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Showing 1 to 11 of 11 for “"n-methyl-2-pyrrolidone"”.
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Design, construction, and evaluation of coal extraction pilot plant to manufacture coal-based carbon pitch
… and atmospheric pressure) using the solvent N-Methyl-2-Pyrrolidone (NMP). Laboratory results have shown that this technique yields a clean coal product containing less than 1 percent ash and virtually no inorganic sulfur.;This research was conducted for further process design and economic …
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Thermodynamical, structural, and dynamical characterization of solvent mixtures of technological interest: experimental and computational studies
N-methyl-2-pyrrolidone(NMP) and ionic liquids(ILs)are solvents with “green” characteristics, such as low volatility and low toxicity. They can be used as a valid alternative to the common organic solvents with a high environmental, health and safety impact. The aim of my research was to investigate …
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Development of a Novel Vaccine Adjuvant System Utilizing an In Situ Implant System to Modified Release
… comprised of hydrophilic organic solvent (e.g. N-Methyl-2-Pyrrolidone, NMP) and hydrophobic polymer (e.g. poly (lactide-co-glycolide), PLGA). We have given this concept the name of AdjuGel to distinguish it from simple drug administration. It was developed by incorporating an oil (e.g. Acetyl …
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Supramolecular Chemistry at the Polymer-Oil Interface
… with tertiary amides were studied. With N,N-dimethylformamide, a 1:2 co-crystal was seen but the structure with N-methyl-2-pyrrolidone had a stoichiometry of 1:1. In both structures the oxygen of the amide is involved in a halogen bonding; however, for N-methyl-2-pyrrolidone it is bifurcated …
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Inkjet Printing of 2d Materials on Flexible and Rigid Substrates
… in isopropyl alcohol (IPA) with polyvinylpyrrolidone (PVP), followed by a centrifuge process. This allows one-step formulation of a polymer stabilised graphene ink. For MXene inks, I design a multi-solvent system for binder-free ink formulation. The formulated MXene inks show enhanced …
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Synthesis and Characterization of Novel Polybenzimidazoles and Post-modifications for Membrane Separation Applications
… organic solvents including dimthylsulfoxide, dimethylacetamide and N-methyl-2-pyrrolidone in comparison with the commercial polybenzimidazole, Celazole®, poly(2,2'-(m-phenylene)-5,5'-bibenzimidazole). The improvements in solubility are attributed to the introduction of polar sulfonyl linking …
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Solution-casting of Disulfonated Poly(arylene ether sulfone) Multiblock Copolymer Films for Proton Exchange Membranes
… by simply utilizing a selective solvent, dimethylacetamide (DMAC), which is good and marginal for the sulfonated and unsulfonated blocks, respectively, rather than N-methyl-2-pyrrolidone (NMP), a neutral solvent for both blocks. The drying temperature was also observed to have considerable …
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Evaluation of solvent swelling pre-treatment combined with ammonia leaching using waste etchant from printed circuit board manufacturing for copper recovery from waste printed circuit boards
… with a key focus on solvent swelling with N-Methyl-2-pyrrolidone (NMP) and NMP based solvent (Solvent B). The characterization of the custom-made PCB determined that 47.2% of the copper was located on the surface of the PCB and 52.8% in the inner layers. The success of the solvent swelling …
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Biodegradable Polymeric Biomaterials in Different Forms for Long-acting Contraception and Drug Delivery to the Eye and Brain
… of these polyesters, use solvent mixtures of N-methyl-2-pyrrolidone, triethyl citrate, benzyl benzoate, and vary the polymer/solvent ratios, and various drug loadings. The formulations were evaluated for viscosity, initial burst, in vitro and in vivo long-term release. In vivo investigation in …
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Sustainable P2 design for batch-based specialty chemical manufacture
… study has been conducted on the reduction of n-methyl-2-pyrrilodone (NMP) solvent waste in the manufacture of polyimide and polybenzoxazole precursors. The evaluation includes the environmental and economic assessment of solvent recovery and substitution strategies. A two-step distillation …
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On the fundamental mechanisms & optimisation of ultrasonic assisted liquid phase exfoliation of two dimensional nanomaterials
… As of this date, toxic solvents such as N-Methyl-2-pyrrolidone (NMP) are commonly used for the production of graphene and other 2D layers. This research was intended to find a suitable eco-friendly liquid media alternative to NMP, such as water or water-based solutions for ULPE. However, in …