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Wang W, Zhou Z, Zhou B. Droplet Evaporation Process of a Fluorobenzene + n-Octane + Polystyrene Mixture. Molecules 2023; 28:5659. [PMID: 37570628 PMCID: PMC10420279 DOI: 10.3390/molecules28155659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/17/2023] [Accepted: 07/21/2023] [Indexed: 08/13/2023] Open
Abstract
The vapor-liquid equilibrium of the fluorobenzene-polystyrene binary polymer solution at 303.15 K was measured using a static pressure device. The vapor-liquid equilibrium of the fluorobenzene-n-octane-polystyrene ternary solution in a partial concentration range under normal pressure was determined using an improved Othmer equilibrium still, in which the octane concentration was low. Three activity coefficient models, poly-NRTL, UNIQUAC, and M-UNIQUAC-LBY, were utilized to correlate the experimental data of binary and ternary solutions, and the component activities of the fluorobenzene-n-octane-polystyrene solution at 303.15 K were predicted. A mathematical model based on the Stefan flow was developed to simulate the evaporation process of composite spherical droplets. The activity predicted by the activity coefficient model was used for numerical simulations, and compared with simulations using the activity following Raoult's law. The comparative analysis revealed that simulations based on Raoult's law and activity coefficient models yielded similar results when the mass fraction of fluorobenzene exceeded 0.6. However, in the later stages of evaporation, the calculations based on Raoult's law predicted a 10% shorter drying time for fluorobenzene. The activity coefficient models provided a better approximation and exhibited similar droplet diameter shrinking behaviors to the actual evaporation process.
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Affiliation(s)
| | | | - Bo Zhou
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; (W.W.); (Z.Z.)
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Kortsen K, Fowler HR, Jacob PL, Krumins E, Lentz JC, Souhil MR, Taresco V, Howdle SM. Exploiting the tuneable density of scCO2 to improve particle size control for dispersion polymerisations in the presence of poly(dimethyl siloxane) stabilisers. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Determination of high-pressure phase equilibrium data of systems containing supercritical carbon dioxide and globalide. J Supercrit Fluids 2020. [DOI: 10.1016/j.supflu.2020.104996] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Encapsulation of pink pepper extract by SEDS technique: Phase behavior data and process parameters. J Supercrit Fluids 2020. [DOI: 10.1016/j.supflu.2020.104822] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Santos TMM, Chaves BB, Cerqueira JS, Canario MM, Bresolin D, Pinto JC, Machado RAF, Cabral-Albuquerque ECM, Vieira de Melo SAB. Dispersion Polymerization of Methyl Methacrylate in Supercritical CO 2: A Preliminary Evaluation of In Situ Incorporation of Copaiba Oil. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00652] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- T. M. M. Santos
- Programa de Engenharia Industrial, Escola Politécnica, Universidade Federal da Bahia, 40210-630 Salvador, BA, Brazil
| | - B. B. Chaves
- Programa de Engenharia Industrial, Escola Politécnica, Universidade Federal da Bahia, 40210-630 Salvador, BA, Brazil
| | - J. S. Cerqueira
- Programa de Engenharia Industrial, Escola Politécnica, Universidade Federal da Bahia, 40210-630 Salvador, BA, Brazil
| | - M. M. Canario
- Programa de Engenharia Industrial, Escola Politécnica, Universidade Federal da Bahia, 40210-630 Salvador, BA, Brazil
| | - D. Bresolin
- Programa de Pós-graduação em Engenharia Química, Universidade Federal de Santa Catarina, 88040-900 Santa Catarina, SC, Brazil
| | - J. C. Pinto
- Programa de Engenharia Química, COPPE, Universidade Federal do Rio de Janeiro, 21941-972, Rio de Janeiro, RJ, Brazil
| | - R. A. F. Machado
- Programa de Pós-graduação em Engenharia Química, Universidade Federal de Santa Catarina, 88040-900 Santa Catarina, SC, Brazil
| | - E. C. M Cabral-Albuquerque
- Programa de Engenharia Industrial, Escola Politécnica, Universidade Federal da Bahia, 40210-630 Salvador, BA, Brazil
| | - S. A. B. Vieira de Melo
- Programa de Engenharia Industrial, Escola Politécnica, Universidade Federal da Bahia, 40210-630 Salvador, BA, Brazil
- Centro Interdisciplinar em Energia e Ambiente, Campus Universitário da Federação/Ondina, Universidade Federal da Bahia, 40170-115 Salvador, BA, Brazil
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Matsukawa H, Yoda S, Okawa Y, Otake K. Phase Behavior of a Carbon Dioxide/Methyl Trimethoxy Silane/Polystyrene Ternary System. Polymers (Basel) 2019; 11:E246. [PMID: 30960230 PMCID: PMC6419055 DOI: 10.3390/polym11020246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 11/25/2022] Open
Abstract
Recently, polymeric foams filled with a silica aerogel have been developed. The phase behavior of CO₂/silicon alkoxide binary systems and CO₂/silicon alkoxide/polymer ternary systems is an important factor that affects the design of novel processes. The phase behavior of a carbon dioxide (CO₂)/methyl trimethoxy silane (MTMS)/polystyrene (PS) ternary system was measured using a synthetic method involving the observation of the bubble and cloud point. The phase boundaries were measured at temperatures ranging from 313.2 to 393.2 K and CO₂ weight fractions between 0.01 and 0.08. The CO₂/MTMS/PS system showed a similar CO₂ mass fraction dependence of the phase behavior to that observed for the CO₂/tetramethyl orthosilicate (TMOS)/PS system. When the phase boundaries of these systems were compared, the vapor-liquid (VL) and vapor-liquid-liquid (VLL) lines were found to be nearly identical, while the liquid-liquid (LL) lines were different. These results indicate that the affinity between the silicon alkoxide and polymer greatly influences the liquid-liquid phase separation.
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Affiliation(s)
- Hiroaki Matsukawa
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, Ichigaya Funakawara-machi 12-1, Shinjuku-ku, Tokyo 162-0826, Japan.
| | - Satoshi Yoda
- Nanosystem Research Institute, Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan.
| | - Yasuo Okawa
- Showa Jyushi Co. Ltd., Sekishinden, Yoshikawa, Saitama 342-0014, Japan.
| | - Katsuto Otake
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, Ichigaya Funakawara-machi 12-1, Shinjuku-ku, Tokyo 162-0826, Japan.
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