Bioinspired H-Bond Cross-Linking of Nanostructured Gelatine by Inorganic Goethite a-FeOOH
Green Materials 2024
Anna Šutka, Sanda Bitiņa, Martin Järvekülg, Andris Šutka

This paper reports the effect of goethite nanowire ller on hydrogen (H) linking in gelatine. Nanostructured gelatine that would otherwise be soluble becomes insoluble in water at room temperature if goethite nanowire ller is added. The experimental results reveal a signi cant increase in the gel fraction of the composite with 6 vol% a-iron (III) oxide-hydroxide (a-FeOOH) additive, reaching over 73% after being kept in water, compared with that of pristine gelatine, with a mere 13% gel fraction. In the presented composite, the solubility of gelatine can also be controlled by visible light, as absorption in the narrow-band-gap a-iron (III) oxide-hydroxide results in local heating of nanowires. The illuminated 6 vol% a-iron (III) oxide-hydroxide/gelatine composite shows a gel fraction of 13.4%, while the control sample kept in the dark exhibits a high gel fraction value of 73.8%. The observed remotely switchable disintegration of gelatine by visible light presents a feature that can be used in designing temporary tissue engineering and drug delivery substrates.


Keywords
biomaterials material structure natural materials polymers scaffold
DOI
10.1680/jgrma.23.00001
Hyperlink
https://www.icevirtuallibrary.com/doi/abs/10.1680/jgrma.23.00001

Šutka, A., Bitiņa, S., Järvekülg, M., Šutka, A. Bioinspired H-Bond Cross-Linking of Nanostructured Gelatine by Inorganic Goethite a-FeOOH. Green Materials, 2024, Vol. 13, Article number 2300001. ISSN 2049-1220. e-ISSN 2049-1239. Available from: doi:10.1680/jgrma.23.00001

Publication language
English (en)
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