Antibacterial LDPE Nanocomposites Based on Zinc Oxide Nanoparticles/Vermiculite Nanofiller

Barabaszová, Karla Čech; Holešová, Sylva; Hundáková, Marianna; Pazdziora, Erich; Ritz, Michal

doi:10.1007/s10904-017-0546-4

Cited by 17 publications

(9 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The XRD pattern of sample ZnO/V shows reflections with interlayer distance values of d = 1.224 nm, 1.135 nm, and 1.001 nm (Figure 2a and Figure 3a). The interlayer distance d = 1.224 nm signifies that ZnO nanoparticles can be incorporated into the vermiculite interlayer [23,24]. The d = 1.001 nm belongs to the dehydrated phase of the vermiculite structure and d = 1.135 nm indicates a different hydration state with a different amount of water molecules.…”

Section: Resultsmentioning

confidence: 99%

“…The IR spectrum of ZnO/V (Figure 4) shows bands at 3698 and 3439 cm −1 in the OH stretching region attributed to structural OH groups of V, and adsorbed water there to OH bending vibration at 1631 cm −1 also characterizes adsorbed water. The intensive band at 1002 cm −1 is assigned to Si–O stretching vibration, together with Si–O bending vibration at 453 cm −1 , which overlaps the Zn–O band that occurs in a similar position [24,28].…”

Section: Resultsmentioning

confidence: 99%

“…The bands occurring at region 1604–1416 cm −1 originate from N–H bending vibration of secondary amine and imine groups and further from the stretching C–C vibrations of aromatic rings. Finally, bands at 824 cm −1 belong to the C–H out-of-plane deformation rocking vibration of methylene groups [24,29].…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Ultrasound on Zinc Oxide/Vermiculite/Chlorhexidine Nanocomposite Preparation and Their Antibacterial Activity

et al. 2019

Self Cite

View full text Add to dashboard Cite

Microbial infection and biofilm formation are both problems associated with medical implants and devices. In recent years, hybrid organic-inorganic nanocomposites based on clay minerals have attracted significant attention due to their application potential in the field of antimicrobial materials. Organic drug/metal oxide hybrids exhibit improved antimicrobial activity, and intercalating the above materials into the interlayer of clay endows a long-term and controlled-release behavior. Since antimicrobial activity is strongly related to the structure of the material, ultrasonic treatment appears to be a suitable method for the synthesis of these materials as it can well control particle size distribution and morphology. This study aims to prepare novel, structurally stable, and highly antimicrobial nanocomposites based on zinc oxide/vermiculite/chlorhexidine. The influence of ultrasonic treatment at different time intervals and under different intercalation conditions (ultrasonic action in a breaker or in a Roset’s vessel) on the structure, morphology, and particle size of prepared hybrid nanocomposite materials was evaluated by the following methods: scanning electron microscopy, X-ray diffraction, energy dispersive X-ray fluorescence spectroscopy, carbon phase analysis, Fourier transforms infrared spectroscopy, specific surface area measurement, particle size analysis, and Zeta potential analysis. Particle size analyses confirmed that the ultrasonic method contributes to the reduction of particle size, and to their homogenization/arrangement. Further, X-ray diffraction analysis confirmed that ultrasound intercalation in a beaker helps to more efficiently intercalate chlorhexidine dihydrochloride (CH) into the vermiculite interlayer space, while a Roset’s vessel contributed to the attachment of the CH molecules to the vermiculite surface. The antibacterial activity of hybrid nanocomposite materials was investigated on Gram negative (Escherichia coli, Pseudomonas aeruginosa) and Gram positive (Staphylococcus aureus, Enterococcus faecalis) bacterial strains by finding the minimum inhibitory concentration. All hybrid nanocomposite materials prepared by ultrasound methods showed high antimicrobial activity after 30 min, with a long-lasting effect and without being affected by the concentration of the antibacterial components zinc oxide (ZnO) and CH. The benefits of the samples prepared by ultrasonic methods are the rapid onset of an antimicrobial effect and its long-term duration.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Ultrasound on Zinc Oxide/Vermiculite/Chlorhexidine Nanocomposite Preparation and Their Antibacterial Activity

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Other factors that influence the antibacterial effect are the morphology and surface characteristics of the particle, such as hydrophilicity or roughness. 3,6 Polymeric nanocomposites with antimicrobial fillers have emerged as new alternatives for antibacterial agents, mainly because they are non-volatile and chemically stable materials. They can help avoid the contamination of food, water, and industrial equipment that may be contaminated by microorganisms.…”

Section: Introductionmentioning

confidence: 99%

“…These polymers can be combined with bioactive nanoparticles to create biocompatible nanocomposites (meaning non-toxic towards humans) that find applications in medicine as syringes, catheters, pharmaceutical bottles, bags, health foils, or nonwovens. 6 Antimicrobial agents incorporated into a polymer limit or prevent microbial growth, which could have applications in packaging to extend shelf life of packaged food in the form of films, containers, or utensils. 7,8 Furthermore, polymeric nanocomposites with ZnO as the filler have been prepared with various polymers, [9][10][11] by different methods, targeting several properties.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial High-Density Polyethylene (HDPE)/ZnO Nanocomposites Obtained by in situ Polymerization

Pavoski¹,

Kalikoski²,

Souza³

et al. 2020

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Nanostructured zinc oxide (ZnO) prepared by combustion in solution was used to obtain nanocomposites. The ZnO particles were characterized by Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), and scanning electron microscopy (SEM), showing crystallite size of 32 nm and a superficial area of 32.6 m 2 g -1 . Nanocomposites with 1, 3, and 5 wt.% of ZnO in the polymeric matrix were obtained using the in situ polymerization of ethylene with catalytic activities between 1500-1700 kg (mol Zr h P E ) -1 . The high-density polyethylene nanocomposites (PEZnO) were characterized by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), SEM, and transmission electron microscopy (TEM). The nanocomposites with 1 wt.% ZnO gave excellent mechanical properties, and all were active against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria.

show abstract

Decorated Clays for Polymer Nanocomposites

Martynková,

Barabaszová,

Hundáková

et al. 2024

Chemical Physics of Polymer Nanocomposites

View full text Add to dashboard Cite

Antibacterial LDPE Nanocomposites Based on Zinc Oxide Nanoparticles/Vermiculite Nanofiller

Cited by 17 publications

References 33 publications

Effects of Ultrasound on Zinc Oxide/Vermiculite/Chlorhexidine Nanocomposite Preparation and Their Antibacterial Activity

Effects of Ultrasound on Zinc Oxide/Vermiculite/Chlorhexidine Nanocomposite Preparation and Their Antibacterial Activity

Antimicrobial High-Density Polyethylene (HDPE)/ZnO Nanocomposites Obtained by in situ Polymerization

Decorated Clays for Polymer Nanocomposites

Contact Info

Product

Resources

About