Detail publikace

Multifunctional Electrospun Nanofibers Based on Biopolymer Blends and Magnetic Tubular Halloysite for Medical Applications

KHUNOVÁ, V. PAVLIŇÁK, D. ŠAFAŘÍK, I. ŠKRÁTEK, M. ONDREÁŠ, F.

Originální název

Multifunctional Electrospun Nanofibers Based on Biopolymer Blends and Magnetic Tubular Halloysite for Medical Applications

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Tubular halloysite (HNT) is a naturally occurring aluminosilicate clay with a unique combination of natural availability, good biocompatibility, high mechanical strength, and functionality. This study explored the effects of magnetically responsive halloysite (MHNT) on the structure, morphology, chemical composition, and magnetic and mechanical properties of electrospun nanofibers based on polycaprolactone (PCL) and gelatine (Gel) blends. MHNT was prepared via a simple modification of HNT with a perchloric-acid-stabilized magnetic fluid–methanol mixture. PCL/Gel nanofibers containing 6, 9, and 12 wt.% HNT and MHNT were prepared via an electrospinning process, respecting the essential rules for medical applications. The structure and properties of the prepared nanofibers were studied using infrared spectroscopy (ATR-FTIR) and electron microscopy (SEM, STEM) along with energy-dispersive X-ray spectroscopy (EDX), magnetometry, and mechanical analysis. It was found that the incorporation of the studied concentrations of MHNT into PCL/Gel nanofibers led to soft magnetic biocompatible materials with a saturation magnetization of 0.67 emu/g and coercivity of 15 Oe for nanofibers with 12 wt.% MHNT. Moreover, by applying both HNT and MHNT, an improvement of the nanofibers structure was observed, together with strong reinforcing effects. The greatest improvement was observed for nanofibers containing 9 wt.% MHNT when increases in tensile strength reached more than two-fold and the elongation at break reached a five-fold improvement.

Klíčová slova

magnetic; halloysite; nanotubes; nanofibers; biopolymer; polycaprolactone; gelatine; electrospinning

Autoři

KHUNOVÁ, V.; PAVLIŇÁK, D.; ŠAFAŘÍK, I.; ŠKRÁTEK, M.; ONDREÁŠ, F.

Vydáno

9. 11. 2021

Nakladatel

MDPI

ISSN

2073-4360

Periodikum

Polymers

Ročník

13

Číslo

22

Stát

Švýcarská konfederace

Strany od

1

Strany do

15

Strany počet

15

URL

https://www.mdpi.com/2073-4360/13/22/3870

Plný text v Digitální knihovně

http://hdl.handle.net/11012/203102

BibTex

@article{BUT173237,
  author="Viera {Khunová} and David {Pavliňák} and Ivo {Šafařík} and Martin {Škrátek} and František {Ondreáš}",
  title="Multifunctional Electrospun Nanofibers Based on Biopolymer Blends and Magnetic Tubular Halloysite for Medical Applications",
  journal="Polymers",
  year="2021",
  volume="13",
  number="22",
  pages="1--15",
  doi="10.3390/polym13223870",
  issn="2073-4360",
  url="https://www.mdpi.com/2073-4360/13/22/3870"
}