fullStr | Novel view at hybrid membranes containing star macromolecules using neutron scattering and pervaporation dehydration of acetic acid |
| title_full_unstemmed | Novel view at hybrid membranes containing star macromolecules using neutron scattering and pervaporation dehydration of acetic acid |
| title_short | Novel view at hybrid membranes containing star macromolecules using neutron scattering and pervaporation dehydration of acetic acid |
| title_sort | novel view at hybrid membranes containing star macromolecules using neutron scattering and pervaporation dehydration of acetic acid |
| url | http://www.sciencedirect.com/science/article/pii/S0264127519307907 |
| work_keys_str_mv | AT galinapolotskaya novelviewathybridmembranescontainingstarmacromoleculesusingneutronscatteringandpervaporationdehydrationofaceticacid AT alehandrapulyalina novelviewathybridmembranescontainingstarmacromoleculesusingneutronscatteringandpervaporationdehydrationofaceticacid AT vasilylebedev novelviewathybridmembranescontainingstarmacromoleculesusingneutronscatteringandpervaporationdehydrationofaceticacid AT gyulatorok novelviewathybridmembranescontainingstarmacromoleculesusingneutronscatteringandpervaporationdehydrationofaceticacid AT dariarudakova novelviewathybridmembranescontainingstarmacromoleculesusingneutronscatteringandpervaporationdehydrationofaceticacid AT ludmilavinogradova novelviewathybridmembranescontainingstarmacromoleculesusingneutronscatteringandpervaporationdehydrationofaceticacid |