Autor: Piegat, Agnieszka - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Emulsification parameters study on micelles formation from hydrophobically modified chitosan
Autorzy:: Piegat, Agnieszka
Niemczyk, Agata
Goszczyńska, Agata
Powiązania:: https://bibliotekanauki.pl/articles/2131523.pdf
Data publikacji:: 2021
Wydawca:: Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:: emulsification
hydrophobically modified chitosan
micelles
self-assembly
amphiphilic properties
Opis:: A series of N,O-acylated chitosan derivatives were emulsified with different fatty acids. Hydrophobically modified chitosan derivatives were expected to exhibit self-assembly behaviour resulting in micelle formation. Several parameters of the oil-in-water emulsification process were investigated: mixing method, speed and duration, volume oil phase and addition of modifiers. Their influence on micellar Z-average diameter, size distribution and Zeta potential was analysed based on dynamic light scattering measurements. There were various relations between the hydrodynamic behaviour of chitosan derivatives, their chemical structure and the process parameters. Additionally, the obtained micelles could serve as active compound carriers because they encapsulated two model substances, namely ibuprofen and α-tocopherol.
Źródło:: Progress on Chemistry and Application of Chitin and its Derivatives; 2021, 26; 178-190
1896-5644
Pojawia się w:: Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: The influence of c18-fatty acids on chemical structure of chitosan derivatives and their thermal properties
Autorzy:: Niemczyk, Agata
Kmieciak, Alan
El Fray, Mirosława
Piegat, Agnieszka
Powiązania:: https://bibliotekanauki.pl/articles/1034661.pdf
Data publikacji:: 2016
Wydawca:: Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:: N
O-acylation
chemical structure
chitosan
fatty acids
thermal properties
Opis:: Chitosan derivatives with a series of fatty acids (FA) have been developed using simultaneous N- and O-acylation reaction by the combination of two ways of conducting the reaction, i.e. a carbodiimide catalysis and ionic amino group protection. The chemical structure of chitosan derivatives as well as the characterization of the FA substitution degree were done by the IR spectra analysis. The correlation between the substitution of the chitosan functional groups as well as the saturation of FA and the changes of structural and thermal properties of the derivatives has been presented.
Źródło:: Progress on Chemistry and Application of Chitin and its Derivatives; 2016, 21; 165-175
1896-5644
Pojawia się w:: Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:: Biblioteka Nauki