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  Tough High Modulus Hydrogels Derived from Carbon-Nitride via an Ethylene Glycol Co-solvent Route

Kumru, B., Molinari, V., Shalom, M., Antonietti, M., & Schmidt, B. V. K. J. (2018). Tough High Modulus Hydrogels Derived from Carbon-Nitride via an Ethylene Glycol Co-solvent Route. Soft Matter, 14(14), 2655-2664. doi:10.1039/C8SM00232K.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-D45A-C Version Permalink: http://hdl.handle.net/21.11116/0000-0005-DD27-7
Genre: Journal Article

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 Creators:
Kumru, Baris1, Author              
Molinari, Valerio2, Author              
Shalom, Menny3, Author              
Antonietti, Markus4, Author              
Schmidt, Bernhard V. K. J.1, Author              
Affiliations:
1Bernhard Schmidt, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2149676              
2Valerio Molinari, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2385693              
3Menny Shalom, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2205635              
4Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

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Free keywords: Open Access
 Abstract: High concentration formulations of graphitic carbon nitride (g-CN) are utilized as photoinitiator and reinforcer for hydrogels. In order to integrate significant amounts of g-CN, ethylene glycol (EG) is employed as a co-solvent for the gel formation, which enables stable dispersion of up to 4 wt.% g-CN. Afterwards, EG can be removed easily via solvent exchange to afford pure hydrogels. The diverse gels possess remarkably high storage moduli (up to 650 kPA for gels and 720 kPA for hydrogels) and compression moduli (up to 9.45 MPa for 4 wt.% g-CN EG gel and 3.45 MPa for 4 wt.% g-CN hydrogel). Full recovery without energy loss is observed for at least 20 cycles. Moreover, gel formation can be performed in a spatially controlled way utilizing photomasks with desired shapes. Therefore, the suggested novel method enables formation of hybrid gels by optical lithography with outstanding mechanical properties very similar to natural cartilage and tendon, and opens up opportunities for future applications in additive manufacturing of biomedical implants and coating materials.

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 Dates: 2018-03-132018-04-14
 Publication Status: Published in print
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 Identifiers: DOI: 10.1039/C8SM00232K
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Title: Soft Matter
  Abbreviation : Soft Matter
Source Genre: Journal
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Publ. Info: Cambridge, UK : Royal Society of Chemistry
Pages: - Volume / Issue: 14 (14) Sequence Number: - Start / End Page: 2655 - 2664 Identifier: ISSN: 1744-683X