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Thursday, 19 September 2019
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Raw materials & technologies, Raw materials, Coatings binders

Cellulose functionalised for printed electronics

Monday, 2 January 2012

Doctoral thesis at the University of Grenoble deals with the use of cellulose for the elaboration of photoluminescent or conductive materials.

Part of the work highlighted the printability of an aqueous dispersion of semiconducting photoluminescent polymer nanoparticles

Source: Franc Podgarsek - Fotolia.com
Part of the work highlighted the printability of an aqueous dispersion of semiconducting photoluminescent polymer nanoparticles Source: Franc Podg...

Olivier Pras defended his University of Grenoble doctoral thesis at Grenoble INP-Pagora, where he presented the results on his work regarding the use of cellulose for the elaboration of photoluminescent or conductive materials. The context of this project is the cellulosic material functionalisation in the printed electronic domain. The first part of the thesis highlighted the printability of an aqueous dispersion of semiconducting photoluminescent polymer nanoparticles. The influence of the size and the composition of the particles on the emission colour were studied. Security paper is one of the main potential applications of these particles. The second part dealed with the use of cellulose microfibrills and copper microparticles for the elaboration of conductive composite films. The films were self-supporting thanks to the high mechanical properties of the microfibrills. A study on the effect of calendaring pressure and temperature on electric conductivity was carried out, demonstrating that the composite film conductivity can be increased from the 10 S/m of the pristine film up to 70,000 S/m.

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