Division de Chimie Industrielle de la Société Chimique de France

Lancement du programme CMA Chimie Verte le 3 décembre à Chambéry. A suivre en direct sur : https://lnkd.in/dpinDs_t

Pour quelques notions de base dans le chiffrage d’unités industrielles…

La mousse bioplastique d'Eastman réussit les tests Une étude révèle que la mousse compostable à base de cellulose commercialisée qui remplace les emballages en polystyrène se dégrade quatre fois plus vite dans un environnement marin que le papier. https://lnkd.in/eUM-8pVM L’étude publiée dans  ACS Sustainable Chemistry & Engineering a conclu que les mousses biodégradables à base de diacétate de cellulose (CDA) d’Aventa sont commercialement utiles et ne persisteront pas dans les océans sous forme de pollution plastique. Il convient de noter que les mousses CDA ne se limitent pas à la recherche en laboratoire : les applications d'emballage Aventa sont disponibles via la marque Cryovac de SEE. « Ces matériaux sont déjà utilisés dans des applications commerciales, telles que les plateaux à protéines, et leur adoption continue de croître », révèle Jeff Carbeck, vice-président d'Eastman, innovation d'entreprise et technologie des solutions de soins.

Le CNRS consulte les Français à propos de leurs attentes envers la science https://lnkd.in/eB9MHbc3 À partir du 28 novembre et jusqu’au 31 janvier 2025, le CNRS invite le public à participer à une grande consultation nationale en partenariat avec Make.org. Cette initiative inédite vise à recueillir les attentes des Français en matière de sciences et à explorer les enjeux de notre époque. Le CNRS lance pour la première fois une consultation citoyenne visant à impliquer activement les Français et Françaises dans la réflexion sur le rôle des sciences dans la société. À travers la question centrale « Comment les sciences peuvent-elles nous aider à construire le monde de demain ? », le CNRS souhaite offrir aux citoyens et citoyennes l’opportunité de s’exprimer sur les sujets scientifiques qui les préoccupent le plus

Synthèse ultra-rapide de polymères à la fois biosourcés et dégradables https://lnkd.in/e3_Z-uj9 https://lnkd.in/e_A8DyQD Des scientifiques du CNRS proposent une alternative aux plastiques comme les polyacrylates, polymères conventionnels issus des ressources fossiles notamment utilisés dans les cosmétiques. Ils ont développé une méthode de synthèse ultra rapide à partir de monomères issus du glucose ou de la lignine menant à des polymères, appelés polymuconates, dégradables dans des conditions douces. Des résultats qui font l’objet d’un article dans la revue Angewandte Chemie International Edition.

Can biodegradable polymers make microplastics? https://lnkd.in/gFtYy-g2 The more people hear or read about microplastics turning up in air, drinking water, placentas, and brains, the more they want solutions. “It becomes very personal,” says Shannon Pinc, senior circular economy manager at NatureWorks, a Minnesota-based company that makes polylactic acid (PLA), one of the most common compostable plastics. NatureWorks and other makers of biodegradable plastic are putting forward their products as one of those solutions. But even biodegradable plastics shed microplastics, though they won’t persist indefinitely. They will continue to break down and eventually become food for microbes. While some experts emphasize that this is an unambiguous improvement on conventional plastics, which will stick around for hundreds of years, others stress that the degree of improvement depends enormously on what these polymers are used for and where they wind up at the end of their lives

Chemical Recycling is Essential for Plastics Circularity, but Faces Challenges https://lnkd.in/emstFxsg Environmental imperatives drive the development of technologies for the chemical recycling of plastic waste, but significant hurdles – including economic viability, collection logistics and feedstock complexity – need to be addressed for chemical recycling to have a larger impact Plastic waste continues to be a major global environmental issue. While mechanical recycling, where plastic waste is ground up and remelted, remains the most prominent form of plastics recycling, its limitations (material degradation, contamination and performance) prevent it from enabling real plastics circularity. The field of chemical recycling of plastics, which aims to break down polymers into starting materials that are chemically equivalent to petroleum-derived feedstock, is a fast-evolving area that is critical for achieving true plastics circularity

Chemical recycling of plastics: is industrial maturity within reach? https://lnkd.in/ePPRDGyW Executive Summary Market overview 2030-2040 Trends Focus on initial projects In 2022, the EU generated 33.2 million tonnes (Mt) of post-consumer plastic waste, of which only 11.3 Mt (29%) have been recycled. To enhance plastic recycling rates, the EU has established a new regulatory framework. This includes a target of 55% of all packaging to be recycled by 2030 (EU Directive 2018/852) and a mandate for manufacturers to incorporate between 50 to 65% recycled raw materials (RRM) in new packaging by 2040 (provisional PPWR, 2024). Additionally, forthcoming regulations are expected to facilitate the certification of chemically recycled polymers through the recognition of the mass-balance approach. The study identified more than 51 projects currently operational or announced, representing a combined capacity of ~0.8 Mt/year. Most of these projects (62%) utilise pyrolysis technology, designed to process blended polyolefins resins (PE, PP, and PS/EPS). The industry has experienced a slowdown in new project announcements since 2022, primarily due to heightened financial and regulatory risks and increased competition from energy recovery sectors (SRF and incineration), particularly following the energy crisis in 2022. Key players in this sector, notably refiners and petrochemical companies, are showing a strong interest in chemical recycling to bolster their supply chains. Meanwhile, manufacturers, under regulatory pressure, are forming partnerships to secure volume and drive demand for chemically recycled resins. Ultimately, chemical recycling is expected to target polyolefin resins and PET (excluding bottles) impacted by the new packaging regulations and is projected to provide between 1.5 and 6.5 Mt of RRM by 2030 and 2040, respectively. This anticipated production will necessitate the establishment of new chemical recycling facilities categorised into two main processes: pyrolysis and/or gasification and solvolysis and/or enzymolysis. This cumulative capacity is estimated to reach ~2.5 Mt by 2030, scaling up to ~9 Mt by 2040. This would see chemical recycling achieve a 15 to 40% market share compared to mechanical recycling in the packaging sector. Overall investments for these facilities ("core-process" only) are estimated to exceed €5 billion by 2030 and €14 billion by 2040.

Future of Chemical Recycling 2025 https://lnkd.in/eKeWc2Y7

Plastic recycling doesn’t grow as expected….