Aqueous and Non‐Aqueous Synthesis of 2‐(Dimethylamino)ethyl Methacrylate (Co)Polymers by Solution Radical Polymerization: Modeling and Experimental Study.
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| Title: | Aqueous and Non‐Aqueous Synthesis of 2‐(Dimethylamino)ethyl Methacrylate (Co)Polymers by Solution Radical Polymerization: Modeling and Experimental Study. |
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| Authors: | Ajogbeje, Opeyemi J.1 (AUTHOR), Pishnamazi, Mohammad2 (AUTHOR), Lacík, Igor2 (AUTHOR), Hutchinson, Robin A.1 (AUTHOR) robin.hutchinson@queensu.ca |
| Source: | Macromolecular Reaction Engineering. Jun2025, Vol. 19 Issue 3, p1-16. 16p. |
| Subjects: | Polymerization kinetics, Addition polymerization, Copolymerization, Solvolysis, Methyl methacrylate, Methacrylic acid, Nuclear magnetic resonance spectroscopy, Prediction models |
| Abstract: | The radical polymerization kinetics of 2‐(dimethylamino)ethyl methacrylate (DMAEMA) is explored in dimethyl sulfoxide, ethanol (EtOH), ethanol‐water (EtOH/H2O), and water. In situ nuclear magnetic resonance (NMR) spectroscopy is used to study both solvolysis and polymerization kinetics. Hydrolysis of nonionized DMAEMA occurs in H2O and ethanolysis in EtOH/H2O mixtures to form both methacrylic acid (MAA) and ethyl methacrylate (EMA), with the presence of water increasing the rate of ethanolysis in the mixed solvent. Although some solvolysis occurred in EtOH and EtOH/H2O containing 25 wt.% H2O, the rates are sufficiently low that essentially poly(DMAEMA) homopolymer is synthesized, unlike the DMAEMA/MAA copolymer formed in water and the DMAEMA/MAA/EMA terpolymer formed in water‐rich EtOH/H2O. A model is constructed to represent the polymerization of nonionized DMAEMA in solution, with the experimental results used to estimate key rate coefficients. The model predictions show good agreement with the experimental data on monomer conversion, average molar masses, and molar mass distributions. Similarly, the rate coefficients for polymerization of ionized DMAEMA are estimated based on experiments conducted in water at pH 1 and 4. The understanding gained from these studies is combined into a comprehensive mechanistic model to describe the polymerization of partially‐ionized DMAEMA in the presence of hydrolysis. [ABSTRACT FROM AUTHOR] |
| Copyright of Macromolecular Reaction Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 187571923 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Aqueous and Non‐Aqueous Synthesis of 2‐(Dimethylamino)ethyl Methacrylate (Co)Polymers by Solution Radical Polymerization: Modeling and Experimental Study. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ajogbeje%2C+Opeyemi+J%2E%22">Ajogbeje, Opeyemi J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pishnamazi%2C+Mohammad%22">Pishnamazi, Mohammad</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lacík%2C+Igor%22">Lacík, Igor</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hutchinson%2C+Robin+A%2E%22">Hutchinson, Robin A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> robin.hutchinson@queensu.ca</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Macromolecular+Reaction+Engineering%22">Macromolecular Reaction Engineering</searchLink>. Jun2025, Vol. 19 Issue 3, p1-16. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Polymerization+kinetics%22">Polymerization kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Addition+polymerization%22">Addition polymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Copolymerization%22">Copolymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Solvolysis%22">Solvolysis</searchLink><br /><searchLink fieldCode="DE" term="%22Methyl+methacrylate%22">Methyl methacrylate</searchLink><br /><searchLink fieldCode="DE" term="%22Methacrylic+acid%22">Methacrylic acid</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+magnetic+resonance+spectroscopy%22">Nuclear magnetic resonance spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Prediction+models%22">Prediction models</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The radical polymerization kinetics of 2‐(dimethylamino)ethyl methacrylate (DMAEMA) is explored in dimethyl sulfoxide, ethanol (EtOH), ethanol‐water (EtOH/H2O), and water. In situ nuclear magnetic resonance (NMR) spectroscopy is used to study both solvolysis and polymerization kinetics. Hydrolysis of nonionized DMAEMA occurs in H2O and ethanolysis in EtOH/H2O mixtures to form both methacrylic acid (MAA) and ethyl methacrylate (EMA), with the presence of water increasing the rate of ethanolysis in the mixed solvent. Although some solvolysis occurred in EtOH and EtOH/H2O containing 25 wt.% H2O, the rates are sufficiently low that essentially poly(DMAEMA) homopolymer is synthesized, unlike the DMAEMA/MAA copolymer formed in water and the DMAEMA/MAA/EMA terpolymer formed in water‐rich EtOH/H2O. A model is constructed to represent the polymerization of nonionized DMAEMA in solution, with the experimental results used to estimate key rate coefficients. The model predictions show good agreement with the experimental data on monomer conversion, average molar masses, and molar mass distributions. Similarly, the rate coefficients for polymerization of ionized DMAEMA are estimated based on experiments conducted in water at pH 1 and 4. The understanding gained from these studies is combined into a comprehensive mechanistic model to describe the polymerization of partially‐ionized DMAEMA in the presence of hydrolysis. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Macromolecular Reaction Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/mren.202400053 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 1 Subjects: – SubjectFull: Polymerization kinetics Type: general – SubjectFull: Addition polymerization Type: general – SubjectFull: Copolymerization Type: general – SubjectFull: Solvolysis Type: general – SubjectFull: Methyl methacrylate Type: general – SubjectFull: Methacrylic acid Type: general – SubjectFull: Nuclear magnetic resonance spectroscopy Type: general – SubjectFull: Prediction models Type: general Titles: – TitleFull: Aqueous and Non‐Aqueous Synthesis of 2‐(Dimethylamino)ethyl Methacrylate (Co)Polymers by Solution Radical Polymerization: Modeling and Experimental Study. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ajogbeje, Opeyemi J. – PersonEntity: Name: NameFull: Pishnamazi, Mohammad – PersonEntity: Name: NameFull: Lacík, Igor – PersonEntity: Name: NameFull: Hutchinson, Robin A. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 1862832X Numbering: – Type: volume Value: 19 – Type: issue Value: 3 Titles: – TitleFull: Macromolecular Reaction Engineering Type: main |
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