Graphene Oxide Reinforced Polycarbonate Nanocomposite Films with Antibacterial Properties

Abstract

The incorporation of carbonaceous nanofillers into polymers can result in significant materials with improved physicochemical properties and novel composite functionalities. In this study, we have fabricated antibacterial, lightweight, transparent, and flexible graphene oxide (GO) reinforced polycarbonate thin films by a facile and low-cost methodology. Solution blending is employed to get a homogeneous mixture of PC-GO composites at various loading of GO, and the thin films are prepared by dry-wet phase inversion technique. Thermal studies and micrographs of the films revealed the incorporation of GO in PC matrix. Microstructure of the thin films showed the homogeneous dispersion of GO at micro-and nanoscales; however, at higher loading of GO (0.7%), significant agglomeration is observed. More importantly, PC-GO composite films exhibited excellent antibacterial activities against E. coli and S. aureus, owing to the antibacterial nature of GO nanoparticles.

Manipulating selective dispersion of reduced graphene oxide in polycarbonate/nylon 66 based blend nanocomposites for improved thermo-mechanical properties

“…9(a) represents FESEM images of the fractured surface of blend nanocomposites. 58,59 Neat blend showed droplet morphology where the PC phase is dispersed in nylon phase. Some ber-like morphology can also be observed onto the fractured surface of the neat blend which may attribute to melt compounding under high shear pressure.…”

A thermomechanical study on selective dispersion and different loading of graphene oxide in polypropylene/polycarbonate blends

“…They have explained such exceptional IR absorption on the basis of thermal energy migration dynamics mechanism . In this work, hydrogen bonding interaction between PC and GO could have been decreased the stretching frequency of CO of PC but an increase in the wavenumber can be due to the stacking of PC chains on GO nanosheets . It is well known that any restriction on the vibration of bonds require higher energy to exert the vibrational deformation.…”

“…It is well known that any restriction on the vibration of bonds require higher energy to exert the vibrational deformation. Due to the better interaction between GO and PC, polymer chains wrapped over the GO nanosheets driven by the hydrogen bonding interaction of GO with PC and π‐π stacking Figure (b) between graphitic sheets and aromatic backbone of PC . This wrapping of polymer chains restricts the vibration of CO and hence increased the wavenumber probably through thermal energy migration dynamics mechanism .…”

Nanoparticle-Based Devices in the Control of Antibiotic Resistant Bacteria

“…In this way, NP-based antimicrobial coatings for such materials may also help to control AR bacteria, not only by building devices that would be used in close contact with the medical staff and patients, but also by serving as building blocks for critical points of a hospital's facilities. Consequently, both GrO reinforced polyurethane and polycarbonate (Mahendran et al, 2016) have been tested for potential antibacterial effects, finding good results on such ability and on their safety profiles (Mejias Carpio et al, 2012). Also, AgCl-TiO 2 nanocomposite was demonstrated to be an excellent matrix that released silver ions to the surroundings to inhibit biofilm formation (Naik and Kowshik, 2014).…”