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Static Light Scattering Monitoring and Kinetic Modeling of Polyacrylamide Hydrogel Synthesis. Processes (Basel) 2019. [DOI: 10.3390/pr7040237] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A kinetic model describing aqueous acrylamide homopolymerization and copolymerization of acrylamide with methylene bisacrylamide, leading to hydrogel formation, is presented and applied in the simulation of these reaction processes. This modeling approach is based on population balances of generating functions and, besides the crosslinking mechanisms inherent to network formation, other specific kinetic steps important in acrylamide polymerization (e.g., branching due to backbiting) are considered in the simulation tool developed. The synthesis of acrylamide polymers and hydrogels was performed at 26 °C and at 40 °C using two different initiation systems. The formation of such materials was monitored using in-line static light scattering (SLS), and the spatial inhomogeneity of the final hydrogels was also measured using this experimental technique. It is shown that the simulations are helpful in describing information provided by SLS in-line monitoring, namely in the early stages of polymerization with the transition from dilute to semi-dilute regime. Indeed, it finds a plausible match between the critical overlap polymer concentration and gelation, this later leading to the observed spatial heterogeneity of the hydrogels. Usefulness of the kinetic model for defining operation conditions (initial composition, semi-batch feed policies, chain transfer, etc.) in making the shift from gelation to the semi-dilute regime is discussed, and the extension of this approach to processes enabling a higher control of gelation (e.g., controlled radical polymerization) is also prospected.
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Gomes CP, Dias RCS, Costa MRPFN. Polymer Reaction Engineering Tools to Tailor Smart and Superabsorbent Hydrogels. POLYMERS AND POLYMERIC COMPOSITES: A REFERENCE SERIES 2019. [DOI: 10.1007/978-3-319-77830-3_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Santos VN, Aguiar LG, Giudici R. Autoacceleration and Cyclization Effects on Styrene/Divinylbenzene Copolymerization. MACROMOL REACT ENG 2016. [DOI: 10.1002/mren.201600021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Vinícius N. Santos
- Universidade de São Paulo; Escola Politécnica; Department of Chemical Engineering; Av. Prof. Luciano Gualberto, travessa 3, no. 380 - Cidade Universitária 05508-010 São Paulo SP Brazil
| | - Leandro G. Aguiar
- Universidade de São Paulo, Escola de Engenharia de Lorena; Department of Chemical Engineering; 12602-810 Lorena SP Brazil
| | - Reinaldo Giudici
- Universidade de São Paulo; Escola Politécnica; Department of Chemical Engineering; Av. Prof. Luciano Gualberto, travessa 3, no. 380 - Cidade Universitária 05508-010 São Paulo SP Brazil
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Hernández-Ortiz JC, Vivaldo-Lima E, Dubé MA, Penlidis A. Modeling of Network Formation in the Atom Transfer Radical Co-Polymerization (ATRP) of Vinyl/Divinyl Monomers Using a Multifunctional Polymer Molecule Approach. MACROMOL THEOR SIMUL 2014. [DOI: 10.1002/mats.201400015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Julio César Hernández-Ortiz
- Facultad de Química; Departamento de Ingeniería Química; Universidad Nacional Autónoma de México; 04510 México D.F. México
| | - Eduardo Vivaldo-Lima
- Facultad de Química; Departamento de Ingeniería Química; Universidad Nacional Autónoma de México; 04510 México D.F. México
| | - Marc A. Dubé
- Department of Chemical and Biological Engineering; Centre for Catalysis Research and Innovation; University of Ottawa; Ottawa Ontario, Canada K1N 6N5
| | - Alexander Penlidis
- Department of Chemical Engineering; Institute for Polymer Research; University of Waterloo; Waterloo Ontario, Canada N2L 3G1
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Aguiar LG, Gonçalves MAD, Pinto VD, Dias RCS, Costa MRPFN, Giudici R. Mathematical Modeling of NMRP of Styrene-Divinylbenzene over the Pre- and Post-Gelation Periods Including Cyclization. MACROMOL REACT ENG 2013. [DOI: 10.1002/mren.201300171] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Leandro G. Aguiar
- Escola Politécnica da Universidade de São Paulo; Departamento de Engenharia Química. Av. Prof. Luciano Gualberto; travessa 3, no. 380-Cidade Universitária; 05508-010 São Paulo SP, Brasil
| | - Miguel A. D. Gonçalves
- LSRE - Instituto Politécnico de Bragança; Quinta de Santa Apolônia; 5300 Bragança Portugal
| | - Virgínia D. Pinto
- LSRE - Instituto Politécnico de Bragança; Quinta de Santa Apolônia; 5300 Bragança Portugal
| | - Rolando C. S. Dias
- LSRE - Instituto Politécnico de Bragança; Quinta de Santa Apolônia; 5300 Bragança Portugal
| | - Mário Rui P. F. N. Costa
- LSRE - Faculdade de Engenharia da Universidade do Porto; Rua Roberto Frias s/n 4200-456 Porto Portugal
| | - Reinaldo Giudici
- Escola Politécnica da Universidade de São Paulo; Departamento de Engenharia Química. Av. Prof. Luciano Gualberto; travessa 3, no. 380-Cidade Universitária; 05508-010 São Paulo SP, Brasil
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Nikitin AN, Wulkow M, Schütte C. Modeling of Free Radical Styrene/Divinylbenzene Copolymerization with the Numerical Fractionation Technique. MACROMOL THEOR SIMUL 2013. [DOI: 10.1002/mats.201300125] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Anatoly N. Nikitin
- Freie Universität Berlin, Department of Mathematics and Computer Science; Mathematics Institute; Arnimallee 6 14195 Berlin Germany
- Institute on Laser and Information Technologies; Svyatoozerskaya 1, Shatura Moscow Region 140700 Russia
| | | | - Christof Schütte
- Freie Universität Berlin, Department of Mathematics and Computer Science; Mathematics Institute; Arnimallee 6 14195 Berlin Germany
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Aguiar LG, Gonçalves MAD, Pinto VD, Dias RCS, Costa MRPFN, Giudici R. Development of Cyclic Propagation Kinetics for Modeling the Nitroxide-mediated Radical Copolymerization of Styrene-Divinylbenzene. MACROMOL REACT ENG 2013. [DOI: 10.1002/mren.201300105] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Leandro G. Aguiar
- Escola Politécnica da Universidade de São Paulo; Departamento de Engenharia Química. Av. Prof. Luciano Gualberto; travessa 3, No. 380 05508-010-São Paulo SP, Brasil USA
| | - Miguel A. D. Gonçalves
- LSRE - Instituto Politécnico de Bragança; Quinta de Santa Apolônia; 5300 Bragança Portugal
| | - Virgínia D. Pinto
- LSRE - Instituto Politécnico de Bragança; Quinta de Santa Apolônia; 5300 Bragança Portugal
| | - Rolando C. S. Dias
- LSRE - Instituto Politécnico de Bragança; Quinta de Santa Apolônia; 5300 Bragança Portugal
| | - Mário Rui P. F. N. Costa
- LSRE - Faculdade de Engenharia da Universidade do Porto; Rua Roberto Frias s/n; 4200-456 Porto Portugal
| | - Reinaldo Giudici
- Escola Politécnica da Universidade de São Paulo; Departamento de Engenharia Química. Av. Prof. Luciano Gualberto; travessa 3, No. 380 05508-010-São Paulo SP, Brasil USA
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Kryven I, Berkenbos A, Melo P, Kim DM, Iedema PD. Modeling Crosslinking Polymerization in Batch and Continuous Reactors. MACROMOL REACT ENG 2013. [DOI: 10.1002/mren.201200073] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Hernández-Ortiz JC, Vivaldo-Lima E, Penlidis A. Modeling of Network Formation in Nitroxide-Mediated Radical Copolymerization of Vinyl/Divinyl Monomers Using a Multifunctional Polymer Molecule Approach. MACROMOL THEOR SIMUL 2012. [DOI: 10.1002/mats.201100091] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gonçalves MAD, Pinto VD, Dias RCS, Costa MRPFN. Modeling Studies on the Synthesis of Superabsorbent Hydrogels Using Population Balance Equations. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.201000151] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Gonçalves MAD, Pinto VD, Dias RCS, Costa MRPFN. FTIR-ATR Monitoring and SEC/RI/MALLS Characterization of ATRP Synthesized Hyperbranched Polyacrylates. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/masy.201051031] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Dias RCS, Costa MRPFN. Branching and Crosslinking in Coordination Terpolymerizations. MACROMOL REACT ENG 2007. [DOI: 10.1002/mren.200700003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Dias RC, Costa MRP. A general kinetic method to predict sequence length distributions for non-linear irreversible multicomponent polymerizations. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.07.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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