Modified polyurethane nanofibers as antibacterial filters for air and water purification

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F17%3A00004348" target="_blank" >RIV/46747885:24620/17:00004348 - isvavai.cz</a>

Výsledek na webu

<a href="http://pubs.rsc.org/en/content/articlehtml/2017/RA/C7RA06317B" target="_blank" >http://pubs.rsc.org/en/content/articlehtml/2017/RA/C7RA06317B</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c7ra06317b" target="_blank" >10.1039/c7ra06317b</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modified polyurethane nanofibers as antibacterial filters for air and water purification

Popis výsledku v původním jazyce

In the present research, we aimed to produce polymer nanofibrous filters for antibacterial purification of air and water and prove their efficiency and stability under simulated filtration conditions. Polyurethane solutions were modified by microparticles (700 nm to 1 μm) and nanoparticles (≈50 nm) of copper oxide (CuO) in order to compare the influence of the dimensional characteristics of modifier on the properties of composite filters. Antimicrobial additives (used concentrations 5; 7; 9.5 and 12%) were introduced directly into the pre-electrospinning solutions and then were thoroughly intermingled. The rheological behaviour of such solutions was studied before the electrospinning process. Then composite layers were prepared by the industrial Nanospider technique. SED-EDX results confirmed a smooth and well-oriented structure and the presence of CuO for all of the modified samples. The antibacterial efficiency of the nanofibrous mats with micro- and nanoparticles was studied using the model microorganisms Escherichia coli and Staphylococcus gallinarum. The stability of particle fixation into the fiber structure was determined under the simulated conditions of water filtration. Moreover, a special device AMFIT-13 was designed and used to characterize the bacterial filtration efficiency of nanofibers for air purification. A very important result of this research is a proven fact that microparticles of CuO are a more suitable additive for the selected method of antibacterial modification of polyurethane filters than nanoparticles from technological and economic points of view.

Název v anglickém jazyce

Modified polyurethane nanofibers as antibacterial filters for air and water purification

Popis výsledku anglicky

In the present research, we aimed to produce polymer nanofibrous filters for antibacterial purification of air and water and prove their efficiency and stability under simulated filtration conditions. Polyurethane solutions were modified by microparticles (700 nm to 1 μm) and nanoparticles (≈50 nm) of copper oxide (CuO) in order to compare the influence of the dimensional characteristics of modifier on the properties of composite filters. Antimicrobial additives (used concentrations 5; 7; 9.5 and 12%) were introduced directly into the pre-electrospinning solutions and then were thoroughly intermingled. The rheological behaviour of such solutions was studied before the electrospinning process. Then composite layers were prepared by the industrial Nanospider technique. SED-EDX results confirmed a smooth and well-oriented structure and the presence of CuO for all of the modified samples. The antibacterial efficiency of the nanofibrous mats with micro- and nanoparticles was studied using the model microorganisms Escherichia coli and Staphylococcus gallinarum. The stability of particle fixation into the fiber structure was determined under the simulated conditions of water filtration. Moreover, a special device AMFIT-13 was designed and used to characterize the bacterial filtration efficiency of nanofibers for air purification. A very important result of this research is a proven fact that microparticles of CuO are a more suitable additive for the selected method of antibacterial modification of polyurethane filters than nanoparticles from technological and economic points of view.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

<a href="/cs/project/LO1201" target="_blank" >LO1201: ROZVOJ ÚSTAVU PRO NANOMATERIÁLY, POKROČILÉ TECHNOLOGIE A INOVACE TECHNICKÉ UNIVERZITY V LIBERCI</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

RSC Advances

ISSN

2046-2069

e-ISSN

—

Svazek periodika

7

Číslo periodika v rámci svazku

78

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

49177-49187

Kód UT WoS článku

000413893000002

EID výsledku v databázi Scopus

2-s2.0-85032453731