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Engel N, Hoffmann T, Behrendt F, Liebing P, Weber C, Gottschaldt M, Schubert US. Cryogels Based on Poly(2-oxazoline)s through Development of Bi- and Trifunctional Cross-Linkers Incorporating End Groups with Adjustable Stability. Macromolecules 2024; 57:2915-2927. [PMID: 38560346 PMCID: PMC10977347 DOI: 10.1021/acs.macromol.3c02030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 02/19/2024] [Accepted: 02/22/2024] [Indexed: 04/04/2024]
Abstract
1,4-Bis(iodomethyl)benzene and 1,3,5-tris(iodomethyl)benzene were used as initiators for the cationic ring-opening polymerization (CROP) of 2-ethyl-2-oxazoline (EtOx) and its copolymerization with tert-butyl (3-(4,5-dihydrooxazol-2-yl)propyl)carbamate (BocOx) or methyl 3-(4,5-dihydrooxazol-2-yl)propanoate (MestOx). Kinetic studies confirmed the applicability of these initiators. Termination with suitable nucleophiles resulted in two- and three-armed cross-linkers featuring acrylate, methacrylate, piperazine-acrylamide, and piperazine-methacrylamide as polymerizable ω-end groups. Matrix-assisted laser desorption/ionization mass spectrometry and nuclear magnetic resonance (NMR) spectroscopy confirmed the successful attachment of the respective ω-end groups at all initiation sites for every prepared cross-linkers. Except for acrylate, each ω-end group remained stable during deprotection of BocOx containing cross-linkers. The cryogels were prepared using EtOx-based cross-linkers, as confirmed by solid-state NMR spectroscopy, scanning electron microscopy, and thermogravimetric analysis. Stability tests revealed a complete dissolution of the acrylate-containing gels at pH = 14, whereas the piperazine-acrylamide-based cryogels featured excellent hydrolytic stability.
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Affiliation(s)
- Nora Engel
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University at Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich
Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Tim Hoffmann
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University at Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich
Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Florian Behrendt
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University at Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich
Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Phil Liebing
- Institute
of Inorganic and Analytical Chemistry (IAAC), Friedrich Schiller University at Jena, Humboldtstraße 8, 07743 Jena, Germany
| | - Christine Weber
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University at Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich
Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Michael Gottschaldt
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University at Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich
Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Ulrich S. Schubert
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University at Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich
Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
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Ardhani R, Suraya T, Wulanjati MP, Ana ID, Rühe J, Pidhatika B. Photoreactive polymer and C,H-insertion reaction to tailor the properties of CHA/gelatin-based scaffold. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2022. [DOI: 10.1080/1023666x.2022.2076012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Retno Ardhani
- Department of Dental Biomedical Sciences, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Tiyastiti Suraya
- Center of Standardization and Industrial Services for Leather, Rubber, and Plastics, Ministry of Industry, Yogyakarta, Indonesia
| | - Martha Purnami Wulanjati
- Research Center for Food Technology and Processing - National Research and Innovation Agency Republic of Indonesia (PRTPP - BRIN), Yogyakarta, Indonesia
| | - Ika Dewi Ana
- Department of Dental Biomedical Sciences, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Jürgen Rühe
- Department of Microsystems Engineering – IMTEK, Freiburg Institute for Interactive Materials and Bioinspired Technologies (FIT), DFG Cluster of Excellence livMatS, University of Freiburg, Freiburg, Germany
| | - Bidhari Pidhatika
- Center of Standardization and Industrial Services for Leather, Rubber, and Plastics, Ministry of Industry, Yogyakarta, Indonesia
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Deng Y, Sun J, Ni X, Yu B. Tribological properties of hierarchical structure artificial joints with poly acrylic acid (AA) - poly acrylamide (AAm) hydrogel and Ti6Al4V substrate. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02143-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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