Microwave-assisted poly(glycidyl methacrylate)-functionalized multiwall carbon nanotubes with a ‘tendrillar’ nanofibrous polyaniline wrapping and their interaction at bio-interface

Nanocomposites of bio-based hyperbranched polyurethane/funtionalized MWCNT as non-immunogenic, osteoconductive, biodegradable and biocompatible scaffolds in bone tissue engineering

“…The XRD pattern of f-MWCNTs showed their characteristic peaks at 2q ¼ 26.2 and 43.1 which is assigned to the (002) and (100) planes of carbon. 30 The XRD diffractogram of pristine polyurethane (HBPU) showed the characteristic peaks at 2q ¼ 21.2 and 23.4 owing to the lattice planes corresponding to (110) and (200) of PCL crystal, the positions of which remained unchanged in the XRD diffractogram of the NC. However, higher intensity of the peaks in the NC corresponding to the PCL crystal is due to the nucleating effect of f-MWCNTs as supported by many reports.…”

Bio-based hyperbranched poly(ester amide)–MWCNT nanocomposites: multimodalities at the biointerface

“…The functionalization of MWCNTs via covalent and non-covalent approaches is an apt strategy to address the practical challenges of the chemical inertness of the graphitic network, poor dispersion, interfacial bonding with others, and so on. 7 The microwave (MW) assisted functionalization of MWCNTs, covalently with poly(glycidyl methacrylate) (PGMA) and non-covalently with PAni nanofibers in a single pot, proved to be an efficient technique amongst all others, particularly in the context of green chemistry. 7 Thus, in the present study, MW-assisted PGMA and PAni nanofiber functionalized MWCNTs ( f-MWCNT) will be employed as efficient antibacterial materials.…”

“…7 The microwave (MW) assisted functionalization of MWCNTs, covalently with poly(glycidyl methacrylate) (PGMA) and non-covalently with PAni nanofibers in a single pot, proved to be an efficient technique amongst all others, particularly in the context of green chemistry. 7 Thus, in the present study, MW-assisted PGMA and PAni nanofiber functionalized MWCNTs ( f-MWCNT) will be employed as efficient antibacterial materials. The effects of functionalization and synergism of MWCNTs and PAni nanofibers as the single nanohybrid in the antibacterial efficacy against a spectrum of bacterial species will be delved into.…”

Antibacterial Nanocomposites Based on Thermosetting Polymers Derived from Vegetable Oils and Metal Oxide Nanoparticles

“…In contrast, a higher bactericide action was found for similar nanocomposites reinforced with Fe 3 O 4 –MWCNT nanohybrids (NNC in Figure 14 [49]), which showed an inhibition zone of 22 mm against K. pneumoniae , and close to 20 mm for S. aureus ( nw halo values of 0.39 and 0.4, respectively), likely arising from the synergistic effect of the NPs and the MWCNTs on the biocide effect. The antibacterial activity of MWCNTs has been ascribed to several mechanisms [75]: disruption of the membrane integrity by strong electrostatic forces between bacterial outer surface and MWCNTs, leading to oxidation of the membrane; ROS generation that induces destruction of the bacterial plasmid DNA; impurity components (i.e., metallic nanoparticles, catalysts, suspension) that are introduced into the MWCNT structure during the synthesis process; bactericidal oxidative stress. Furthermore, the toxicity of MWCNTs is highly influenced by several factors such as diameter, length, residual catalysts, electronic structure, surface functional groups, and surface chemistry [76].…”