Interfacial tension and gas solubility of molten polymer polyethylene glycol in contact with supercritical carbon dioxide and argon

Kravanja, Gregor; Chen, Lin; Škerget, Mojca; Knez, Željko

doi:10.1016/j.supflu.2015.10.013

Cited by 25 publications

(16 citation statements)

References 40 publications

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“…The experimental data are shown in Figures 4 and 5. The authors have also investigated the solubility of CO 2 in the systems CO 2 + PEG 1500 and argon + PEG 1500 at temperature ranges from 328 K, to 363 K. 149 Jin et al investigated the solubility of poly(vinylpyrrolidone) (PVP) with molecular weights of 10 kg•mol −1 , 24 kg•mol −1 , 58 kg•mol −1 in CO 2 . Poly(vinylpyrrolidone) is one of the of the most important supplementary materials in the preparation of drugs.…”

Section: System Investigatedmentioning

confidence: 99%

“…The experimental data are shown in Figures and . The authors have also investigated the solubility of CO 2 in the systems CO 2 + PEG 1500 and argon + PEG 1500 at temperature ranges from 328 K, to 363 K …”

Section: System Investigatedmentioning

confidence: 99%

“…Figure 4. Solubility y (mol•mol −1 ) of CO 2 in different PEGs versus pressure at temperature 343 K: ( ■ ) CO 2 + PEG 1000, ( ◆ ) CO 2 +PEG 1500, (•) CO 2 + PEG 4000, (▲) CO 2 + PEG 600 149. …”

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confidence: 99%

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Solubility of Solids in Sub- and Supercritical Fluids: A Review 2010–2017

2017

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A review of the solubility data for solids in sub- and supercritical fluids published in the literature between 2010 and 2017 is presented, including the pressure and temperature ranges and correlation methods. Compounds are categorized into the following groups: pharmaceutical, biological, aromatic, nonaromatic, organometallic, and polymer. The most commonly used solvent is supercritical CO2; some data have also been published for other solvents, such as argon, propane, and fluorinated hydrocarbons.

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Section: System Investigatedmentioning

confidence: 99%

Section: System Investigatedmentioning

confidence: 99%

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Solubility of Solids in Sub- and Supercritical Fluids: A Review 2010–2017

2017

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“…This technique uses a polymer that is exposed to fluids under supercritical conditions, which causes plasticization of the polymer matrix and lowers the glass transition and melting temperature. After depressurization, CO 2 is released, and thermodynamic instability determines the supersaturation of dissolved carbon dioxide in the polymer matrix and cell nucleation takes place, as suggested by Karvanja et al [ 123 ]. Unfortunately, there are limitations to this method as the interaction between supercritical CO 2 and the polymer matrix is limited to low T g amorphous or semicrystalline regions only [ 124 , 125 ].…”

Section: Other Processes Using Supercritical Fluids In the Polymermentioning

confidence: 99%

Application of Fluids in Supercritical Conditions in the Polymer Industry

et al. 2021

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This article reviews the use of fluids under supercritical conditions in processes related to the modern and innovative polymer industry. The most important processes using supercritical fluids are: extraction, particle formation, micronization, encapsulation, impregnation, polymerization and foaming. This review article briefly describes and characterizes the individual processes, with a focus on extraction, micronization, particle formation and encapsulation. The methods mentioned focus on modifications in the scope of conducting processes in a more ecological manner and showing higher quality efficiency. Nowadays, due to the growing trend of ecological solutions in the chemical industry, we see more and more advanced technological solutions. Less toxic fluids under supercritical conditions can be used as an ecological alternative to organic solvents widely used in the polymer industry. The use of supercritical conditions to conduct these processes creates new opportunities for obtaining materials and products with specialized applications, in particular in the medical, pharmacological, cosmetic and food industries, based on substances of natural sources. The considerations contained in this article are intended to increase the awareness of the need to change the existing techniques. In particular, the importance of using supercritical fluids in more industrial methods and for the development of already known processes, as well as creating new solutions with their use, should be emphasized.

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“…Prior to supercritical processing, the emulsion was pipetted into the small cylindrical mold and then immediately placed into a high-pressure view equilibrium cell made of stainless steel (Sitec AG, Zurich, CH) ( Figure 1). 13 The high-pressure cell was pressurized to 12 MPa with CO 2 by a high-pressure pump (NWA PM-101). The pressure inside the cell was measured by an electronic pressure gauge (WIKA Alexander Wiegand GmbH & Co. KG, Alexander-Wiegand-Straße, Klingenberg, Germany).…”

Section: Scaffold Preparation In Sccomentioning

confidence: 99%

Protein Release from Biodegradable Poly(ε-Caprolactone)-Chitosan Scaffolds Prepared in scCO2

Kravanja¹,

Globočnik²,

Primožič³

et al. 2019

ACSi

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To study the release patterns of protein bovine serum albumin (BSA), porous poly(ε-caprolactone)-chitosan scaffolds with entrapped BSA were fabricated by using supercritical CO 2 for its potential use in tissue engineering applications. An emulsion, consisting of a polymer-solvent solution and buffer protein solution was saturated with scCO 2 at 12 MPa and 37 °C and then rapidly depressurized through a release valve causing bubble nucleation and precipitation of the composite material. The controlled total protein release from biodegradable poly(ε-caprolactone) with 5% chitosan (w/w) scaffolds was assessed by Bradford protein assay. After 16 to 20 days of protein release testing, 58.8% of the protein was released from composite with PCL (M w = 10,000 g/mol) and 43.9% from composite with PCL (M w = 60,000 g/mol). Preliminary studies for characterization of the prepared composite biomaterials using FTIR spectra, ESEM photo analysis and DSC analysis have been carried out.

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Interfacial tension and gas solubility of molten polymer polyethylene glycol in contact with supercritical carbon dioxide and argon

Cited by 25 publications

References 40 publications

Solubility of Solids in Sub- and Supercritical Fluids: A Review 2010–2017

Solubility of Solids in Sub- and Supercritical Fluids: A Review 2010–2017

Application of Fluids in Supercritical Conditions in the Polymer Industry

Protein Release from Biodegradable Poly(ε-Caprolactone)-Chitosan Scaffolds Prepared in scCO2

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