Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 142050 - 142050
Published: March 1, 2025
Language: Английский
European Polymer Journal, Journal Year: 2023, Volume and Issue: 192, P. 112068 - 112068
Published: April 10, 2023
Language: Английский
Citations
141
Energy, Journal Year: 2023, Volume and Issue: 275, P. 127522 - 127522
Published: April 14, 2023
Language: Английский
Citations
30
ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(13), P. 5343 - 5355
Published: March 22, 2024
As a hydrophilic polyether molecule, polyethylene glycol has environmentally friendly, degradable, and compatibility characteristics, gradually becoming potential choice for green lubrication. Two novel multifunctional protic ionic liquids (ILs) were synthesized, an ILs-PEG200 lubrication system was constructed with strong hydrogen bonding network structure. The determination of rheological properties boundary states inspired us to consider the interaction between polar additives systems. Surprisingly, extremely stable run-in period obtained by high efficiency adsorption contributed from high-polarity ILs at sliding interface in initial shear stage. Meanwhile, also superior load carrying antishear properties, as well remarkable stability even under very loads, showing certain engineering applications. In addition, mechanism exploring among ILs, PEG system, metal surface, results revealed that tribo-oxidation reactions, physical/chemical adsorption, tribochemical reactions occurred on asperity during shear. Therefore, tribofilm containing phosphates sulfides is generated through occurrence reaction synergistic effect base interface, functional additives. this work can significantly enhance tribological performance poly(ethylene glycol) systems harsh conditions, providing theoretical basis its development field.
Language: Английский
Citations
9
Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: unknown, P. 136083 - 136083
Published: Jan. 1, 2025
Language: Английский
Citations
1
The Journal of Physical Chemistry B, Journal Year: 2023, Volume and Issue: 127(5), P. 1178 - 1196
Published: Jan. 26, 2023
Molecular dynamics (MD) simulations are reported for [polyethylene glycol (PEG)200], a polydisperse mixture of ethylene oligomers with an average molar weight 200 g·mol-1. As first step, available force fields describing were tested on how accurately they reproduced experimental properties. They found to all fall short either reproducing density, static property, or the self-diffusion coefficient, dynamic property. Discrepancies data increased increasing size oligomer. From fields, optimized potential liquid simulation (OPLS) field was used further investigate which adjustments would improve agreement simulated physical properties ones. Two parameters identified and adjusted, (HO)-C-C-O proper dihedral polarity hydroxy group. The parameter depended Next, PEG200 OPLS without modifications inspect their effects results. significantly decreased hydrogen bonding overall propensity intramolecular bond formation at cost intermolecular formation. Moreover, some tri- more so tetraethylene formed bonds between end groups while still maintaining strong interactions ether oxygen atoms. These observations allowed interpretation obtained RDFs as well structural such end-to-end distances radii gyration. MD showed no evidence preferential association like-oligomers form clusters nor any long-range ordering side-by-side stacking oligomers. Instead, results support picture being random its oligomer components. Finally, additional binary tri-and hexaethylene same revealed very similar PEG200.
Language: Английский
Citations
19
Hybrid Advances, Journal Year: 2024, Volume and Issue: 5, P. 100140 - 100140
Published: Jan. 10, 2024
Semiconducting nanofluids (SNFs) consisting of poly (ethylene glycol) (PEG200) as a green biocompatible base fluid with homogeneous dispersion eco-friendly zinc oxide (ZnO) nanomaterial, concentrations ranging from 0.01 to 0.20 wt%, are prepared by state-of-the-art ultrasonic cavitation homogenized process. These PEG200/ZnO SNFs characterized employing an ultraviolet-visible (UV-Vis) spectrophotometer, precision inductance-capacitance-resistance (LCR) meter, and rotational viscometer. A detailed analysis 200–800 nm range UV–Vis absorbance spectra these revealed longer stability suspended ZnO nanoparticles in PEG200 fluid, their nanomaterial dependent extinction coefficient tunable dual energy band gaps 3 5 eV. Optical performance recognized the potential applications advances soft matter based optoelectronic photosensitive devices also excellent UV radiation shielding material. The study 20 Hz – 1 MHz dielectric electrical explained that have significant impact on conductivity SNFs, while permittivity electrode polarization relaxation process marginally altered. High static (∼ 22) low about μS/cm order, at 303.15 K, evidence suitability storage devices. rheological behaviour materials is carried out different temperatures 323.15 which illustrates Newtonian characteristics moderate dynamic viscosity activation could be utilized effective heat transfer photovoltaic/thermal systems.
Language: Английский
Citations
8
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 154054 - 154054
Published: July 24, 2024
Language: Английский
Citations
8
Small, Journal Year: 2024, Volume and Issue: 20(27)
Published: Feb. 2, 2024
Abstract This study aims to compare the potential of Polyethylene glycol (PEG‐free and PEG‐based self‐emulsifying drug delivery systems (SEDDS) for oral administration insulin glargine (IG). Hydrophobic ion pairs (HIPs) IG are formed using various counterions. HIPs assessed log P octanol/water dissociation behavior. They incorporated into SEDDS based on polyglycerol (PG) zwitterionic surfactant (ZW) response surface methodology compared conventional PEG‐SEDDS in size, stability, D SEDDS/release medium . Oral bioavailability PG/ZW‐SEDDS is evaluated rats. Among counterions studied, IG‐BIS (bis(isotridecyl)sulfosuccinate) demonstrated highest an improved profile. have similar ≈40 nm sizes stable over 24 h. Both formulations > 4 water >2 50 mM phosphate buffer pH 6.8. yielded 2.13 ± 0.66% IG, while employment resulted 1.15 0.35%. highlights prospective utilization PEG‐free involving concurrent application PG ZW surfactants, alternative PEG therapeutic (poly) peptide delivery.
Language: Английский
Citations
7
RSC Advances, Journal Year: 2024, Volume and Issue: 14(38), P. 28125 - 28137
Published: Jan. 1, 2024
The thermophysical properties of the polyethylene glycol oligomer obtained by AMBER force field are in excellent agreement with experimental data.
Language: Английский
Citations
7
Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(44)
Published: June 5, 2024
Driven by escalating environmental concerns, synthetic chemistry faces an urgent need for a green revolution. Green chemistry, with its focus on low impacting chemicals and minimized waste production, emerges as powerful tool in addressing this challenge. Metrics such the E-factor guide design of environmentally friendly strategies chemical processes quantifying generated obtaining target products, thus enabling interventions to minimize it. Phthalocyanines (Pcs), versatile molecules exceptional physical properties, hold immense potential technological applications. This review aims bridge gap between phthalocyanine synthesis collecting main examples sustainable syntheses documented literature. The calculation selection them provides insights how crucial it is evaluate process entirety. approach allows better evaluation actual sustainability indicates possible improve
Language: Английский
Citations
5