The cover photo describes the scheme of the twin screw extruder for the preparation of thermoplastic starch (TPS). As discussed by M. Paula Guarás, this screw extrusion process is very advantageous for the preparation of TPS films with improved mechanical and water vapor absorption properties in any industrial processing line for plastic packaging products.
PRAP-CVD: Up-scalable process for the deposition of PEDOT thin films
Bianca Rita Pistillo*, Kevin Menguelti, Didier Arl, Renauld Leturcq, Damien Lenoble
Material Research & Technology Department, Luxembourg Institute of Science and Technology, Institute, 41, rue du Brill, Belvaux, L-4422, Luxembourg
Adv. Mater. Lett., 2019, 10 (3), pp 201-205
DOI: 10.5185/amlett.2019.2186
Publication Date (Web): Dec 31, 2018
Copyright © 2019 VBRI Press
E-mail: biancarita.pistillo@list.lu
Plasma radicals assisted polymerization via CVD (PRAP-CVD) is emerging as an efficient alternative to conventional vapour based techniques to synthesise and deposit conjugated polymers. PRAP-CVD process is based on the concomitant but physically separated injection of low-energy oxidative radical initiators and vaporized monomer species into a reactor where temperature and pressure are finely controlled. Gas phase oxidative radicals are generated by a remote plasma chamber from a pure or diluted initiator. The low deposition temperature, below 100 °C, allows polymers to be directly synthesised on a wide range of substrates, including fabric, paper and plastic, without any thermal degradation and keeping a high degree of surface conformality. Additionally, the PRAP-CVD does not require post-deposition rinsing procedure which allows a wider range of application. PRAP-CVD PEDOT depositions have been carried out on different substrates with a transparency higher than 80% in the visible range.
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