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Name of scholarship/program

Liquefaction of Fat-Bound Particle Agglomerates



Important description
A fully funded 3 year PhD studentship (funded by Nestlé PTC York) is available on the understanding of how fat-bound powders can be transformed into a suspension state by mechanical treatment.
It is to be investigated how mechanical processing of fat-bound powders can be used for degassing and coating of the particle surfaces with fat so that the fat phase becomes the continuous phase with the particles being the dispersed phase.
Different technologies are to be compared, such as extruders and dynamic mixers (high-shear and low-shear, continuous and batch). The microstructural development over time is to be correlated with the mechanical energy input, the residence time and the shear and normal forces acting in the process. Power and mixing characteristics are to be established for the different processes. The influence of processing and material parameters on the microstructure is to be analysed. Microstructures will be characterised using optical and rheological methods.
The impact of moisture on rheological characteristics is to be assessed. Model materials are to be used such as crystalline particles mixed with fat. An investigation is to be conducted on the role of degassing on reducing moisture content and its subsequent impact on rheology.
The student will work within the Particle Products Research Group which has recently acquired a new state of the art food laboratory, equipped with cutting edge research equipment for product characterisation and development.


Eligibility and other criteria
This research project is one of a number of projects at this institution. It is in competition for funding with one or more of these projects. Usually the project which receives the best applicant will be awarded the funding. Applications for this project are welcome from suitably qualified candidates worldwide. Funding may only be available to a limited set of nationalities and you should read the full department and project details for further information.


Application deadline
*21 May 2013


Additional information, and important URL
Candidates should have or expect to gain a First Class or Upper Second Class Honours degree, or a Masters Degree, in Chemical Engineering, Material Science, Food Science/Engineering, Chemistry or related discipline.
Applications for this project are welcome from suitable qualified candidates worldwide. The award covers fees and a maintenance stipend allowance for 3 years, subject to satisfactory performance.


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