PhD Student - Powder Formation
SP Sveriges Tekniska Forskningsinstitut / Försäljarjobb / Stockholm
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hela Sverige YKI is a partner in the EU-funded project PowTech ITN, which is coordinated by SIK Swedish institute for food and biotechnology. To this project we need a PhD Student in powder formation.
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PhD Student - Powder Formation
The assignment is planned to start in September 2011. Due to project conditions, the position is only open for non-Swedish citizens. You should also not have lived in Sweden for more than twelve months in the last three years.
PowTech trains young researcher
PowTech is an Initial Training Network (ITN) aiming to integrate intersectoral and multidisciplinary research in particle and powder technology into the training of 15 highly skilled young researchers, to strengthen the competitiveness of food and pharmaceutical industry and to strengthen the European Research Area. The people and the knowledge in powder technology to be developed in the PowTech network will contribute to the development of innovative products and effective powder processing in Europe by solving industrial problems and reducing knowledge barriers.
The candidate will perform doctoral research sharing time between main host (YKI) and a secondment location (mainly GEA Niro, Copenhagen). During this period, the candidate will also have the opportunity to attend several training courses that will be held within the PowTech Graduate School. Find more information on
www.sik.se/powtechProject description
Through our previous research on spray drying and particle formation in water-based systems, we have learnt how surface active components tend to dominate the surface composition of the particles, how the drying conditions and formulation influence particle morphology (wrinkled/smooth, hollow, doughnut, dense). It has been seen that the way the droplets dry out and develop a certain morphology following the atomisation depends on certain liquid properties. Most well-known is the influence of the viscosity that often can lead to formation of filaments instead of particles. Other properties that may have an influence on e.g. ballooning, formation of doughnuts etc. are however not always well understood. In specific cases it has been demonstrated that the particle formation during spray drying can be simulated in the DryneticsTM with reasonable accuracy and a simulation of how changes in surface tension, viscosity etc. will influence the particle shape should therefore be possible. We now want to expand our understanding of the particle formation on a fundamental level, and link this to aspects such as formulation, properties of the liquid feed, and processing to the particle morphology.
The objective of the project is to investigate how particles and their shapes are formed in spray drying on a fundamental level. In particular the relation between formulation and liquid properties, process conditions and particle morphology will be studied and rationalized. Surface rheology and surface tension of the formulations will be linked to the particle morphology. The correspondence between the single particle drying that can be done using GEA Niro's DryneticsTM and powder particles produced in a spray dryer, where the kinetics are different, will be studied with particular emphasis on particle morphology.
The instrumentation that will be used includes the DryneticsTM, where data on droplet size, morphology, temperature are collected, and lab-scale and pilot-scale spray-dryers. For liquid characterisation, instruments such as surface tensiometers can be use
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Publiceringsdatum2011-07-05Arbetstider och omfattningHeltidsanställd
ErsättningEnligt Överenskommelse
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KontaktFöretagSP Sveriges Tekniska Forskningsinstitut
AdressSP Sveriges Tekniska Forskningsinstitut
Box 857
50515 Borås
Jobbnummer 979212
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