Prof.dr.ir. J. van Turnhout

Prof.dr.ir. J. van Turnhout

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Room: 34.H-3-330

Profile

Career

Headed Group on Electrical Properties of Polymers, at Central Laboratory, TNO. Later, head of Dept. of Polymer Physics, Plastics and Rubber Institute, TNO.

Between 1989 to 2007 professor in Polymer Physics at TUD, where I set up research on active functional polymers, and initiated the structure-property analysis of novel polymers with TSD and dielectric spectroscopy. Now, professor em. in the Dept. MSE of 3mE.

Research interests

Electro/opto/piezo/pyro-active polymers, electrets (long term charge storage), thermally stimulated phenomena, dielectric relaxations, physical aging, visco-elastic phenomena, Kramers-Kronig conversion, modelling mixtures and (nano) composites.

Present activities

As guest of MSE, focus on the modelling of yielding in metals by the gliding of dislocations with a distribution in length and on coaching MSc and PhD-students. Work on two more books.

Education

I studied Applied Physics at the HTS (Dordrecht), got my Ir degree in Applied Physics of the TU-Delft, and my PhD degree (cum laude) from the Univ. of Leiden.

Achievements

Invented permanently charged polymers, electrets, for microphones, headsets (produced by Royal Philips) and high-efficiency air filters (produced by 3M as Filtrete) and devised a new method called TSD to analyse relaxations and charge trapping in dielectrics. We further developed: conducting polymers and  piezo-, pyro- and nonlinear optical active polymers. Authored over 100 papers and two books: Thermally Stimulated Discharge of Polymer Electrets and Thermally Stimulated Processes in Solids, published by Elsevier. Hold several patents.

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Room: 34.H-3-330