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Fengler C, Spange S, Sommer M, Wilhelm M. Synthesis of Superabsorbent Poly(vinylamine) Core–Shell Particles Monitored by Time-Domain NMR. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c02008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christian Fengler
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstr. 18, 76131 Karlsruhe, Germany
| | - Stefan Spange
- Institute for Chemistry, Polymer Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Michael Sommer
- Institute for Chemistry, Polymer Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Manfred Wilhelm
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstr. 18, 76131 Karlsruhe, Germany
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Sütekin SD, Demirci S, Kurt SB, Güven O, Sahiner N. Tunable fluorescent and antimicrobial properties of poly(vinyl amine) affected by the acidic or basic hydrolysis of poly(N‐vinylformamide). J Appl Polym Sci 2021. [DOI: 10.1002/app.51234] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Sahin Demirci
- Faculty of Science and Arts, Department of Chemistry Canakkale Onsekiz Mart University Canakkale Turkey
- Nanoscience and Technology Research and Application Center (NANORAC) Canakkale Onsekiz Mart University Canakkale Turkey
| | - Saliha B. Kurt
- Faculty of Science and Arts, Department of Chemistry Canakkale Onsekiz Mart University Canakkale Turkey
| | - Olgun Güven
- Department of Chemistry Hacettepe University Ankara Turkey
| | - Nurettin Sahiner
- Faculty of Science and Arts, Department of Chemistry Canakkale Onsekiz Mart University Canakkale Turkey
- Nanoscience and Technology Research and Application Center (NANORAC) Canakkale Onsekiz Mart University Canakkale Turkey
- Department of Chemical and Biomolecular Engineering University of South Florida Tampa Florida USA
- Department of Ophthalmology, Morsani College of Medicine University of South Florida Tampa Florida USA
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Uhlig T, Fengler C, Seifert A, Taubert F, Kaßner L, Hähnle HJ, Hamers C, Wilhelm M, Spange S, Sommer M. Reversible and Stable Hemiaminal Hydrogels from Polyvinylamine and Highly Reactive and Selective Bis( N-acylpiperidone)s. ACS Macro Lett 2021; 10:389-394. [PMID: 35549062 DOI: 10.1021/acsmacrolett.0c00904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Water-soluble bis(N-acylpiperidone)s with aldehyde-like reactivity are reported to react rapidly with polyvinylamine at room temperature, providing unprecedented clean reaction products. Unlike most amine/ketone reactions that result in arbitrary mixtures of imines, aminals, hemiaminals, or hydrates, in the present study hemiaminals, aminals, or hemiaminal/aminal mixtures are exclusively found. Detailed NMR spectroscopy of solutions, gels, and solids, aided by model reactions, reveals that the hemiaminal/aminal ratio depends on pH, water content, and cross-linking density. Network formation is fully reversible upon changes in pH, with the resulting moduli from rheology spanning almost 3 orders of magnitude. The self-healing ability of the system is probed by rheology as well, demonstrating maintained material properties of fractured and healed samples. The unusually clean, fast, and reversible chemistry highlights bispiperidones as a class of efficient building blocks with unprecedented possibilities in dynamic covalent chemistry.
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Affiliation(s)
- Tina Uhlig
- Institute for Chemistry, Polymer Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Christian Fengler
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstraße 18, 76128 Karlsruhe, Germany
| | - Andreas Seifert
- Institute for Chemistry, Polymer Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Florian Taubert
- Institute for Chemistry, Polymer Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Lysann Kaßner
- Institute for Chemistry, Polymer Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | | | - Christoph Hamers
- BASF SE Ludwigshafen, Bosch-Straße 38, 67056 Ludwigshafen, Germany
| | - Manfred Wilhelm
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstraße 18, 76128 Karlsruhe, Germany
| | - Stefan Spange
- Institute for Chemistry, Polymer Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Michael Sommer
- Institute for Chemistry, Polymer Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
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