Design of Antimicrobial Membrane Based on Polymer Colloids/Multiwall Carbon Nanotubes Hybrid Material with Silver Nanoparticles

Abstract

The aim of this study was to obtain membranes with antimicrobial activity presenting a complex sandwich-type structure. The outer layers are comprised of poly(methyl methacrylate) membranes, whereas the inner active layer consists of a modified commercial membrane to achieve antimicrobial properties. This activity arises due to the presence of silver nanoparticles in a material with a hybrid composition deposited on a commercial membrane. This hybrid material consists of polymer colloids and multiwall carbon nanotubes used for both the stabilization of the active layer by the interconnections of the polymer particles and as active component. The filtration tests revealed a good stability of the materials and an increased hydrophilicity of the hybrid membranes. The antimicrobial properties have been evaluated using Staphylococcus aureus and Escherichia coli, and have been correlated with the content and migration rate of silver ions.

New polyurea MWCNTs nanocomposite films with enhanced mechanical properties

“…Figure shows the RAMAN spectra of both pristine and epoxy‐functionalized MWCNTs. This spectroscopy analysis revealed that the I D / I G ratio increased from 1.277 to 1.37, confirming the successful functionalization of the MWCNTs without damaging the carbon nanotube structure …”

“…This spectroscopy analysis revealed that the I D /I G ratio increased from 1.277 to 1.37, confirming the successful functionalization of the MWCNTs without damaging the carbon nanotube structure. [35][36][37] The degree of functionalization of the MWCNTs is very important; therefore, they have also employed TGA for the materials characterization. The weight loss in the case of the epoxyfunctionalized MWCNTs started at 140-150 8C and ended at approximately 370 8C and the maximum degradation temperature T max was registered around 278 8C (Figure 2).…”

San copolymer membranes with ion exchangers for Cu(II) removal from synthetic wastewater by electrodialysis

“…The highest obtained value (92°CA) was exactly on the edge of the hydrophilic and hydrophobic surfaces, which still offers a certain versatility of the membrane applications. This kind of versatility, next to the potential antibacterial effect of the copper ions trapped on the membrane surface could be the basis of reusing such membranes in biowaste separation (Rusen et al, 2014).…”

Electrochemical Deposition of Zinc Oxide on the Surface of Composite Membrane Polysulfone-Graphene-Polystyrene in the Presence of Water Soluble Polymers

“…Furthermore, incorporation of pristine carbon nanotubes (CNTs) or graphene oxide (GO) at certain concentrations into the polymer matrix proved to be an advantageous alternative to realize filtration membranes with improved hydrophilicity, thermal stability, and water flux permeability without damaging the mechanical properties of the hybrid membranes [5,[14][15][16].…”