Phase behavior and characterization of the poly(methyl methacrylate-co-octafluoropentyl methacrylate) [P(MMA-co-OFPMA)] by supercritical dispersion polymerization

Cho, Sang-Ha; Kim, Chang-Ryung; Yoon, Soon-Do; Byun, Hun‐Soo

doi:10.1016/j.fluid.2015.03.037

Cited by 19 publications

(5 citation statements)

References 22 publications

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“…At “ T ” below 380 K, the phase transition curve shows a gradual increase in “ p ”, indicating that phase separation is primarily governed by interactions between copolymer molecules or solvent molecules rather than copolymer–solvent interactions. The strong copolymer–copolymer interactions lead to the precipitation of the p(styrene- co -OFPMA) copolymer among the two-component system, resulting in phase separation. , …”

Section: Resultsmentioning

confidence: 99%

“…The strong copolymer–copolymer interactions lead to the precipitation of the p(styrene- co -OFPMA) copolymer among the two-component system, resulting in phase separation. 22 , 35 …”

Section: Resultsmentioning

confidence: 99%

“…The strong copolymer−copolymer interactions lead to the precipitation of the p(styrene-co-OFPMA) copolymer among the two-component system, resulting in phase separation. 22,35 Tables 7 and 8 provide the investigational data, and Figure 8 illustrates the phase transition of a two-component system of p(styrene-co-OFPMA) with different mole ratios (20:1, 30:1, 40:1) along with a specified AIBN concentration of 2.0 wt % and a DA concentration of 15 wt % in sc-1-butene. The phase transition characteristics of the p(styrene-co-OFPMA) [AIBN wt %: 2.0; DA wt %:15; mole ratio: 20:1, 30:1] + 1-butene system overlaps within the "T" of 375 to 450 K. All of the curves of different mole ratios are UCST type with declining slopes within "T" of 331−455 K and "p" less than 75 MPa.…”

Section: Phase Transitionmentioning

confidence: 99%

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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: Resultsmentioning

confidence: 99%

“…The strong copolymer–copolymer interactions lead to the precipitation of the p(styrene- co -OFPMA) copolymer among the two-component system, resulting in phase separation. 22 , 35 …”

Section: Resultsmentioning

confidence: 99%

Section: Phase Transitionmentioning

confidence: 99%

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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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“…Nevertheless, the PB performance of a polymer-solvent (twocomponent) system has been reported by several scientists. Experimental investigations have been consistently published by Radosz et al, 15,16 Kiran et al, 17 Byun et al, 18,19 and McHugh et al. [20][21][22] Prior to the 1980s, a PB investigation for a binary model comprising a polymer in SCFs had been provided by Wolf and Blaum 23,24 and Cowie and McEwen.…”

Section: Introductionmentioning

confidence: 99%

Bubble and dew-point measurement of mixtures of 1H,1H,2H-perfluoro-1-octene and 1H,1H,2H,2H-perfluoro-1-octanol in supercritical CO₂

et al. 2022

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“…Prior experimental works − report the solubility of poly(methacrylate) in SCF solvents at high pressure and various temperatures and the dissolution of poly(methacrylate) with acrylate- and methacrylate-monomer. The cosolvent in SCF solvents is possible to promote the solubility of polymer with high molecular weight in a given solvent owing to several reasons.…”

Section: Introductionmentioning

confidence: 99%

Phase Behavior for the Poly(phenyl methacrylate) and Phenyl Methacrylate in Supercritical Carbon Dioxide and Dimethyl Ether

2017

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Experimental data up to 463.1 K and 269.14 MPa are revealed for binary and ternary mixtures of poly(phenyl methacrylate) [P(PhMA)] + carbon dioxide (CO 2 ) + phenyl methacrylate (PhMA) and P(PhMA) + CO 2 + dimethyl ether (DME) systems. The cloud-point pressure for the P(PhMA) + CO 2 + PhMA system is measured with the variations of temperature, and PhMA weight fraction of 39.4, 45.8, 54.2, 59.9, and 62.1 wt %. In 62.1 wt % PhMA to the solution of P(PhMA) + carbon dioxide, the cloud-point phase behaviors are shown the typical lower critical solution temperature (LCST). In addition, the effect by cosolvents concentration for the P(PhMA) + CO 2 + DME system is investigated at temperature to 453.9 K and pressure range from 52.24 to 80.86 MPa. The cloud point curve for P(PhMA) + CO 2 + DME systems is shifted from LCST region to upper critical solution temperature (UCST) region according to the increase of DME concentration. We report experimental data of the PhMA + CO 2 system at high pressures range from 6.24 to 24.90 MPa and at several temperatures, that is, 313.2, 333.2, 353.2, 373.2, and 393.2 K. The experimental results are correlated by the Peng−Robinson model with the van der Waals one-fluid mixing rule. Overall, group contributions methods estimate the critical properties for used chemicals in this study.

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Phase behavior and characterization of the poly(methyl methacrylate-co-octafluoropentyl methacrylate) [P(MMA-co-OFPMA)] by supercritical dispersion polymerization

Cited by 19 publications

References 22 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

Bubble and dew-point measurement of mixtures of 1H,1H,2H-perfluoro-1-octene and 1H,1H,2H,2H-perfluoro-1-octanol in supercritical CO₂

Phase Behavior for the Poly(phenyl methacrylate) and Phenyl Methacrylate in Supercritical Carbon Dioxide and Dimethyl Ether

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Phase behavior and characterization of the poly(methyl methacrylate-co-octafluoropentyl methacrylate) [P(MMA-co-OFPMA)] by supercritical dispersion polymerization

Cited by 19 publications

References 22 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

Bubble and dew-point measurement of mixtures of 1H,1H,2H-perfluoro-1-octene and 1H,1H,2H,2H-perfluoro-1-octanol in supercritical CO2

Phase Behavior for the Poly(phenyl methacrylate) and Phenyl Methacrylate in Supercritical Carbon Dioxide and Dimethyl Ether

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Product

Resources

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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

Bubble and dew-point measurement of mixtures of 1H,1H,2H-perfluoro-1-octene and 1H,1H,2H,2H-perfluoro-1-octanol in supercritical CO₂