ABC-Type Triblock Copolyacrylamides via Copper-Mediated Reversible Deactivation Radical Polymerization
The aqueous Cu(0)-mediated reversible deactivation radical polymerization (RDRP) of triblock copolymers with two block sequences at 0.0 °C is reported herein. Well-defined triblock copolymers initiated from PHEAA or PDMA, containing (A) 2-hydroxyethyl acrylamide (HEAA), (B) N-isopropylacrylamide (NI...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/1/116 |
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| author | Fehaid M. Alsubaie Othman Y. Alothman Hassan Fouad Abdel-Hamid I. Mourad |
| author_facet | Fehaid M. Alsubaie Othman Y. Alothman Hassan Fouad Abdel-Hamid I. Mourad |
| author_sort | Fehaid M. Alsubaie |
| collection | DOAJ |
| description | The aqueous Cu(0)-mediated reversible deactivation radical polymerization (RDRP) of triblock copolymers with two block sequences at 0.0 °C is reported herein. Well-defined triblock copolymers initiated from PHEAA or PDMA, containing (A) 2-hydroxyethyl acrylamide (HEAA), (B) N-isopropylacrylamide (NIPAM) and (C) N, N-dimethylacrylamide (DMA), were synthesized. The ultrafast one-pot synthesis of sequence-controlled triblock copolymers via iterative sequential monomer addition after full conversion, without any purification steps throughout the monomer additions, was performed. The narrow dispersities of the triblock copolymers proved the high degree of end-group fidelity of the starting macroinitiator and the absence of any significant undesirable side reactions. Controlled chain length and extremely narrow molecular weight distributions (dispersity ~1.10) were achieved, and quantitative conversion was attained in as little as 52 min. The full disproportionation of CuBr in the presence of Me<sub>6</sub>TREN in water prior to both monomer and initiator addition was crucially exploited to produce a well-defined ABC-type triblock copolymer. In addition, the undesirable side reaction that could influence the living nature of the system was investigated. The ability to incorporate several functional monomers without affecting the living nature of the polymerization proves the versatility of this approach. |
| first_indexed | 2024-03-10T03:24:51Z |
| format | Article |
| id | doaj.art-2bad2a5b13c74f15afb0132516d2d509 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T03:24:51Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-2bad2a5b13c74f15afb0132516d2d5092023-11-23T12:10:06ZengMDPI AGPolymers2073-43602021-12-0114111610.3390/polym14010116ABC-Type Triblock Copolyacrylamides via Copper-Mediated Reversible Deactivation Radical PolymerizationFehaid M. Alsubaie0Othman Y. Alothman1Hassan Fouad2Abdel-Hamid I. Mourad3National Center for Chemical Catalysis Technology, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi ArabiaDepartment of Chemical Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaApplied Medical Science Department, Community College, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi ArabiaMechanical and Aerospace Engineering Department, College of Engineering, United Arab Emirate University, Al Ain P.O. Box 15551, United Arab EmiratesThe aqueous Cu(0)-mediated reversible deactivation radical polymerization (RDRP) of triblock copolymers with two block sequences at 0.0 °C is reported herein. Well-defined triblock copolymers initiated from PHEAA or PDMA, containing (A) 2-hydroxyethyl acrylamide (HEAA), (B) N-isopropylacrylamide (NIPAM) and (C) N, N-dimethylacrylamide (DMA), were synthesized. The ultrafast one-pot synthesis of sequence-controlled triblock copolymers via iterative sequential monomer addition after full conversion, without any purification steps throughout the monomer additions, was performed. The narrow dispersities of the triblock copolymers proved the high degree of end-group fidelity of the starting macroinitiator and the absence of any significant undesirable side reactions. Controlled chain length and extremely narrow molecular weight distributions (dispersity ~1.10) were achieved, and quantitative conversion was attained in as little as 52 min. The full disproportionation of CuBr in the presence of Me<sub>6</sub>TREN in water prior to both monomer and initiator addition was crucially exploited to produce a well-defined ABC-type triblock copolymer. In addition, the undesirable side reaction that could influence the living nature of the system was investigated. The ability to incorporate several functional monomers without affecting the living nature of the polymerization proves the versatility of this approach.https://www.mdpi.com/2073-4360/14/1/116triblock copolyacrylamidesmacroinitiatorcontrolled polymerizationradical polymerizationundesirable side reactiondispersity |
| spellingShingle | Fehaid M. Alsubaie Othman Y. Alothman Hassan Fouad Abdel-Hamid I. Mourad ABC-Type Triblock Copolyacrylamides via Copper-Mediated Reversible Deactivation Radical Polymerization Polymers triblock copolyacrylamides macroinitiator controlled polymerization radical polymerization undesirable side reaction dispersity |
| title | ABC-Type Triblock Copolyacrylamides via Copper-Mediated Reversible Deactivation Radical Polymerization |
| title_full | ABC-Type Triblock Copolyacrylamides via Copper-Mediated Reversible Deactivation Radical Polymerization |
| title_fullStr | ABC-Type Triblock Copolyacrylamides via Copper-Mediated Reversible Deactivation Radical Polymerization |
| title_full_unstemmed | ABC-Type Triblock Copolyacrylamides via Copper-Mediated Reversible Deactivation Radical Polymerization |
| title_short | ABC-Type Triblock Copolyacrylamides via Copper-Mediated Reversible Deactivation Radical Polymerization |
| title_sort | abc type triblock copolyacrylamides via copper mediated reversible deactivation radical polymerization |
| topic | triblock copolyacrylamides macroinitiator controlled polymerization radical polymerization undesirable side reaction dispersity |
| url | https://www.mdpi.com/2073-4360/14/1/116 |
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