- Tytuł:
- Characterisation of chitosan after cross-linking by tannic acid
- Autorzy:
-
Sionkowska, Alina
Kaczmarek, Beata
Lewandowska, Katarzyna - Powiązania:
- https://bibliotekanauki.pl/articles/1035183.pdf
- Data publikacji:
- 2014
- Wydawca:
- Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
- Tematy:
-
chitosan
cross-linking
mechanical properties
tannic acid - Opis:
- Chitosan is widely applied in biomedical and cosmetic fields. For this reason, there is a need to modify this biopolymer to achieve new properties of chitosan-based materials. The properties of chitosan can be modified by several cross-linking methods. In this work, we used the chemical cross-linking of chitosan with tannic acid, after which cross-linked chitosan was shaped into a 3D structure by the lyophilisation process. For the material obtained, FTIR-ATR analysis was performed to characterise the structure of cross-linked chitosan. Moreover, mechanical properties and swelling properties were measured for chitosan before and after cross-linking. The results show that several properties of chitosan can be changed after cross-linking by tannic acid. The positions of bands in the FTIR spectra of chitosan were shifted after cross-linking. Mechanical properties were altered for cross-linked chitosan. However, the highest compressive modulus was observed for pure chitosan. The lowest compressive modulus was observed for chitosan cross-linked with 20 wt% of tannic acid. Swelling behaviour also depends on the cross-linking of chitosan. It decreases for chitosan after cross-linking by tannic acid. Overall, the properties of cross-linked chitosan depend on the amount of tannic acid used for modification. This method of cross-linking can be useful for obtaining materials with specific properties.
- Źródło:
-
Progress on Chemistry and Application of Chitin and its Derivatives; 2014, 19; 135-138
1896-5644 - Pojawia się w:
- Progress on Chemistry and Application of Chitin and its Derivatives
- Dostawca treści:
- Biblioteka Nauki
Artykuł