Editors : Andrew J Hunt, Thomas M Attard
"Exploring the range and utility of high-pressure solvent systems across a variety of different chemical applications, this book brings together recent advances in supercritical technology and other pressurised-solvent systems. It provides an in-depth overview of the latest advances and developments and discusses the limitations and drawbacks that need to be addressed. Wherever possible, the greenness and economic viability of the different solvent systems is highlighted. This book is ideal for researchers and industrialists working in environmental science, green chemistry and biorefineries."
More information through following link : https://pubs.rsc.org/en/content/ebook/978-1-78262-880-4
RECYCLING OF POLYMER COMPOSITES BY MEANS OF A SUPERCRITICAL FLUID TREATMENT
The subject of this PhD is to study and develop a supercritical fluid process for the recycling of carbon reinforced plastic composite, both resins and fibers. Use of composite materials is increasing in a wide range of applications : industrials, sporting, automotive, aeronautical, marine…but the lack of recycling for those non biodegradable materials is an environmental burden. Since 20 years several treatments have been developed for composites wastes, mechanical, thermal processes like pyrolysis and thermochemical like solvolysis. This process is able to breakdown the composite polymer matrix and hence allow the recovery of the fibers. Supercritical fluids are used due to their high diffusivity in porous materials combined to their chemical reactivity. The objective of this work is to define the necessary process conditions for deconstruction of composite resins of carbon fibers reinforced plastic composites. The aim is to recycle the fibers and also to allow a further chemical valorization of resins decomposition products. This work include a detailed analysis of the organic molecules produced and the development of a chemical mechanism for this depolymerisation. Mechanical properties of fibers after treatment will be determined to validate the recycling interest. This work will provide finally a first technico-economical evaluation of the proposed process.
Place : Laboratoire Thermo-conversion des bioressources - CEA Grenoble / LITEN, 17 rue des martyrs 38054 Grenoble Cedex FRANCE
Dates : october 2018- september 2021
Candidature should be sent in april 2018.
Anne Roubaud : anne.roubaud(at)cea.fr,