- Graphene research and applications
- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Graphene and Nanomaterials Applications
- Additive Manufacturing and 3D Printing Technologies
- Surfactants and Colloidal Systems
- Supercapacitor Materials and Fabrication
- Fiber-reinforced polymer composites
- Enhanced Oil Recovery Techniques
- Carbon Nanotubes in Composites
- Dielectric materials and actuators
- Energetic Materials and Combustion
- Natural Fiber Reinforced Composites
- Rheology and Fluid Dynamics Studies
- Nonlinear Optical Materials Research
- Polymer Nanocomposite Synthesis and Irradiation
- Advancements in Battery Materials
- Recycling and Waste Management Techniques
- Spectroscopy Techniques in Biomedical and Chemical Research
- Petroleum Processing and Analysis
- Protein Interaction Studies and Fluorescence Analysis
- biodegradable polymer synthesis and properties
- Mechanical Behavior of Composites
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Fluid Dynamics and Thin Films
University of Auckland
2014-2021
University of Waikato
2015
Illinois Institute of Technology
1976-1977
This article focuses on the reduction of graphene oxides using different reductants and conditions systematically varying chemical physical structure, surface topography chemistry film thickness reduced oxide (rGO) films, with a focus how these influence property most interest: electrical conductivity. The process restores to graphene-like improving conductivity while creating changes such as increased roughness, new functionality. Films smooth surfaces minimal thicknesses have been shown...
The book titled “Graphene-Based Nanotechnologies for Energy and Environmental Applications”, edited by Mohammad Jawaid, Akil Ahmad David Lokhat, focuses on recent developments in graphene-based materials, composites devices a variety of applications storage devices, supercapacitors, water treatment, ion-separation, photocatalysts antimicrobial applications. It is part the series Micro Nano Technologies published Elsevier. first editor book, Jawaid from Universiti Putra Malaysia, has...
In recent years, graphene and its derivatives have become prominent subject matter due to their fascinating combination of properties potential applications in a number application. While several fundamental studies been progressed, there is particular need understand how different are influenced terms electrical thermal conductivities by functional groups they end up with through manufacturing functionalisation methods. This article addresses the role present reduced oxides (rGO) concerning...
The demand for stretchable, soft and wearable multifunctional devices based on conductive polymer composites is rapidly growing because of their compelling applications, including physical physiological measurements the human body. This paper reports a simple cost-effective technique to fabricate electrically flexible films with graphite (GRP) flakes an elastomer, silicone rubber (SR). mechanical, thermal, electromechanical electrothermal characterisations were conducted. While dynamic...
This article focuses on the hybridization of thermoplastic polymer matrices with conducting polymers and graphene derivatives. Polypropylene (PP), polymethylmethacrylate (PMMA) polyoxymethylene (POM) were used as primary polypyrrole (PPY) polyaniline (PANI) secondary polymers. Highly conductive-reduced oxide (rGO) (G) have been reinforcements. A Taguchi analysis has performed for blends to find optimal combination respect electrical conductivity (σ) mechanical properties. Both properties...
The paper focuses on the investigation of 3D printing multi-functional composites using graphene nanoplatelets (GNP), polypyrrole (PPY) and linear low-density polyethylene (LLDPE). A holistic approach was performed characterization methods to assess properties printed compared with those compression molded neat LLDPE understand factors affecting their performance. It has been noted that have superior mechanical electrical than LLDPE, but slightly lower having high packing density fillers....
The purpose of this communication is to put forward some considerations and recommendations while handling nanomaterials, especially graphene its derivatives. A large sheet generally stable inert; thus, derivatives are not considered hazardous, but good laboratory practices should be taken seriously for the safe use such materials. This article provides insights about nanoscale important considerations.
Abstract This study focuses on the development of strain‐sensors utilizing biodegradable natural fabrics (cotton, flax, and wool) graphene nanoplatelets (GN) through novel coating techniques. A systematic improving electrical conductivity fiber to be used as effecting sensing stimuli was conducted by varying proportions graphene. To further enhance conductivity, GN hybridized with conducting polymers, such polypyrrole (PPy), polyaniline (PANI), carbon black (CB). The morphological,...
Abstract The viscous and elastic properties of fluid interfaces play an important role in the stability foams emulsions as well selection surfactants for tertiary oil recovery. These were determined aqueous solutions surfactant, polymer, polymer plus surfactant systems using a deep channel surface viscometer. rheology adsorbed film was represented terms two‐parameter Maxwell model. Depending on system investigated, films found to be either viscoelastic, purely viscous, neither nor elastic, or rigid.
Fabrication of electrically conductive yarns (glass, flax and polypropylene fibers) coated with graphene nanoparticles (GNP) were characterized for their mechanical properties compared electrical properties. The composites produced the use polymeric binders (epoxy resin thermoplastic starch) two different dip-coating methodologies developed to create coating layers. Technique-1 involved binder then GNP layer whereas Technique-2 had a mixture in predetermined ratio, which was on yarns....
This article focuses on the optimisation of electrical and mechanical properties hybrid blends polyoxymethylene (POM) as primary thermoplastic matrix, polypyrrole (PPY) secondary conducting polymer graphene (G) reinforcement. An initial Taguchi analysis was performed with a focus improving conductivity (σ) tensile strength. A mixture using 'simplex' statistical design applied to develop an experimental subset that identified optimal combination in weight-percentage. Both were improved by...
Abstract Electrically conductive yarns have been produced by fabricating graphene particles (both nanoplatelets and reduced oxide) on glass, flax, polypropylene using binding materials (epoxy resin thermoplastic starch solution) a dip coating process. Three different processes developed to identify an efficient method of in terms improving electrical conductivity. Morphological study has carried out understand the mechanism at interphase between binder particles, it found that Van der Waals...