Electronic and Optical Properties of Doped Titanium Dioxide. Titanium dioxide, is widely used as a white pigment, owing to its high refractive index, second, only after diamond. Yellowing of rutile pigment particles, observed on prolonged exposure to sunlight, is a serious problem that pigment manufacturers would like to overcome. It is proposed that aluminium-doping of rutile limits this discolouration by altering the electronic structure of the rutile particles. This project seeks to identify ....Electronic and Optical Properties of Doped Titanium Dioxide. Titanium dioxide, is widely used as a white pigment, owing to its high refractive index, second, only after diamond. Yellowing of rutile pigment particles, observed on prolonged exposure to sunlight, is a serious problem that pigment manufacturers would like to overcome. It is proposed that aluminium-doping of rutile limits this discolouration by altering the electronic structure of the rutile particles. This project seeks to identify the specific electronic cause of the yellowing process, the nature of the Al defect,it's effect on the electronic structure of rutile, and the electronic perturbations that may occur when other dopants are used.Read moreRead less
Friction and capillary forces. Reducing friction forces is important for improving the performance of moving components in devices, and also useful for relieving people from pains at joints. In ambient conditions, confined liquids have a great influence on friction forces because an attractive force is induced by capillary condensation and adsorption between the surfaces. The correlation between capillary and friction forces will be clarified by force measurements with newly developed surface fo ....Friction and capillary forces. Reducing friction forces is important for improving the performance of moving components in devices, and also useful for relieving people from pains at joints. In ambient conditions, confined liquids have a great influence on friction forces because an attractive force is induced by capillary condensation and adsorption between the surfaces. The correlation between capillary and friction forces will be clarified by force measurements with newly developed surface force apparatuses in various conditions. Theoretical interpretation of influences of molecular layered liquids between the sliding surfaces on frictional behaviour will be also given based on thermodynamics.Read moreRead less
SYNCHROTRON MICROPROBE METALLURGICAL CASE STUDIES. The micro-focus capabilities of synchrotron techniques (XRF, XRD, XAS) will enable the high resolution spatial correlations required to advance the understanding of the three systems to be studied:
- Activation for flotation of sphalerite with varying iron contents;
- Arsenic leaching as a function of local structure, phase and mineral assemblage;
- Optimisation of ferrous alloy microstructure on cryogenic treatment.
These case studies have ....SYNCHROTRON MICROPROBE METALLURGICAL CASE STUDIES. The micro-focus capabilities of synchrotron techniques (XRF, XRD, XAS) will enable the high resolution spatial correlations required to advance the understanding of the three systems to be studied:
- Activation for flotation of sphalerite with varying iron contents;
- Arsenic leaching as a function of local structure, phase and mineral assemblage;
- Optimisation of ferrous alloy microstructure on cryogenic treatment.
These case studies have been chosen to specifically target the minerals processing and manufacturing industrial sectors and will be used to increase industrial awareness of the potentials of synchrotron techniques prior to the commissioning of the Australian Synchrotron in 2007.
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Optimisation of pigment coating surface treatments. Control and optimisation of surface coatings in pigment processing will lead to improved production efficiency and quality. In pigment processing, technology developed in this project may not only save millions of dollars in increased production efficiency but also lead to improved pigment optical performance in pigment applications such as paints, plastics and pharmaceuticals.
NEUTRALISING MINERAL REACTIONS IN ACID MINE DRAINAGE CONTROL. The project addresses the serious environmental problem of acid and toxic element release from iron sulfides in waste rock dumps and tailings storage in the mining industry. Long-term neutralising capacity, currently not tested in laboratory assessments, is available from the reaction of some silicate and aluminosilicate minerals. This potential has not been systematically tested or modelled. The research project aims to understand th ....NEUTRALISING MINERAL REACTIONS IN ACID MINE DRAINAGE CONTROL. The project addresses the serious environmental problem of acid and toxic element release from iron sulfides in waste rock dumps and tailings storage in the mining industry. Long-term neutralising capacity, currently not tested in laboratory assessments, is available from the reaction of some silicate and aluminosilicate minerals. This potential has not been systematically tested or modelled. The research project aims to understand the relative mechanisms and rates for long-term alleviation of acid production with mineral layered and blended combinations. Improved understanding will provide methodology for assessment and control of acid mine drainage.Read moreRead less
Physico-chemical and Biopharmaceutical Investigations of Novel Drug Delivery Systems for Oral Administration of Lipophilic Drugs. The new platform technology for carrying lipophilic molecules will be applicable to many molecules currently under development by Australian Industry and will inspire novel encapsulation approaches to new and existing drugs as well as functional foods and nutraceuticals. Improved oral bioavailability of anticancer drugs will improve the quality of life of patients, re ....Physico-chemical and Biopharmaceutical Investigations of Novel Drug Delivery Systems for Oral Administration of Lipophilic Drugs. The new platform technology for carrying lipophilic molecules will be applicable to many molecules currently under development by Australian Industry and will inspire novel encapsulation approaches to new and existing drugs as well as functional foods and nutraceuticals. Improved oral bioavailability of anticancer drugs will improve the quality of life of patients, reduce health care costs and provide broader benefits to the community. The Australian biotechnology/pharmaceutical industries can share in a greater proportion of the US$50 billion market for specialised drug delivery, which is increasing by 20% annually. Australia's scientific competitiveness will be strengthened in the fields of nano-encapsulation and colloidal delivery.Read moreRead less
STABILISATION OF TITANIA PIGMENTS FOR IMPROVED WATER-BASED PAINT APPLICATIONS. This project aims to improve the stability and optical properties of titania pigments in water-based paints. Tailored dispersing agents will be used to stabilise pigments in paints in both the wet and dry state. Enhanced understanding of the dispersing agents interaction with the titania pigment surface and the subsequent stability of the pigment in dry paint films will allow advances in water-based paint stability. T ....STABILISATION OF TITANIA PIGMENTS FOR IMPROVED WATER-BASED PAINT APPLICATIONS. This project aims to improve the stability and optical properties of titania pigments in water-based paints. Tailored dispersing agents will be used to stabilise pigments in paints in both the wet and dry state. Enhanced understanding of the dispersing agents interaction with the titania pigment surface and the subsequent stability of the pigment in dry paint films will allow advances in water-based paint stability. This understanding facilitates continued movement away from solvent-based paints required by environmental and health legislation. The potential growth in market share for the Australian pigment industry is in excess of $50M pa.Read moreRead less
Stabilisation of Titania Pigment Slurries During Processing. This project aims to improve the stabilisation properties of titania pigment slurries during production. Current polyphosphate dispersants used by Tiwest are unstable under processing conditions. Tailored, robust dispersing reagents will therefore be investigated in order to provide improved stabilisation of pigments during processing. Enhanced understanding of the dispersing reagents interaction with the titania pigment surface and th ....Stabilisation of Titania Pigment Slurries During Processing. This project aims to improve the stabilisation properties of titania pigment slurries during production. Current polyphosphate dispersants used by Tiwest are unstable under processing conditions. Tailored, robust dispersing reagents will therefore be investigated in order to provide improved stabilisation of pigments during processing. Enhanced understanding of the dispersing reagents interaction with the titania pigment surface and the subsequent stability of the pigment will allow advances in processing and consequently improved final products. The potential growth in market share, by improved product performance, is in excess of $50M pa.Read moreRead less
A Physicochemical Approach for Optimizing Drug Delivery from BioSilicon. By applying modern techniques and a multidisciplinary approach, this research will develop an understanding of drug loading of BioSiliconTM at a molecular level. This novel class of nano-structured biomaterial has exciting potential for developing a range of controllable drug delivery systems. Existing medical applications of BioSilicon deliver only small molecules for very specialised uses. Current research has not focused ....A Physicochemical Approach for Optimizing Drug Delivery from BioSilicon. By applying modern techniques and a multidisciplinary approach, this research will develop an understanding of drug loading of BioSiliconTM at a molecular level. This novel class of nano-structured biomaterial has exciting potential for developing a range of controllable drug delivery systems. Existing medical applications of BioSilicon deliver only small molecules for very specialised uses. Current research has not focused on understanding the pore structure and how it can be adapted for special applications. Our research will create new drug delivery systems with many innovative applications in medical, veterinary and bio-diagnostics fields. The medical and socio-economic impacts will be internationally significant.Read moreRead less
Development of Dry Coated Pigment Particles: Durability and Dispersion. Tiwest is the only business in the world that mines, separates, refines and manufactures titanium dioxide products in one region. Tiwest has a major impact on the Western Australian economy with more than 700 full time and contract jobs, export earnings of $400M (in 2004) and regular incomes for an estimated 500 businesses. The current wet pigment particle coating process, to ensure ease of handling and longevity, is a major ....Development of Dry Coated Pigment Particles: Durability and Dispersion. Tiwest is the only business in the world that mines, separates, refines and manufactures titanium dioxide products in one region. Tiwest has a major impact on the Western Australian economy with more than 700 full time and contract jobs, export earnings of $400M (in 2004) and regular incomes for an estimated 500 businesses. The current wet pigment particle coating process, to ensure ease of handling and longevity, is a major cost. An optimised pigment dry-coating process would ensure Tiwest's competitiveness through reduced processing costs and improved performance. This development has the potential to increase Tiwest's profitability by 10%.Read moreRead less