Results 41 to 50 of about 90 (85)

Plastic recycling: Challenges and opportunities

The Canadian Journal of Chemical Engineering, Volume 103, Issue 6, Page 2462-2498, June 2025.
Abstract This review offers an in‐depth exploration of current strategies for recycling plastic waste, focusing on mechanical, chemical, and energy recovery methods. It situates these strategies within the context of modern practices by examining ongoing research methodologies and specific case studies related to various types of plastic waste.
Pradeep Sambyal, Parisa Najmi, Devansh Sharma, Ehsan Khoshbakhti, Hadi Hosseini, Abbas S. Milani, Mohammad Arjmand   +6 more
wiley   +1 more source

Antioxidant Natural Plant Constituents for Diabetic Wound Repair

MedComm – Biomaterials and Applications, Volume 4, Issue 2, June 2025.
Antioxidant natural plant constituents promote diabetic wound repair by ameliorating oxidative stress, inhibiting inflammatory responses, and promoting tissue regeneration. ABSTRACT Diabetes mellitus is a prevalent metabolic disorder characterized by a prolonged hyperglycemic state, which can result in complications affecting multiple organ systems ...
Lele Meng, Xueying Zhang, Li Sun, Long Chen   +3 more
wiley   +1 more source

Synthetic Lignin Oligomers: Analytical Techniques, Challenges, and Opportunities

ChemSusChem, Volume 18, Issue 10, May 19, 2025.
The review begins by discussing lignin and its structural complexity, followed by challenges in elucidating depolymerization products and the analytical techniques used. It then focuses on the chemical structure of synthetic lignin oligomers, their synthesis mechanisms, and their significance in current science. Finally, scientific gaps are identified,
Myriam Rojas, Frederico G. Fonseca, Ursel Hornung, Axel Funke, Nicolaus Dahmen   +4 more
wiley   +1 more source

Sustainable Synthesis of 1,2,3‐Triazoles using Cyrene as a Biodegradable Solvent in Click Chemistry

ChemSusChem, Volume 18, Issue 10, May 19, 2025.
Green triazoles: The first successful synthesis of 1,2,3‐triazoles using Cyrene as a biodegradable and non‐toxic solvent in click chemistry has been developed. This sustainable approach allows product isolation by simple precipitation in water, eliminating the need for organic solvent extractions and chromatographic purifications, thus minimizing waste
Andrea Citarella, Alessandro Fiori, Alessandra Silvani, Daniele Passarella, Valerio Fasano   +4 more
wiley   +1 more source

Effective and Practical Stereoselective Synthesis of Nutlins Precursors by Immobilization of Privileged Chiral Mono‐Amidine Catalyst

Advanced Synthesis &Catalysis, Volume 367, Issue 9, May 6, 2025.
Abstract A strategy for the immobilization of Johnston's Mono(AMidine) catalyst (MAM) onto polystyrene, silica and hybrid silica‐polystyrene nanoparticles is presented. The catalyst activity was evaluated in the stereoselective aza‐Henry reaction leading to the pivotal β‐amino nitroalkane precursors of the anti‐cancer agents Nutlins (with Nutlin‐3a as ...
Sofia Toldo, Lorenzo Poletti, Graziano Di Carmine, Olga Bortolini, Carmela De Risi, Simona Felletti, Greta Compagnin, Alessandro Massi, Daniele Ragno   +8 more
wiley   +1 more source

One‐Pot Depolymerization of Mixed Plastics Using a Dual Enzyme System

ChemSusChem, Volume 18, Issue 9, May 5, 2025.
The concurrent depolymerization of a polymer blend comprising three hydrolyzable plastics is demonstrated by employing an esterase and a urethanase in a sequential one‐pot process. The reaction resulted in a depolymerization degree of around 40 %, which corresponds to a minimum monomer yield of 3 % for 4,4′‐methylenedianiline (MDA) and a maximum of 55 %
Yannick Branson, Jiawei Liu, Louis Schmidt, Jan Griebel, Andrea Prager, Lena Stieler, Daniel Breite, Thomas Bayer, Werner Besenmatter, Weiliang Dong, Ulrike Garscha, Uwe T. Bornscheuer, Ren Wei   +12 more
wiley   +1 more source

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Chromatography with Supercritical Fluids

Science, 1987
In supercritical fluid chromatography (SFC) the mobile phase is neither a gas nor a liquid, but is a supercritical fluid. As a result of the unique properties of supercritical fluids, SFC is rapidly becoming a prominent separation technique for the analysis of reactive, thermally labile, and nonvolatile compounds.
Milton L. Lee, Karin E. Markides
openaire   +3 more sources

Supercritical Fluid Chromatography and Extraction

Analytical Chemistry, 1992
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Douglas E. Raynie, T. L. Chester, J. D. Pinkston   +2 more
openaire   +4 more sources

Supercritical fluid chromatography [PDF]

Russian Chemical Reviews, 1992
The characteristic features of supercritical fluid chromatography (SCFC) are examined and there is a brief historical note concerning the development of the method. Information concerning the use of supercritical fluid chromatography in the analysis of objects of different nature is presented in the form of a table.
Platonov Igor A, I. V. Lobacheva, A. L. Lobachev, M. S. Vigdergauz   +3 more
openaire   +1 more source

Supercritical fluid chromatography

Microchemical Journal, 1989
Chromatography with a supercritical fluid as mobile phase was first reported more than twenty years ago [1], although only in recent years have its advantages been realized. These are especially relevant to oligomers, polymers, and polymer additives, and supercritical fluid chromatography (SFC) is finding increasing use in analyses in polymer chemistry.
I. L. Davies, Mark W. Raynor, K. D. Bartle   +2 more
openaire   +4 more sources