Temat: vapour permeation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Vapour permeation study of water and ethanol through crosslinked chitosan and alginate membranes
Autorzy:: Turczyn, Roman
Gnus, Małgorzata
Dudek, Gabriela
Tórz, Artur
Łącka, Dorota
Strzelewicz, Anna
Łapkowski, Mieczysław
Powiązania:: https://bibliotekanauki.pl/articles/1034919.pdf
Data publikacji:: 2015
Wydawca:: Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:: alginate
chitosan
crosslinking agents
vapour permeation
Opis:: A vapour permeation of water and ethanol through homogenous chitosan and alginate membranes was investigated. The influence of the polymer matrix and crosslinking agents, and measurement protocol on the transport properties were discussed. The conducted experiments showed the greater separation factor, better stability and resistant to solvents for chemically crosslinked membranes. On the other hand, stronger association of the matrix, than the physical, caused decrease of vapour fluxes.
Źródło:: Progress on Chemistry and Application of Chitin and its Derivatives; 2015, 20; 281-288
1896-5644
Pojawia się w:: Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Influence of chitosan molecular weight and degree of deacetylation on membrane physicochemical and separation properties in ethanol dehydration by the vapour permeation process
Autorzy:: Gnus, Małgorzata
Powiązania:: https://bibliotekanauki.pl/articles/1034007.pdf
Data publikacji:: 2020
Wydawca:: Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:: chitosan
degree of deacetylation
molecular weight
separation properties
vapour permeation
Opis:: Membranes were prepared using three chitosans with different molecular weights and degrees of deacetylation. The influence of chitosan features on membrane physicochemical properties, i.e. degree of swelling, contact angle and tensile strength, as well as membrane separation properties in ethanol dehydration by the vapour permeation process are discussed. The conducted experiments showed that an increase in the chitosan molecular weight led to an increase in the membrane surface contact angle concomitant with a decrease in the material selectivity coefficient. On the other hand, an increase in the chitosan degree of deacetylation caused a reduction in ethanol and improved the water permeate flux. There was greater selectivity in the test process for membranes prepared from chitosan with the lowest molecular weight.
Źródło:: Progress on Chemistry and Application of Chitin and its Derivatives; 2020, 25; 79-93
1896-5644
Pojawia się w:: Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:: Biblioteka Nauki

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