Experimental and computational phase behavior analysis of the PGME+CO2 and PGMEA+CO2 mixture at high pressures

Kwon, Yong-Soo; Dhamodharan, Duraisami; Choi, Hwan Geun; Shim, Sung-Won; Byun, Hun‐Soo

doi:10.1007/s11814-022-1110-7

Cited by 10 publications

(3 citation statements)

References 32 publications

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“…The experimental setup to analyze the phase transition of the combination of two components and three components of p(styrene- co -OFPMA) in sc-CO 2 is shown schematically in Figure (b), which is a high-pressure cell. Detailed descriptions of the setup can be found elsewhere. − A variable-volume view cell that can function at “ p ” up to 300.0 MPa was utilized to measure phase behavior. Supercritical chemical solvents were carefully injected into the vessel with a precision of 0.002 g utilizing an elevated pressure bomb to achieve precise measurements.…”

Section: Experimental Methodologymentioning

confidence: 99%

Phase Behavior of the Mixtures of 2- and 3-Components for Poly(styrene-co-octafluoropentyl methacrylate) by Dispersion Polymerization under CO₂

Behera,

Baskaran,

Byun

2024

ACS Omega

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The dispersed-phase polymerization of poly-(styrene-co-2,2,3,4,4,4-octafluoropentyl methacrylate), also known as p(styrene-co-OFPMA), took place in supercritical carbon dioxide (sc-CO 2 ). The chemical and physical properties of p(styrene-co-OFPMA) were studied by varying the styrene-to-OFPMA ratios (40:1, 30:1, and 20:1) and 2,2′-azobis(isobutyronitrile) (AIBN) initiator amounts (wt %: 1.0, 2.0, 3.0). The cloud-point data were obtained for various systems, including the binary mixtures of p(styrene-co-OFPMA) (30:1 ratio, AIBN wt %: 1.0, 2.0, 3.0) with supercritical solvents such as sc-CO 2 , sc-CH 3 OCH 3 , sc-C 3 H 6 , sc-C 4 H 8 , and sc-CHClF 2 . Phase behavior (i.e., mixtures) was studied at temperatures of 324−455 K and pressure below 201 MPa. In the binary system of p(styrene-co-OFPMA) + sc-CH 3 OCH 3 , a lower critical solution temperature (LCST)-type curve was observed, characterized by a positive slope. Conversely, the binary systems of p(styrene-co-OFPMA) + (sc-C3H 6 , sc-C 4 H 8 , sc-CHClF 2 ) exhibited an upper critical solution temperature (UCST) behavior with a decreasing slope. The phase equilibrium curves were obtained for p(styrene-co-OFPMA) [30:1; 1.0% (M w = 42,400), 2.0% (M w = 33,800), and 4.0% (M w = 24,100); AIBN: 1.0 wt %] + sc-C 3 H 6 , sc-C 4 H 8 , and sc-CHClF 2 mixtures. These curves exhibited an increasing slope for p(styrene-co-OFPMA) + sc-CH 3 OCH 3 and a negative slope for p(styrene-co-OFPMA) + (sc-C 3 H 6 , sc-C 4 H 8 , sc-CHClF 2 ) systems, indicating distinct phase behavior. Tetramethyl orthosilicate (TMOS) addition (0.0−68.9 wt %) to P(styrene-co-OFPMA) (30:1; AIBN wt %: 1.0) + solvents altered the phase equilibrium, switching from UCST to LCST, as evidenced by changes in the pressure−temperature slope.

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Section: Experimental Methodologymentioning

confidence: 99%

Phase Behavior of the Mixtures of 2- and 3-Components for Poly(styrene-co-octafluoropentyl methacrylate) by Dispersion Polymerization under CO₂

Behera,

Baskaran,

Byun

2024

ACS Omega

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“…2) and methods employed to determine the PB of the 355-TMHA and 335-TMCHMA monomers in Sc-CO 2 are depicted in depth elsewhere. [22][23][24][25][26][27][28][29][30] A 3 V cell was employed to assess the PB that controlled the pressure maximum at 200.0 MPa. Normally, CO 2 was introduced into the 3 V cell, within AE0.002 g with the aid of high-pressure equipment.…”

Section: Equipment and Proceduresmentioning

confidence: 99%

High-pressure phase equilibrium of the binary systems CO₂ + 355-TMHA and CO₂ + 335-TMCHMA

2023

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“…The relevance of the present study can be summarized as follows: (1) Advancement of supercritical fluid technology: This research contributes to our understanding of the phase behavior of binary mixtures involving supercritical CO 2 and organosilicon compounds. Such knowledge is vital for the development of supercritical fluid technologies used in various applications, including pharmaceuticals, green chemistry − and materials processing etc. − (2) Industrial processes : Improved knowledge of how these binary mixtures interact with supercritical CO 2 can lead to more efficient design and optimization industrial processes. (3) Scientific advancement : The study enhances our understanding of the phase equilibria and thermodynamics in high-pressure systems.…”

Section: Introductionmentioning

confidence: 99%

Binary Solution Behavior for the Trimethoxyphenylsilane and Trimethylphenylsilane Under CO₂ as Supercritical Fluid

Ghoderao,

Kim,

Byun

2023

Ind. Eng. Chem. Res.

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Experimental and computational phase behavior analysis of the PGME+CO2 and PGMEA+CO2 mixture at high pressures

Cited by 10 publications

References 32 publications

Phase Behavior of the Mixtures of 2- and 3-Components for Poly(styrene-co-octafluoropentyl methacrylate) by Dispersion Polymerization under CO₂

Phase Behavior of the Mixtures of 2- and 3-Components for Poly(styrene-co-octafluoropentyl methacrylate) by Dispersion Polymerization under CO₂

High-pressure phase equilibrium of the binary systems CO₂ + 355-TMHA and CO₂ + 335-TMCHMA

Binary Solution Behavior for the Trimethoxyphenylsilane and Trimethylphenylsilane Under CO₂ as Supercritical Fluid

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Experimental and computational phase behavior analysis of the PGME+CO2 and PGMEA+CO2 mixture at high pressures

Cited by 10 publications

References 32 publications

Phase Behavior of the Mixtures of 2- and 3-Components for Poly(styrene-co-octafluoropentyl methacrylate) by Dispersion Polymerization under CO2

Phase Behavior of the Mixtures of 2- and 3-Components for Poly(styrene-co-octafluoropentyl methacrylate) by Dispersion Polymerization under CO2

High-pressure phase equilibrium of the binary systems CO2 + 355-TMHA and CO2 + 335-TMCHMA

Binary Solution Behavior for the Trimethoxyphenylsilane and Trimethylphenylsilane Under CO2 as Supercritical Fluid

Contact Info

Product

Resources

About

Phase Behavior of the Mixtures of 2- and 3-Components for Poly(styrene-co-octafluoropentyl methacrylate) by Dispersion Polymerization under CO₂

Phase Behavior of the Mixtures of 2- and 3-Components for Poly(styrene-co-octafluoropentyl methacrylate) by Dispersion Polymerization under CO₂

High-pressure phase equilibrium of the binary systems CO₂ + 355-TMHA and CO₂ + 335-TMCHMA

Binary Solution Behavior for the Trimethoxyphenylsilane and Trimethylphenylsilane Under CO₂ as Supercritical Fluid