Shamna Salahudeen, Helena Fehrmann, Mirjam Schröder, Jabor Rabeah, Björn Corzilius, Esteban Mejía
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Simple Method for Transforming Liquid Silicone Oils Into High-Quality Solid Silicone Resins
A novel, cost-effective, and sustainable method for the synthesis of highly crosslinked methyl silicone resins by upcycling silicone oil, specifically linear polyorganylsiloxanes, was developed. Using mild reaction conditions, a high yield of DT resins (up to 80%) along with silicone oligomers as a byproduct was achieved. Solid state 29Si NMR spectroscopy confirmed the structure of the synthesized resins, while gas chromatographic analysis of the reaction headspace revealed methane as the only byproduct. Electron paramagnetic resonance (EPR) spectroscopy revealed the intermediacy of radical species, providing a unique insight into the reaction mechanism, which contrasts with traditional nucleophilic substitution pathways. This approach not only provides an efficient route to resin production, but also contributes as an alternative for the sustainable valorization of silicone waste.
期刊介绍：
Helvetica Chimica Acta, founded by the Swiss Chemical Society in 1917, is a monthly multidisciplinary journal dedicated to the dissemination of knowledge in all disciplines of chemistry (organic, inorganic, physical, technical, theoretical and analytical chemistry) as well as research at the interface with other sciences, where molecular aspects are key to the findings. Helvetica Chimica Acta is committed to the publication of original, high quality papers at the frontier of scientific research. All contributions will be peer reviewed with the highest possible standards and published within 3 months of receipt, with no restriction on the length of the papers and in full color.
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