A5091418000- Additive Manufacturing and 3D Printing Technologies
- Natural Fiber Reinforced Composites
- biodegradable polymer synthesis and properties
- Health, Medicine and Society
- Healthcare Systems and Practices
- Mechanical Engineering and Vibrations Research
- Bamboo properties and applications
- Manufacturing Process and Optimization
- Polymer Foaming and Composites
- Innovations in Concrete and Construction Materials
- Mechanical Behavior of Composites
- 3D Printing in Biomedical Research
- Polysaccharides and Plant Cell Walls
- Fiber-reinforced polymer composites
- Polysaccharides Composition and Applications
- Advanced Materials and Mechanics
- Bone Tissue Engineering Materials
- Urban and Freight Transport Logistics
- Microplastics and Plastic Pollution
- Design Education and Practice
- Nanocomposite Films for Food Packaging
- Additive Manufacturing Materials and Processes
- Electrospun Nanofibers in Biomedical Applications
- Tree Root and Stability Studies
- Advanced Cellulose Research Studies
Scion
2014-2024
Museum of New Zealand Te Papa Tongarewa
2021-2023
Rotorua Hospital
2009-2019
Auckland University of Technology
2018
Institute of Physics
2005
Hebei Normal University
2003
Additive manufacturing or 3D printing has the potential to displace some of current techniques and is particularly attractive if local renewable waste resources can be used. In this study, rice husk wood powders were compounded in polylactic acid (PLA) by twin screw extrusion produce filaments for fused-deposition modelling printing. The biomasses characterized terms physical features (e.g. particle size, density) chemical compositions solid state nuclear magnetic resonance, ash content)....
Abstract Plant biomass plays an increasingly important role in the circular bioeconomy, replacing non-renewable fossil resources. Genetic engineering of this lignocellulosic could benefit biorefinery transformation chains by lowering economic and technological barriers to industrial processing. However, previous efforts have mostly targeted major constituents woody biomass: cellulose, hemicellulose lignin. Here we report wood structure through introduction callose, a polysaccharide novel...
The paper presents ways of utilising the additive manufacturing process 3D-printing using renewable biobased materials, with a focus on adapted packaging for sensitive components. This application provides an attractive scenario sustainable production and re- or upcycling waste material such as wood flour, rice husk miscanthus fibre. Packaging prototypes filigree structures made fragile materials is currently difficult, because standardized packages are often not suitable cost high. Within...
Fused deposition modelling is the most popular method of 3D printing with a variety polymers, but raw materials are commonly in filament form. Research has demonstrated ability to use pellets for this process, which easier produce than filaments. Apart from savings on pre-processing, approach also combines good attributes both injection moulding and referred as extrusion printing. Direct especially suited thermosensitive which, repeated or excessive heating may lead degeneration. Also,...
Fused deposition modeling (FDM) is based on extrusion printing and one of the most widely used addive manufacturing techniques. Though capable challenging its traditional counterpart, injection molding in specific cases, current application FDM limited due to fewer material options need have raw filament form often. Considering significant role that process projected play varying fields applications, research considers evaluate certain biopolymer alternatives pellet forms for...
This research presents a partial biodegradable polymeric blend aimed for large-scale fused deposition modeling (FDM). The literature reports blends with high contents of fossil fuel-based polymers (>20%) that make them unfriendly to the ecosystem. Furthermore, reported polymer systems neither present good mechanical strength nor have been investigated in vulnerable environments results biodegradation. research, as continuity previous work, stability against biodegradability prepared...
Impacts of Marine Plastic Debris (MPD) on marine ecosystems are among the most critical environmental concerns past three decades. Virgin plastic is often cheaper to manufacture than recycled plastics, increasing rates released into environment and thereby impacting ecosystem health functioning. Along with other effects, MPD can serve as a vector for hitchhikers, facilitating unwanted organisms’ transport subsequent spread. Consequently, there growing demand more eco-friendly replacements...
A biobased composite material with heat-triggered shape memory ability was successfully formulated for three-dimensional (3D) printing. It produced from cellulose nanocrystals and micro-powder particles within a bioderived thermally cured polyester matrix based on glycerol, citric acid, sebacic acid. The effect of curing duration the material's behavior quantified by using two thermo-mechanical approaches to measure recovery: (1) displacement in three-point bending (2) angular recovery beam...
The diversity of the plant biomass available on earth makes plants an exceptional resource for replacing fossil resources in green chemistry, bioenergy and biobased materials. For numerous applications, especially high-tech ones (building block molecules, high-power bioenergy, additive manufacturing materials), macrostructure assemblies often need to be first broken down into a fine powder. This can achieved by dry fractionation process combining comminution sorting steps. chemical physical...
Confocal microscopy and water diffusivity measurements were used to characterise the development of defects in biofibre-reinforced composite materials. Biofibres swelled more than matrix when specimen was immersed water, but associated distortion rarely caused defects. The biofibres shrank faster dried air, causing debonding at fibre-matrix interfaces microcracks within fibres. We started with coarse technical fibres from leaves harakeke (Phormium tenax), treated a portion 1% NaOH, pulped...
Binder-jet 3D printing responses of sea-shell powder based ceramic composites have been evaluated considering the material consolidation mechanisms and mechanical characterisations.Initial experimental trials are done manually, varying composition composite powders from 5% to 50% seashell rest plaster.Overall, plaster combinations worked well in terms achieving necessary green strengths within binder-jet process conditions.Scanning electron microscopy 3-point bending results indicated no...
Laser Brillouin scattering is applied to measure the sound velocity and anisotropic in high-quality single-domain tetragonal Ce:BaTiO3 single crystals at room temperature. The elastic piezoelectric constants are thus determined. Based on propagation equations these results, directional dependence of compressional shear modulus (010) (001) planes investigated. Some properties electromechanical coupling crystal discussed.
Acrylonitrile butadiene styrene (ABS) is a renowned commodity polymer for additive manufacturing, particularly fused deposition modelling (FDM). The recent large-scale applications of 3D-printed ABS require stable mechanical properties than ever needed. However, thermochemical scission bonds one the contemporary challenges affecting overall stability. In this regard, literature reports melt-blending with different polymers high thermal resistance. comparison effects on tensile strength...