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Zeitschriftenartikel zum Thema „Solvent system“

Autor: Grafiati

Veröffentlicht am 18. Mai 2024

Zuletzt aktualisiert am 26. Juli 2025

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1

HR, Kuyakhi. "Estimation of Viscosity of the N-Alkane (C1-C 4) in Bitumen System Using Adaptive Neuro-Fuzzy Interference System (ANFIS)." Petroleum & Petrochemical Engineering Journal 4, no. 3 (2020): 1–5. http://dx.doi.org/10.23880/ppej-16000233.

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One of the important mechanisms in solvent-aided thermal recovery processes is viscosity reduction. Light n-alkane hydrocarbons are among the potential solvents for solvent-aided thermal recovery processes. In this study, the viscosity of C1- C4 n-alkanes in bitumen was investigated. Adaptive neuro-fuzzy interference system (ANFIS) was used for this aim. The result obtained by the ANFIS model analyzed with the statistical parameters (i.e., MSE, MEAE, MAAE, and R2) and graphical methods. Results show that the ANFIS has high capability to the prediction of solvent/bitumen mixture viscosity.

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Raksajati, Anggit, Minh Ho, and Dianne Wiley. "Solvent Development for Post-Combustion CO2 Capture: Recent Development and Opportunities." MATEC Web of Conferences 156 (2018): 03015. http://dx.doi.org/10.1051/matecconf/201815603015.

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Chemical absorption is widely regarded as the most promising technology for post-combustion CO2 capture from large industrial emission sources with CO2 separation from natural gas using aqueous amine solvent system having been applied since the 1930s. The use of monoethanolamine (MEA) in CO2 absorption system possesses several drawbacks, such as high regeneration energy, high solvent loss, and high corrosion tendency. Various solvents have been developed for post-combustion CO2 capture application including the development of aqueous solvents and phase-change solvents. Some of these alternate

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3

IGARI, Youichi. "Solvent recovery system." Circuit Technology 6, no. 3 (1991): 192–99. http://dx.doi.org/10.5104/jiep1986.6.3_192.

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4

Sun, Shanhu, Haobin Zhang, Jinjiang Xu, et al. "The competition between cocrystallization and separated crystallization based on crystallization from solution." Journal of Applied Crystallography 52, no. 4 (2019): 769–76. http://dx.doi.org/10.1107/s1600576719008094.

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The competition between cocrystallization and separated crystallization in a solvent was explored via X-ray diffraction and high-performance liquid chromatography methods in different solvents and by considering the solvent evaporation rate. The results revealed that the solvent system and solvent evaporation rate can affect the nucleation order of the cocrystal and coformers in the solution. In fact, solubility tests in different solvents confirmed that the solubility plays a key role in the cocrystal formation process. Furthermore, the width of the metastable zone influenced the solute nucle

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Watanabe, Kei, Taiki Nakamura, Byoung Suhk Kim, and Ick Soo Kim. "Preparation and Characteristics of Electrospun Polypropylene Fibers: Effect of Organic Solvents." Advanced Materials Research 175-176 (January 2011): 337–40. http://dx.doi.org/10.4028/www.scientific.net/amr.175-176.337.

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Recently, we have reported that syndiotactic polypropylene (sPP) fibrous membrane could be successfully prepared from a multi component solvent system via electrospinning at room temperature. The base solvent of multi component solvent system was cyclohexane. As demonstrated SEM images, the formation of rough surface morphologies and the microholes on electrospun sPP fibers were observed. In this study, we successfully prepared sPP nanofiber webs from a different base solvent was decalin. SEM study demonstrated that the sPP nanofibers prepared from decalin based solvent had smoother surface mo

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Tsukagoshi, Norihiko, and Rikizo Aono. "Entry into and Release of Solvents byEscherichia coli in an Organic-Aqueous Two-Liquid-Phase System and Substrate Specificity of the AcrAB-TolC Solvent-Extruding Pump." Journal of Bacteriology 182, no. 17 (2000): 4803–10. http://dx.doi.org/10.1128/jb.182.17.4803-4810.2000.

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ABSTRACT Growth of Escherichia coli is inhibited upon exposure to a large volume of a harmful solvent, and there is an inverse correlation between the degree of inhibition and the logP OW of the solvent, whereP OW is the partition coefficient measured for the partition equilibrium established between the n-octanol and water phases. The AcrAB-TolC efflux pump system is involved in maintaining intrinsic solvent resistance. We inspected the solvent resistance of ΔacrAB and/or ΔtolC mutants in the presence of a large volume of solvent. Both mutants were hypersensitive to weakly harmful solvents, s

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LIU, YANG, and KIAN-MENG LIM. "PARTICLE TRANSPORT ACROSS BI-FLUID INTERFACE USING ACOUSTIC RADIATION FORCE." Modern Physics Letters B 24, no. 13 (2010): 1397–400. http://dx.doi.org/10.1142/s0217984910023712.

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A bi-fluid micro-flow system is proposed for separating particles from its original solvent and re-diluting them into another solvent simultaneously. In this micro-flow system, two different miscible solvents flow parallel to each other through a 2-inlet-2-outlet micro-channel, where an acoustic standing wave is set up. Due to the differences in acoustic properties of these solvents, the pressure node of the acoustic wave is shifted from the middle line of the channel. Under the action of the acoustic radiation force, particles with positive ϕ-factors are extracted from their original solvent

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Liu, Lei-Gen, and Ji-Huan He. "Solvent evaporation in a binary solvent system for controllable fabrication of porous fibers by electrospinning." Thermal Science 21, no. 4 (2017): 1821–25. http://dx.doi.org/10.2298/tsci160928074l.

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Solvent evaporation is used for fabrication of nanoporous fibers by electrospinning, where multiple solvents are used. Pore size and distribution can be con-trolled by the fractions of the spun solution. An experiment was carefully designed, where polysulfone and poly(lactic acid) were dissolved in a binary solvent of dichloromethane and dimethylacetamide, to reveal the controllable process for fabrication of nanoporous fibers.

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Tan, Zhe, Yuhan Liu, and Bo Huang. "A highly efficient three-solvent methodology for separating colloidal nanoparticles." Nanoscale 14, no. 14 (2022): 5482–87. http://dx.doi.org/10.1039/d2nr00495j.

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The centrifugation mechanism in three-solvent systems was proposed, including film formation and film fusion. A novel three-solvent system with low-toxicity solvents and high separation efficiency was established for separating nanomaterials.

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Kim, Suhnue, Darae Lee, and Hyungsup Kim. "Cellulose Fiber with Enhanced Mechanical Properties: The Role of Co-Solvents in Gel-like NMMO System." Gels 10, no. 9 (2024): 607. http://dx.doi.org/10.3390/gels10090607.

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Cellulose has garnered attention in the textile industry, but it exhibits limitations in applications that require high strength and modulus. In this study, regenerated cellulose fiber with enhanced mechanical properties was fabricated from a gel-like N-methylmorpholine N-oxide (NMMO)–cellulose solution by modulating the intermolecular interaction and conformation of the cellulose chains. To control the interaction, two types of co-solvents (dimethyl acetamide (DMAc) and dimethyl formamide (DMF)) were added to the cellulose solutions at varying concentrations (10, 20, and 30 wt%). Rheological

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El Seoud, Omar A., Shirley Possidonio, and Naved I. Malek. "Solvatochromism in Solvent Mixtures: A Practical Solution for a Complex Problem." Liquids 4, no. 1 (2024): 73–94. http://dx.doi.org/10.3390/liquids4010003.

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Many reactions are carried out in solvent mixtures, mainly because of practical reasons. For example, E2 eliminations are favored over SN2 substitutions in aqueous organic solvents because the bases are desolvated. This example raises the question: how do we chose binary solvents to favor reaction outcomes? This important question is deceptively simple because it requires that we understand the details of all interactions within the system. Solvatochromism (solvent-dependent color change of a substance) has contributed a great deal to answer this difficult question, because it gives informatio

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Lang, Jinyan, Na Wang, Xinhui Wang, Yili Wang, Guorong Chen, and Heng Zhang. "Applications of the Hansen solubility parameter for cellulose." BioResources 16, no. 4 (2021): 7112–21. http://dx.doi.org/10.15376/biores.16.4.7112-7121.

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Based on the solubility parameter theory, the Hansen solubility parameters of various solvents were calculated and compared to predict the solubility of cellulose in various solvents, which illustrates the feasibility of Hansen solubility parameters to predict the solubility of cellulose in solvents. This paper aims to make a more accurate prediction in advance when finding suitable cellulose solvent system, and then to reduce the burden of cellulose solvent selection.

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Rabadanov, Kamil Sh, Malik M. Malik M.Gafurov, Magomed A. Akhmedov, Dzhennet I. Rabadanova, and Asiyat G. Magomedova. "INVESTIGATION OF SOLVATION IN LITHIUM PERCHLORATE -PROPYLENE CARBONATE-DIMETHYL CARBONATE SYSTEM BY RAMAN SPECTROSCOPY." ChemChemTech 67, no. 5 (2024): 36–42. http://dx.doi.org/10.6060/ivkkt.20246705.6967.

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The difference of solvent properties can significantly affect the solvation phenomena in individual and, especially, in mixed solutions. In particular, it can be assumed that in mixed solvents, i.e. in systems with intermediate dielectric permittivity (mixtures of linear and cyclic carbonic acid esters), cations will bind molecules of linear esters more strongly and bind molecules of cyclic esters more weakly than it takes place in individual solvents. In the present work the Raman spectra of lithium perchlorate solvents in propylene carbonate (PC), dimethyl carbonate (DMC) and their mixture i

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Alade, Olalekan S., Dhafer A. Al Shehri, Mohamed Mahmoud, et al. "Viscosity models for bitumen–solvent mixtures." Journal of Petroleum Exploration and Production Technology 11, no. 3 (2021): 1505–20. http://dx.doi.org/10.1007/s13202-021-01101-9.

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AbstractViscosity is the resistance of a material to continuous deformation exerted by shear force. High viscosity, which is sometimes greater than 1 million mPa s, at the initial reservoir conditions, is a major challenge to recovery, production, and transportation of bitumen. Addition of organic solvents or diluents with bitumen leads to significant viscosity reduction and forms the basis for the steam/solvent-assisted recovery methods of extra-heavy oil and bitumen. Therefore, modeling and predicting viscosity of bitumen–solvent mixture has become an important step in the development of sol

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Gealh, Gustavo, Maynara L. A. Santos, Marcos L. Corazza, Adrián Bonilla-Petriciolet, and Fernando A. P. Voll. "Lipase-Catalyzed Synthesis of Cetyl Palmitate in the Presence of n-Hexane and Ethyl Ether." International Journal of Chemical Engineering 2024 (April 4, 2024): 1–7. http://dx.doi.org/10.1155/2024/4796291.

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Cetyl palmitate was produced by the esterification of palmitic acid with cetyl alcohol using n-hexane and ethyl ether as solvents and a commercial lipase as a catalyst. The effect of solvents to reagents mass ratio (0.5 : 1–3 : 1), percentage of n-hexane in the solvent mixture (0–100%), and reaction temperature (25–55°C) on the reaction rate were evaluated for a fixed amount of enzyme (1 wt% related to the total mass of substrates) in an equimolar mixture of palmitic acid and cetyl alcohol. Temperature and n-hexane percentage in the solvent had positive effects on the reaction rate. The total

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Nyamiati, Retno Dwi, Siti Nurkhamidah, Yeni Rahmawati, and Wahyu Meka. "Kinetic and Thermodynamic Studies in Cellulose Acetate-Polybutylene Succinate(CA-PBS)/Single Solvent/Water System for Desalination Membrane." Eksergi 20, no. 1 (2023): 8. http://dx.doi.org/10.31315/e.v20i1.8820.

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The most important part of the membrane synthesis process so that it has the desired pores is the solidification process of the membrane, the process begins with a change from one liquid phase into two liquid phases (liquid-liquid demixing). At a certain period during demixing, the polymer-rich phase solidifies; thus, a dense membrane matrix is formed. Parameters that determine the mechanism of membrane formation are based on thermodynamics including phase separation of Solvent-Polymer-Non-solvent which is explained through a phase diagram (Flory-Huggins Theory). This study aims to determine t

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Aljuboori, Sahar Balkat, Nedaa Abdulhameed Abdulrahim, Shuhad Yassen, and Heba Hashim Khaleel. "Organic Synthesis under Solvent-free Condition (Green Chemistry): A Mini Literature Review." Al-Rafidain Journal of Medical Sciences ( ISSN: 2789-3219 ) 3 (December 17, 2022): 109–15. http://dx.doi.org/10.54133/ajms.v3i.94.

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Solvents are important components in the pharmaceutical and chemical industries, and they are increasingly being used in catalytic reactions. Solvents have a significant influence on the kinetics and thermodynamics of reactions, and they can significantly change product selectivity. Solvents can influence product selectivity, conversion rates, and reaction rates. However, solvents have received a lot of attention in the field of green chemistry. This is due to the large amount of solvent that is frequently used in a process or formulation, particularly during the purification steps. However, n

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Synooka, O., K. R. Eberhardt, and H. Hoppe. "Chlorine-free processed high performance organic solar cells." RSC Adv. 4, no. 32 (2014): 16681–85. http://dx.doi.org/10.1039/c4ra01783h.

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In this work, we demonstrate the successful replacement of a chlorinated solvent system based on a 1 : 1 mixture of chlorobenzene and ortho-dichlorobenzene with the chlorine-free solvent xylene, resulting in chlorine-free processing with a small amount of diiodooctane additive. In fact, the overall power conversion efficiency is improved from 6.71% for the chlorinated solvents to 7.15% for the chlorine-free solvent m-xylene.

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Polanowski, Piotr, and Andrzej Sikorski. "Simulation Studies of Dynamical Heterogeneity in a Dense Two-Dimensional Dimer–Solvent System with Obstacles." Entropy 26, no. 12 (2024): 1086. https://doi.org/10.3390/e26121086.

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A coarse-grained model of a two-dimensional colloidal suspension was designed. The model was athermal and, in addition, a lattice approximation was introduced. It consisted of solvent (monomer) molecules, dimer molecules, and immobile impenetrable obstacles that introduced additional heterogeneity into the system. Dynamic properties were determined by a Monte Carlo simulation using the dynamic lattice liquid simulation algorithm. It is shown that there is a range of obstacle concentrations in which different diffusion characteristics were observed for dimers and solvents. In the system studied

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Sanders, Alyssa B., Jacob T. Zangaro, Nakoa K. Webber, et al. "Optimization of Biocompatibility for a Hydrophilic Biological Molecule Encapsulation System." Molecules 27, no. 5 (2022): 1572. http://dx.doi.org/10.3390/molecules27051572.

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Despite considerable advances in recent years, challenges in delivery and storage of biological drugs persist and may delay or prohibit their clinical application. Though nanoparticle-based approaches for small molecule drug encapsulation are mature, encapsulation of proteins remains problematic due to destabilization of the protein. Reverse micelles composed of decylmonoacyl glycerol (10MAG) and lauryldimethylamino-N-oxide (LDAO) in low-viscosity alkanes have been shown to preserve the structure and stability of a wide range of biological macromolecules. Here, we present a first step on devel

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Khanjar, Jassim Mohammed, and Elham Omidbakhsh Amiri. "Simulation and parametric analysis of natural gas sweetening process: a case study of Missan Oil Field in Iraq." Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 76 (2021): 53. http://dx.doi.org/10.2516/ogst/2021033.

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Gas sweetening is one of the important purification processes which is employed to remove acidic contaminants from natural gases prior to meet transport requirements and sale gas specifications. In this work, simulation and parametric studies of the natural gas processing plant of Missan Oil Company/Buzurgan Oil Field of Natural Gas Processing Plant (in Iraq) were considered. After simulation and validation of this plant, the effect of feed temperature and flow rate and solvent concentration were considered. Results show with increasing the feed temperature and flow rate, the amount of H2S and

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Autenrieth, Caroline, and Robin Ghosh. "The Methoxylated, Highly Conjugated C40 Carotenoids, Spirilloxanthin and Anhydrorhodovibrin, Can Be Separated Using High Performance Liquid Chromatography with Safe and Environmentally Friendly Solvents." Metabolites 9, no. 2 (2019): 20. http://dx.doi.org/10.3390/metabo9020020.

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High performance liquid chromatography (HPLC) is a frequently used technique in carotenoid research. So far, however, little attention has been paid to the fact that many of the organic solvents used in HPLC separation of highly apolar C40 carotenoids impose a significant threat to both health (especially for women) and the general laboratory environment. Here, we developed a solvent combination capable of allowing high-resolution HPLC separation of the C40 carotenoid, spirilloxanthin, and all of its biosynthetic precursors beginning with phytoene, using relatively safe, environmentally friend

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Guerdouh, Amel, and Djamel Barkat. "Experimental study of the extraction of chromium (III) from nitrate medium by lauric acid." Metallurgical and Materials Engineering 24, no. 3 (2018): 189–97. http://dx.doi.org/10.30544/385.

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The solvent extraction of chromium (III) with lauric acid (HL) at 25°C is studied as a function of various parameters: pH of the aqueous phase, the concentration of lauric acid and the nature of the solvent. The solvent effects on the extraction of chromium (III) using polar and nonpolar solvents has been observed. It was shown that extracted species of the [Cr(OH)L2·2HL] formula are formed in cyclohexane, dichloromethane, chloroform, and toluene. However, in 1- -octanol or methyl isobutyl ketone, it was found a complex of the type [Cr(OH)L2]. The extraction constants and extraction yield (%E)

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Norjmaa, Gantulga, Gregori Ujaque, and Agustí Lledós. "Beyond Continuum Solvent Models in Computational Homogeneous Catalysis." Topics in Catalysis 65, no. 1-4 (2021): 118–40. http://dx.doi.org/10.1007/s11244-021-01520-2.

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AbstractIn homogeneous catalysis solvent is an inherent part of the catalytic system. As such, it must be considered in the computational modeling. The most common approach to include solvent effects in quantum mechanical calculations is by means of continuum solvent models. When they are properly used, average solvent effects are efficiently captured, mainly those related with solvent polarity. However, neglecting atomistic description of solvent molecules has its limitations, and continuum solvent models all alone cannot be applied to whatever situation. In many cases, inclusion of explicit

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Sasak, Krzysztof, Michał Nowak, Anna Wlodarczyk, Agata Sarniak, and Dariusz Nowak. "Effect of Selected Organic Solvents on Hydroxyl Radical-Dependent Light Emission in the Fe2+-EGTA-H2O2 System." Molecules 29, no. 23 (2024): 5635. http://dx.doi.org/10.3390/molecules29235635.

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Numerous compounds that are scavengers of hydroxyl radicals (•OH) in Fenton systems have low solubility in water. Therefore, they are dissolved in organic solvents to reach suitable concentrations in the reaction milieu of the Fenton system. However, these solvents may react with •OH and iron, leading to significant errors in the results. We evaluated 11 solvents (4 alcohols, acetone, 4 esters, dimethyl-sulfoxide, and acetonitrile) at concentrations ranging from 0.105 µmol/L to 0.42 µmol/L to assess their effects on light emission, a recognized measure of •OH radical activity, in the Fe2+-EGTA

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Maheu, Maxime, François Champoux, and Adrian Fuente. "Acute Vertigo in a Patient with Long-Term Organic Solvent Exposure: Importance of a Comprehensive Audio-Vestibular Test Battery." Journal of the American Academy of Audiology 31, no. 05 (2020): 363–68. http://dx.doi.org/10.3766/jaaa.19034.

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Abstract Background Ototoxicity induced by organic solvents has been identified in several groups of workers. Little is known, however, about the effects of organic solvents on the vestibular system. Purpose The aim of the study was to comprehensively assess the vestibular system and auditory functions in a worker exposed to organic solvents. Research Design Both behavioral and physiological auditory and vestibular evaluations were performed. Results No auditory-related findings associated with solvent exposure were found. The vestibulo-ocular reflex gain was abnormal for all semicircular cana

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Rajalaxmi Panda, Subhraraj Panda, and Susanta Kumar Biswal. "Ultrasonic Analysis of Sodium Thiosulfate in Water-Tetrahydrofuran Mixture Across Varying Temperatures." International Research Journal on Advanced Science Hub 7, no. 02 (2025): 109–19. https://doi.org/10.47392/irjash.2025.014.

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The research investigates the ultrasonic properties of sodium thiosulfate in a mixed solvent of water and tetrahydrofuran (10% w/w) across various temperatures (293 K, 298 K, 303 K, 308 K, and 313 K). Ultrasonic velocity measurements were performed to examine molecular interactions and the structural dynamics of the solution. Acoustic parameters, including adiabatic compressibility, acoustic impedance, and intermolecular free length, were extracted from the experimental data to elucidate the physicochemical properties of the system. Temperature fluctuations markedly affected ultrasonic velocit

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Obek, Christine Ann, Foster Kofi Ayittey, and Agus Saptoro. "Improved process modifications of aqueous ammonia-based CO2 capture system." MATEC Web of Conferences 268 (2019): 02004. http://dx.doi.org/10.1051/matecconf/201926802004.

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Extensive research works on CO2 capture process using MEA have been carried out and showed promising results. Nevertheless, it has been acknowledged that the use of MEA is associated with high cost, solvent degradation issues and corrosion. The issues above have motivated researchers to explore and test other potential solvents such as aqueous ammonia (NH3). As result, NH3 based CO2 capture systems have recently attracted much attention as an alternative to MEA based counterparts. Despite their encouraging applications, high volatility of NH3 raise concerns on the energy requirement related to

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Havránková, Jitka, Zuzana Limpouchová, and Karel Procházka. "Monte Carlo Study of Dilute Solutions of Heteroarm Star Copolymers in Solvents Differing in Thermodynamic Quality." Collection of Czechoslovak Chemical Communications 70, no. 11 (2005): 1848–60. http://dx.doi.org/10.1135/cccc20051848.

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Lattice Monte Carlo simulations (an original modification of the Siepmann and Frenkel simulation variant) was used to study the conformational behavior of heteroarm star copolymers star-(polystyrene; polyisoprene), PS8PI8, in a common good solvent for both types of arms (tetrahydrofuran) and in selective θ-solvents for both types of arms (in cyclohexane, i.e., in θ-solvent for PS and in 1,4-dioxane, i.e. in θ-solvent for PI). Results of simulations were compared with experimental data published by Pispas et al. The coarse graining procedure was performed to match the experimental behavior of h

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Mu, Liwen, Yijun Shi, Long Chen, et al. "[N-Methyl-2-pyrrolidone][C1–C4 carboxylic acid]: a novel solvent system with exceptional lignin solubility." Chemical Communications 51, no. 70 (2015): 13554–57. http://dx.doi.org/10.1039/c5cc04191k.

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Murakami, Yoichi, Sudhir Kumar Das, Yuki Himuro, and Satoshi Maeda. "Triplet-sensitized photon upconversion in deep eutectic solvents." Physical Chemistry Chemical Physics 19, no. 45 (2017): 30603–15. http://dx.doi.org/10.1039/c7cp06494b.

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Li, Xian-Zhi, Li Zhang, and Keith Poole. "Role of the Multidrug Efflux Systems ofPseudomonas aeruginosa in Organic Solvent Tolerance." Journal of Bacteriology 180, no. 11 (1998): 2987–91. http://dx.doi.org/10.1128/jb.180.11.2987-2991.1998.

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ABSTRACT Multidrug efflux pumps with a broad substrate specificity make a major contribution to intrinsic and acquired multiple antibiotic resistance in Pseudomonas aeruginosa. Using genetically defined efflux pump mutants, we investigated the involvement of the three known efflux systems, MexA-MexB-OprM, MexC-MexD-OprJ, and MexE-MexF-OprN, in organic solvent tolerance in this organism. Our results showed that all three systems are capable of providing some level of tolerance to organic solvents such as n-hexane andp-xylene. Expression of MexAB-OprM was correlated with the highest levels of to

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Choudhuri, Khokan, Arkalekha Mandal, and Prasenjit Mal. "Aerial dioxygen activation vs. thiol–ene click reaction within a system." Chemical Communications 54, no. 30 (2018): 3759–62. http://dx.doi.org/10.1039/c8cc01359d.

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By choosing appropriate reaction systems using solvents with additives or solvent free neat conditions, any one of the Markovnikov or anti-Markovnikov selective thiol–ene click (TEC) reactions and the synthesis of β-hydroxysulfides via aerial dioxygen activation could be achieved exclusively in excellent yields.

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Sharma, Apekshya, Evan Yu, Gregory Morose, David Trung Nguyen, and Wan-Ting Chen. "Designing Safer Solvents to Replace Methylene Chloride for Liquid Chromatography Applications Using Thin-Layer Chromatography as a Screening Tool." Separations 8, no. 10 (2021): 172. http://dx.doi.org/10.3390/separations8100172.

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Methylene chloride, commonly known as dichloromethane (DCM), is a widely used chemical for chromatography separation within the polymer, chemical, and pharmaceutical industries. With the ability to effectively solvate heterocyclic compounds, and properties including a low boiling point, high density, and low cost, DCM has become the solvent of choice for many different applications. However, DCM has high neurotoxicity and is carcinogenic, with exposure linked to damage to the brain and the central nervous system, even at low exposure levels. This research focuses on sustainability and works to

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Xiao, Xiu Feng, Jian Jin Jiao, Qiong Yu Huang, and Rong Fang Liu. "Fabrication of Polycaprolactone/Chitosan Scaffolds by Freeze-Solvent Extraction Method." Advanced Materials Research 311-313 (August 2011): 1695–98. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.1695.

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The polycaprolactone (PCL)/chitosan (CS) scaffolds were prepared by the freeze-solvent extraction method using glacial acetic acid with little water as a common blend system. The effect of different solvents on the crystallinity, the morphology, the structure and the mechanical properties of the scaffolds was studied. The results indicate that alkaline solvent favors the deposition of CS, solvent extraction in the frozen condition perfects the crystal of PCL and improves the crystallinity of PCL/CS scaffolds, in the mean while, the compression property enhances. The porosity of PCL/CS reaches

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Karpova, M. O., N. V. Makarova, D. F. Ignatova, and D. V. Budylin. "Determination of the type of solvent in the technology of production of tea extracts with antioxidant activity." Proceedings of the Voronezh State University of Engineering Technologies 82, no. 4 (2021): 169–78. http://dx.doi.org/10.20914/2310-1202-2020-4-169-178.

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The aim of the study was to determine the type of solvent that allows the most complete extraction of antioxidant substances from white, black and green tea (Camellia sinensis). The objects of the study were extracts of three types of tea obtained using various solvents: water, a mixture of water-ethanol (75% vol./25% vol.), A mixture of water-ethanol (50% vol./50% vol.), A mixture of water -ethanol (25% vol./75% vol.) and ethanol (96%). In extracts of white, black and green tea, the total content of phenolic substances, flavonoids, antiradical activity by the DPPH method, and the restoring fo

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Kaur, Gagandeep, Maryam Agboluaje, and Robin A. Hutchinson. "Measurement and Modeling of Semi-Batch Solution Radical Copolymerization of N-tert-Butyl Acrylamide with Methyl Acrylate in Ethanol/Water." Polymers 15, no. 1 (2022): 215. http://dx.doi.org/10.3390/polym15010215.

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The synthetic polymer industry is transitioning from the use of organic solvents to aqueous media in order to reduce environmental impact. However, with radical polymerization kinetics affected by hydrogen-bonding solvents, there is limited information regarding the use of water as a solvent for sparingly soluble monomers. Thus, in this paper, the radical polymerization of methyl acrylate (MA) and N-tert-butylacrylamide (t-BuAAm) is studied in water and ethanol (EtOH), as the copolymer product is of commercial interest. A series of semi-batch reactions are conducted under a range of operating

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Dindarloo Inaloo, Iman, and Sahar Majnooni. "Carbon dioxide utilization in the efficient synthesis of carbamates by deep eutectic solvents (DES) as green and attractive solvent/catalyst systems." New Journal of Chemistry 43, no. 28 (2019): 11275–81. http://dx.doi.org/10.1039/c9nj02810b.

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Cysewski, Piotr, Tomasz Jeliński, and Maciej Przybyłek. "Experimental and Theoretical Insights into the Intermolecular Interactions in Saturated Systems of Dapsone in Conventional and Deep Eutectic Solvents." Molecules 29, no. 8 (2024): 1743. http://dx.doi.org/10.3390/molecules29081743.

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Solubility is not only a crucial physicochemical property for laboratory practice but also provides valuable insight into the mechanism of saturated system organization, as a measure of the interplay between various intermolecular interactions. The importance of these data cannot be overstated, particularly when dealing with active pharmaceutical ingredients (APIs), such as dapsone. It is a commonly used anti-inflammatory and antimicrobial agent. However, its low solubility hampers its efficient applications. In this project, deep eutectic solvents (DESs) were used as solubilizing agents for d

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Noel, Nakita K., Severin N. Habisreutinger, Bernard Wenger, et al. "A low viscosity, low boiling point, clean solvent system for the rapid crystallisation of highly specular perovskite films." Energy & Environmental Science 10, no. 1 (2017): 145–52. http://dx.doi.org/10.1039/c6ee02373h.

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Steffensen, Astrid Kjær, Helena Lundberg, and Anders Riisager. "Deep Eutectic Solvents As Novel Solvent-Electrolyte System for Electroreductive Transformations." ECS Meeting Abstracts MA2024-02, no. 53 (2024): 3618. https://doi.org/10.1149/ma2024-02533618mtgabs.

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Organic electrosynthesis is regarded as a sustainable alternative to traditional organic synthesis as it enables replacement of stochiometric redox agents with electricity – which can be generated from renewable sources – and high product selectivity at ambient conditions [1]. However, the poor conductivity of the organic solvents typically requires the addition of large amounts of supporting electrolyte salts, leading to increased waste generation and lowered atom economy of the process. Alternative solvents such as room temperature ionic liquids (RTILs) and deep eutectic solvents (DESs) repr

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Lai, Chin-Hung, Chia-Chin Chang, Yi-Lin Weng, and Ta-Hsien Chuang. "Synthesis, Experimental and Density Functional Theory (DFT) Studies on Solubility of Camptothecin Derivatives." Molecules 23, no. 12 (2018): 3170. http://dx.doi.org/10.3390/molecules23123170.

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Two camptothecin derivatives, 10-cyclohexyl-7-methyl-20(S)-camptothecin and 7-methyl-10-morpholino-20(S)-camptothecin, were synthesized and their differences in solubility were investigated using four chosen solvent systems. Based on our results, 10-cyclohexyl-7-methyl-20(S)-camptothecin exhibited higher solubilities than 7-methyl-10-morpholino-20(S)-camptothecin in polar aprotic solvents. However, these two camptothecin derivatives did not exhibit apparent differences in solubility between 5% dimethyl sulfoxide (DMSO)/95% normal saline co-solvent system and 5% dimethylacetamide (DMAC)/95% nor

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Aliwarga, Lienda, Herri Susanto, Reynard Reynard, and Agnes Veronica Victoria. "UNIFAC Model for Liquid-Liquid Phase Equilibrium of Penicillin G and 6-APA System." Jurnal Kimia Valensi 5, no. 2 (2019): 185–93. http://dx.doi.org/10.15408/jkv.v5i2.9869.

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This study investigated the effect of pH and type of solvent on liquid-liquid phase equilibrium in the system of pure penicillin G and mixed penicillin G with 6-APA. Penicillin G extraction was carried out in a pH range of 2.0–5.0 at 4 oC using several types of solvents. The liquid-liquid phase equilibrium mathematical model is prepared assuming that a single stage of thermodynamic equilibrium occurs in a batch process of liquid-liquid extraction. The coefficient of activity was calculated by the UNIFAC method. From the experiment, it was found that the extraction process of penicillin G was s

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van Ballegooie, Courtney, Alice Man, Irene Andreu, Byron D. Gates, and Donald Yapp. "Using a Microfluidics System to Reproducibly Synthesize Protein Nanoparticles: Factors Contributing to Size, Homogeneity, and Stability." Processes 7, no. 5 (2019): 290. http://dx.doi.org/10.3390/pr7050290.

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The synthesis of Zein nanoparticles (NPs) using conventional methods, such as emulsion solvent diffusion and emulsion solvent evaporation, is often unreliable in replicating particle size and polydispersity between batch-to-batch syntheses. We have systematically examined the parameters for reproducibly synthesizing Zein NPs using a Y-junction microfluidics chip with staggered herringbone micromixers. Our results indicate that the total flow rate of the fluidics system, relative flow rate of the aqueous and organic phase, concentration of the base material and solvent, and properties of the so

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Jeslin, D., and K. Masilamani. "Current Insights of Nano Suspension Drug Delivery System: A Patent Review." INTERNATIONAL JOURNAL OF DRUG DELIVERY TECHNOLOGY 14, no. 01 (2024): 506–14. http://dx.doi.org/10.25258/ijddt.14.1.70.

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Unfortunately, water-solvency continues to be a usual characteristic of medication newcomers in medicine improvement pipelines today. Different cycles have been established to improve the solvency, disintegrating rate, and bioavailability associated with these dynamic fixes having a place utilizing the biopharmaceutics classification system (BCS) II through IV orders. Since the mid-2000s, nanosuspension, nanocrystal delivery, and nebulous strong scatterings have been more established approaches to overcome the obstructions of ineffective water solvent pharmaceuticals in food and drug administr

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Mu, Dan, Jian-Quan Li, Xing-Shun Cong, Yu-Wei Mi, and Han Zhang. "Solvent Effect on the Self-Assembly of a Thin Film Consisting of Y-Shaped Copolymer." Polymers 11, no. 2 (2019): 261. http://dx.doi.org/10.3390/polym11020261.

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The self-assembly of an amphiphilic Y-shaped copolymer consisting of two hydrophilic branches and one hydrophobic branch in a thin film is investigated under different conditions by virtue of mesoscopic computer modelling, accompanied by doping with a single solvent, doping with a binary solvent, and those solvent environments together with the introduction of confinement defined by various acting distances and influencing regions. A cylindrical micellar structure is maintained, as it is in the thin film with the doping of either 10% hydrophobic solvent or 10% hydrophilic solvent, whose struct

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Ugwu, K. E., and P. O. Ukoha. "Impacts of Extraction Methods and Solvent Systems in the Assessment of Toxic Organic Compounds in a Solid Matrix." Asian Journal of Chemistry and Pharmaceutical Sciences 1, no. 1 (2016): 23. http://dx.doi.org/10.18311/ajcps/2016/7523.

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Polycyclic Aromatic Hydrocarbons (PAHs) are among the listed persistent organic compounds (POP) which are pollutants of environmental concern due to their toxicity. This study evaluated soxhlet and ultrasonic extraction methods using a three-solvent system (acetone+dichloromethane+n-hexane) in order to compare the ability of the techniques to extract selected PAHs in raw coals collected from a coal mine in Okobo-Enjema, Nigeria. Then, binary solvent mixtures consisting of acetone+dichloromethane; dichloromethane+n-hexane; and acetone+n-hexane, were compared with the ternary solvent system for

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Shenderovich, Ilya G., and Gleb S. Denisov. "Modeling of Solute-Solvent Interactions Using an External Electric Field—From Tautomeric Equilibrium in Nonpolar Solvents to the Dissociation of Alkali Metal Halides." Molecules 26, no. 5 (2021): 1283. http://dx.doi.org/10.3390/molecules26051283.

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An implicit account of the solvent effect can be carried out using traditional static quantum chemistry calculations by applying an external electric field to the studied molecular system. This approach allows one to distinguish between the effects of the macroscopic reaction field of the solvent and specific solute–solvent interactions. In this study, we report on the dependence of the simulation results on the use of the polarizable continuum approximation and on the importance of the solvent effect in nonpolar solvents. The latter was demonstrated using experimental data on tautomeric equil

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Cipta, Oktavianus Hendra, Anita Alni, and Rukman Hertadi. "Molecular Dynamics Study of Candida rugosa Lipase in Water, Methanol, and Pyridinium Based Ionic Liquids." Key Engineering Materials 874 (January 2021): 88–95. http://dx.doi.org/10.4028/www.scientific.net/kem.874.88.

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The structure of Candida rugosa lipase can be affected by solvents used in the enzymatic reactions. Using molecular dynamics simulation as a tool to study the Candida rugosa lipase structure, we studied the effect of various solvent systems, such as water, water-methanol, and water-methanol-ionic liquid. These solvent systems have been chosen because lipase is able to function in both aqueous and non-aqueous medium. In this study, pyridinium (Py)-based ionic liquids were selected as co-solvent. The MD simulation was run for 50 nanoseconds for each solvent system at 328 K. In the case of water-

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Viney, C., and A. H. Windle. "Ternary Phase Equilibria for a Nitrocellulose/Solvent/Non-Solvent System." Liquid Crystals 1, no. 4 (1986): 379–96. http://dx.doi.org/10.1080/02678298608086670.

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