Exjobbsförslag från företag

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Förslaget inkom 2003-02-19

New polymer foam materials and their applications

OBS! ANSÖKNINGSTIDEN FÖR DETTA EXJOBB HAR LÖPT UT.
This Master's thesis project (exjobb) is to be carried out within YKI's Forest Products Section. YKI, Ytkemiska Institutet AB (Institute for Surface Chemistry) is an internationally leading research centre in applied surface and colloid chemistry. Knowledge about surface chemical phenomena e,g, cleaning, adhesion and surface modification is of importance for process and product development in different areas. YKI therefore works with most industrial sectors including chemical producers, engineering industries, forest products, plastics, paint, packaging, pharmaceutical, biotechnology and food industries. Our industrial partners range from multinational companies to domestic small and medium-sized enterprises (SMEs). YKI has 80 member companies worldwide. YKI is located in a research-intensive area on the campus of the technical university (KTH) in Stockholm, close to Stockholm University and the medical university Karolinska Institutet. See www.surfchem.kth.se for further information.

In the past few years, new strategies of emulsion polymerisation have evolved, making possible the water-based synthesis of organic and inorganic foam materials with adjustable pore sizes. The combination of environmentally friendly production processes and controlled structure and function offer these solid foams a range of applications. One possibility is their use as a high-performance compressible filler material in light-weight paper grades, with their internal pore size optimised for maximum light scattering, and their surface chemistry tailored to the trapping of hydrophobic impurities and wood extractives.

The first stage of the project will focus on mastering the existing routes for synthesis of these solid foams, using common polymers such as polystyrene, and extending to examination of possibilities for novel functional polymer foams. The structural, optical, electrical, mechanical, and surface chemical properties of the materials produced will be characterised using a range of techniques in order to classify their potential applications, compared to other established materials such as aerogels.

The second stage of the project will then deal with implementation of these applications, especially with a view to incorporation of the solid foams into paper. This will involve the formation of hand sheets and evaluation of the paper/foam composite properties, namely brightness and opacity, compressibility, strength, surface roughness, absorption and printability. Other uses for these foams outside the paper area will also be addressed.

Praktisk information
Omfattning: 20 poäng. Start: snarast enligt överenskommelse. Lämplig bakgrund för dig som söker är kemi/kemiteknik eller motsvarande.

Intresserad? Kontakta snarast
Dr Andrew Fogden, YKI, tel. 08-790 99 49 / andrew.fogden@surfchem.kth.se

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