Doktorand - Ytmodifiering för kontroll av kolloidal interakti
Kungliga Tekniska Högskolan , KTH Kemivetenskap / Kemiingenjörsjobb / Stockholm
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hela Sverige Visa alla jobb hos Kungliga Tekniska Högskolan , KTH Kemivetenskap i Stockholm KTH svarar för en tredjedel av Sveriges kapacitet av teknisk forskning och ingenjörsutbildning på högskolenivå. Utbildningen och forskningen täcker ett brett område - från naturvetenskap till alla grenar inom tekniken samt arkitektur, industriell ekonomi och samhällsplanering. Totalt finns vid KTH 13 400 studenter på grundnivå och avancerad nivå och nästan 1900 forskarstuderande. KTH har 4900 anställda.
KTH svarar för en tredjedel av Sveriges kapacitet av teknisk forskning och ingenjörsutbildning på högskolenivå. Utbildningen och forskningen täcker ett brett område - från naturvetenskap till alla grenar inom tekniken samt arkitektur, industriell ekonomi och samhällsplanering. Totalt finns vid KTH 13 400 studenter på grundnivå och avancerad nivå och nästan 1900 forskarstuderande. KTH har 4900 anställda.
Publiceringsdatum2014-05-06ArbetsuppgifterWith the environmental awareness towards a sustainable society, great efforts are nowadays invested to replace conventional plastics and herefore decreasing the dependency of materials generated from fossilfuel. Modern nanofibre-reinforced biocomposites made from renewable materials will in the future most probably be made exclusively from aqueous dispersions containing both the matrix polymer and nanofibres for reinforcement. In order to fully utilize the excellent inherent properties of the nanofibres it is essential to distribute the nanofibres homogeneously throughout the formed structures and to avoid aggregation of the fibrils. In aqueous systems this is a demanding task since the particle stability will be determined both by the charge of the particles and the matrix polymer and the interaction between the polymer and the nanofibres.
The current WWSC position, funded by Knut and Alice Wallenberg Foundation, will be devoted to the stabilization of nanofibres in aqueous systems, mainly by the modification of the fibrils with polymer chains. Polymeric chains will be covalently grafted or electrostatically adsorbed from the surface of the fibrils and the stability of modified nanofibres will be investigated. The project will employ polymerization methods such as controlled radical polymerization and ring-opening polymerization to produce the polymers. Furthermore, coupling chemistries such as click-chemistry and EDC-coupling will be utilized. The influence of graft length, grafting density and polymeric architecture on the stability will also be investigated.
This project is dedicated towards the synthesis and grafting and or adsorption of various types of polymer chains onto cellulose nanofibres to improve the stability of nanofibres in aqueous suspensions.
The application should be marked with reference number, clearly specify the specific position being applied for, and must include the following:
1. CV including education and relevant academic/work experience
2. Official record of transcripts and copy of degree certificate
3. Cover letter (maximum 2 pages) with a short description of interest in the scientific studies and the specific research field
KvalifikationerM.Sc. degree in polymer science and engineering or similar areas. The project is synthetically intensive and includes synthesis of well-defined polymers and their structural characterization via traditional analytical techniques e.g. NMR, SEC, MALDI-TOF, DSC/TGA, FTIR, DLS etc. Documented experience of polymer synthesis via CRP, ROP, ROMP, click chemistry etc, will be regarded as advantageous when evaluating the applicant. Additional documentation on the modification of biofibers and surfaces will also be considered to the applicants favor. The candidate should be structured and creative, be able to work independently, meet agreed deadlines and critically analyze information.
Arbetstider och omfattningHeltid. Tidsbegränsad anställning
ErsättningEnligt avtal.
Så ansöker duSista dag att ansöka är 2014-05-18
Ange följande referens när du ansöker: K-2014-0268
Klicka på denna länk för att göra din ansökanKontaktMaria Salling, Academic Work, Rekryteringskonsult
maria.salling@academicwork.seFöretagKungliga Tekniska högskolan , KTH Kemivetenskap
AdressKungliga Tekniska högskolan , KTH Kemivetenskap
Brinellvägen 8
10044 Stockholm
Kontorsadress10044 Stockholm
Jobbnummer 1862902
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