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Multifunctional electrospun nanofibers based on biopolymer blends and magnetic tubular halloysite for medical applications
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SYSNO ASEP 0549464 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Multifunctional electrospun nanofibers based on biopolymer blends and magnetic tubular halloysite for medical applications Tvůrce(i) Khunová, V. (SK)
Pavliňák, D. (CZ)
Šafařík, Ivo (BC-A) RID, ORCID
Škrátek, M. (SK)
Ondreáš, F. (CZ)Číslo článku 3870 Zdroj.dok. Polymers. - : MDPI
Roč. 13, č. 22 (2021)Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova magnetic ; halloysite ; nanotubes ; nanofibers ; biopolymer ; polycaprolactone ; gelatine ; electrospinning Vědní obor RIV JP - Průmyslové procesy a zpracování Obor OECD Materials engineering Způsob publikování Open access Institucionální podpora BC-A - RVO:60077344 UT WOS 000723776900001 EID SCOPUS 85119292927 DOI 10.3390/polym13223870 Anotace 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. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2022 Elektronická adresa https://www.mdpi.com/2073-4360/13/22/3870
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