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Li, Yun, et al. Journal of Chemical & Engineering Data 65.2 (2020): 896-905.
Poly(propylene glycol) monobutyl ether (PPGME340) has been investigated as a promising CO₂-philic solvent for physical absorption due to its high boiling point, thermal stability, and abundant ether groups. In this study, hybrid absorbents composed of propylene carbonate (PC) and PPGME340 were prepared in varying mass fractions (w₁ = 0.0000-1.0000) to improve the industrial applicability of PPGME340 by reducing its high kinematic viscosity.
The hybrid systems were evaluated for their density, kinematic viscosity, and CO₂ absorption capacity across a range of temperatures (283.15-333.15 K) and pressures (0-1300 kPa). Results showed that increasing the PC fraction led to a notable decrease in kinematic viscosity and a slight increase in density. Among the mixtures, PC + PPGME340 with w₁ = 0.2501 demonstrated the optimal balance-exhibiting relatively high CO₂ absorption capacity and moderate viscosity.
Regression analysis confirmed that a linear equation accurately described the density behavior, while the Vogel-Fulcher-Tammann equation fit the viscosity data. CO₂ absorption data were well modeled using the extended Antoine equation, with minimal deviation. Compared to common commercial absorbents, the PC + PPGME340 mixtures, especially at w₁ = 0.2501, offer superior absorption capacities per mole and acceptable viscosities, making them strong candidates for next-generation industrial CO₂ capture processes.
This case demonstrates the applicability of poly(propylene glycol) monobutyl ether in designing efficient, thermally stable, and low-viscosity hybrid absorbents for sustainable gas separation technologies.
Hong, Lei, Deepak Tapriyal, and Robert M. Enick. Journal of Chemical & Engineering Data 53.6 (2008): 1342-1345.
Poly(propylene glycol) monobutyl ether (PPGMBE) has emerged as a promising oxygenated hydrocarbon-based polymer with excellent solubility in supercritical carbon dioxide (scCO₂), making it an attractive candidate for designing CO₂-philic surfactants, dispersants, thickeners, and chelating agents. In this study, the isothermal pressure-composition phase behaviors of CO₂-PPGMBE binary mixtures were systematically investigated at 298 K for three molecular weights: 340, 1000, and 1200 g·mol⁻¹.
Phase diagrams revealed the existence of vapor-liquid-liquid (VL₁L₂) three-phase equilibria and three distinct two-phase regions (VL₁, VL₂, and L₁L₂), confirming the complex phase behavior of CO₂-PPGMBE mixtures. The VL₁L₂ region for PPGMBE-340 appeared at 6.41 MPa, and a mixture critical point was estimated near 7.2 MPa. For higher molecular weights (1000 and 1200), critical points shifted significantly to 31.0 and 41.7 MPa, respectively, near 23 wt% polymer concentration.
These results highlight the strong CO₂ affinity of PPGMBE across different molecular weights, which correlates with its ether functionalities and tunable chain lengths. The clear understanding of critical points and phase behaviors offers a thermodynamic foundation for tailoring PPGMBE-based materials for scCO₂ applications, enabling greener solvent systems and advanced formulations in supercritical fluid technologies. This study demonstrates the utility of PPGMBE in the development of next-generation CO₂-soluble functional materials.
What is the chemical formula of Butoxypolypropylene glycol?
The chemical formula of Butoxypolypropylene glycol is (C3H6O)n.C4H10O.
What are some synonyms for Butoxypolypropylene glycol?
Some synonyms for Butoxypolypropylene glycol are PPG Butyl ether, Polyoxypropylene butyl ether, Polypropylene glycol butyl ether, and Butoxy polypropylene glycol.
What is the IUPAC name of Butoxypolypropylene glycol?
The IUPAC name of Butoxypolypropylene glycol is 1-(1-Butoxypropan-2-yloxy)propan-2-ol.
What is the boiling point of Butoxypolypropylene glycol?
The boiling point of Butoxypolypropylene glycol is >200 °C.
What is the density of Butoxypolypropylene glycol?
The density of Butoxypolypropylene glycol is 1.0g/ml.
What percentage of actives does Butoxypolypropylene glycol contain?
Butoxypolypropylene glycol contains 95% actives.
What is the physical state of Butoxypolypropylene glycol?
Butoxypolypropylene glycol is in the liquid state.
What are some typical applications of Butoxypolypropylene glycol?
Some typical applications of Butoxypolypropylene glycol include use as an emulsifying agent, dispersing agent, solubilizing agent, and cleansing agent.
What is the molecular structure of Butoxypolypropylene glycol?
The molecular structure of Butoxypolypropylene glycol is represented by the SMILES CCCCOCC(C)OCC(C)O.
What is the CAS number of Butoxypolypropylene glycol?
The CAS number of Butoxypolypropylene glycol is 9003-13-8.
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