PREPARATION AND CHARACTERIZATION OF NANOFIBROUS MATERIALS WITH A SHISHKEBAB STRUCTURE

1 HAVLÍČKOVÁ Kristýna
Co-authors:
1 LISNENKO Maxim 1 HAUZEROVÁ Šárka 1 LUKÁŠ David 1 JENČOVÁ Věra 1 KUŽELOVÁ KOŠŤÁKOVÁ Eva
Institution:
1 Technical University of Liberec, Faculty of Science, Humanities and Education, Department of Chemistry, Liberec, Czech Republic, EU, kristyna.havlickova@tul.cz
Conference:
14th International Conference on Nanomaterials - Research & Application, OREA Congress Hotel Brno, Czech Republic, EU, October 19 - 21, 2022
Proceedings:
Proceedings 14th International Conference on Nanomaterials - Research & Application
Pages:
200-204
ISBN:
978-80-88365-09-9
ISSN:
2694-930X
Published:
23rd November 2022
Proceedings of the conference have already been published in Scopus and we are waiting for evaluation and potential indexing in Web of Science.
Metrics:
195 views / 97 downloads
Abstract

Biodegradable nanofiber materials are widely used for biomedical applications such as tissue engineering. These materials are characterized by submicron fibre diameter, small pore size, and large specific surface area (surface to volume ratio), and this structure is very similar to the natural extracellular matrix and is a favorable environment for the growth of eukaryotic cells. These days research focuses on other modifications of nanofiber structures for upgrades these structures or to create specific properties e.g. antimicrobial character. Fibre morphology and structure are able modified during their preparation, a suitable method for that is electrospinning technology and post-process modification. Electrospun materials with nanofiber backbone decorated with protruding periodic pattern of polymer crystals are termed nanofiber shish-kebabs. The shish-kebab structure can be formed by post-process recrystallization in suitable liquids (dilute polymer solution, partial solvent, or a mixture of solvent and non-solvent, solvent or partial solvent, or dilute polymer solution evaporation. The crystal period can be controlled to be a few hundreds of nanometres. Partial enzyme-catalyzed degradation of electrospun nanofibers is another method to prepare a similar structure. In this case, amorphous parts of polymer nanofibers are preferentially degraded, and the remaining macromolecules form new structures, mainly crystal structures resembling nanofiber shish-kebab. The aim of this study was preparation, description, and characterization of mentioned structure.

Keywords: Electrospinning, shish-kebab structure, post-process modification, recrystallization, polycaprolactone, enzymatic-degradation

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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