KTH Royal Institute of Technology in Stockholm has grown to become one of Europe’s leading technical and engineering universities, as well as a key centre of intellectual talent and innovation. We are Sweden’s largest technical research and learning institution and home to students, researchers and faculty from around the world. Our research and education covers a wide area including natural sciences and all branches of engineering, as well as in architecture, industrial management, urban planning, history and philosophy.
The School of Chemical Science and Engineering includes the areas Chemistry, Chemical Engineering and Fibre and Polymer Technology. It encompasses both fundamental and applied Chemical sciences and seeks sustainable development through scientific excellence. Many research activities are interdisciplinary across the borders from Chemistry to Materials science, Environmental science, Biochemistry, Biology and Medicine. The School offers a Bachelor of Science in Engineering Chemistry, Degree Programs in Engineering Chemistry, Technical Preparatory Year and three international master programs: Chemical Engineering for Energy and the Environment, Macromolecular Materials and Molecular Science and Engineering. We also cooperate with the master programs Energy and Environment, Materials Design and Biotechnology.
The position will be in the polymeric materials group at the department of Fibre and Polymer Technology at KTH (www.kth.se/en/che/divisions/polymeric-materials). The work is performed in close collaboration with Uponor (www.uponor.se).
Uponor is a leading provider of plumbing and indoor climate solutions for residential and commercial building markets across Europe and North America. Uponor is also a prominent supplier of municipal infrastructure systems in northern Europe.
With over 60 years of experience in the development and production of plastic pipes, components and systems, Uponor pride themself on being able to create total solutions that take account of individual needs and help create a pleasant setting for living, work and leisure. In addition to being technologically advanced, Uponor’s solutions are sustainable and energy-efficient.
Uponor is listed on the Nasdaq OMX Helsinki stock exchange.
One of Uponors products are drinking water pipes made from peroxide cross-linked high density polyethylene (PE-Xa). Apart from peroxide also antioxidants are added to the pipe. The peroxide is reacting during the extrusion process resulting in a number of decomposition products that will migrate at various rates (depending on their structure) from the pipe walls into the drinking water.
Special processing methods are developed in order to eliminate these decomposition products or other low molecular weight substances. This is completely necessary in order to pass governmental approval requirements and to be able to supply a product of such required quality. Testing is normally performed by evaluating water quality by measuring total organic content (TOC), by tasting panels (Taste and odor) and by gas chromatography- mass spectrometry (GCMS). The requirements tend be more and more demanding for every year.
To understand and model the diffusion process of low molecular (undesired) substances in PE-Xa so that for instance the production can be optimized for each pipe dimension to minimize any loss.
Materials and methods
Material characterization and modelling will be performed at KTH. The modelling involves substance diffusion kinetics and solubilities in polymer matrices.
Pipe production facilities are available at Uponor, as well as equipment for TOC and GCMS. Also expertise within this field is available at Uponor.
This postdoctoral position is a full-time employed position for one year. The starting date is open for discussion, though ideally we would like the successful candidate to start as soon as possible.
Applicants should have a Ph.D. degree in a subject relevant for the research, such as polymer engineering and science, including modelling.
Trade union representatives
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Disclaimer: In case of discrepancy between the Swedish original and the English translation of the job announcement, the Swedish version takes precedence.Type of employment: Temporary position longer than 6 months