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Wyszukujesz frazę "Wolska, Joanna" wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Chitosan and chitosan-polyethylenimine microspheres prepared by membrane emulsification and their application for drug delivery systems
Autorzy:
Wolska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1034551.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
chitosan
membrane emulsification
microspheres
polyethyleneimine
release
sorption
Opis:
The aim of this paper was to prepare chitosan microspheres characterised by a narrow dispersion of dimensions, suitable for application for drug delivery systems (DDS). The materials, unmodified as well as functionalised using polyethyleneimine were then used for encapsulation of drug-mimicking dyes. The polymeric beads were prepared by one stage process of membrane emulsification. The encapsulation and then evaluation of the release of an active component was carried out using two cytostatics-mimicking dyes: methyl orange and Congo red. The efficiency of encapsulation changed with a type of microspheres and the type of a dye. The highest sorption towards dyes was revealed by PEI-modified chitosan microspheres. Methyl orange was released with the better efficiency than Congo red from all types of microspheres.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2017, 22; 220-235
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chitosan microspheres prepared by membrane emulsification for chromium removal from aqueous solutions
Autorzy:
Wolska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1034646.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
biosorption
chitosan
chromium VI
membrane emulsification
microspheres
modification
Opis:
Chitosan is naturally abundant biopolymer that could be used as chelating sorbent for removal of metal ions from aqueous solutions. In this study the uniform-sized chitosan microspheres and their modified derivatives were prepared by using the one stage membrane emulsification process. The obtained sorbents were used for removal of chromium VI ions. The sorption evaluation was carried out at different initial ion concentrations and allowed to fit the experimental data to Langmuir isotherm in the case of unmodified materials and to Freundlich isotherm in the case of modified microspheres. The highest sorption towards chromium has been shown by unmodified chitosan with medium molecular weight. The calculated maximum sorption capacity for this polymer was found to be 1.6 mmol/g.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2016, 21; 203-216
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation and characterization of chitosan-agar films
Autorzy:
Wolska, Joanna
Setkowicz, Joanna
Maliszewska, Irena H.
Powiązania:
https://bibliotekanauki.pl/articles/1034044.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
agar
bee pollen
chitosan
honey
wound dressings
Opis:
Hydrogel films composed of chitosan and agar or chitosan, agar and honey/bee pollen were prepared; they could be used as active wound dressings. During this study, various types of gel films were prepared using chitosan with different molecular weights and ratios of the two biopolymers. In addition, compositions with different amounts of honey or bee pollen were obtained. The selected samples were characterized by determining typical properties that are important for wound dressings. The best twocomponent films had a chitosan to agar weight ratio of 2:1. From among the examined tri-component films, the 2:1:0.5 weight ratio of chitosan, agar and 50 wt% honey solution was the best composition.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2020, 25; 210-226
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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