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  Pickering emulgels reinforced with host–guest supramolecular inclusion complexes for high fidelity direct ink writing

Pang, B., Ajdary, R., Antonietti, M., Rojas, O., & Filonenko, S. (2022). Pickering emulgels reinforced with host–guest supramolecular inclusion complexes for high fidelity direct ink writing. Materials Horizons, 9(2), 835-840. doi:10.1039/d1mh01741a.

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 Creators:
Pang, Bo1, Author              
Ajdary, Rubina, Author
Antonietti, Markus2, Author              
Rojas, Orlando, Author
Filonenko, Svitlana1, Author              
Affiliations:
1Svitlana Filonenko, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_3158261              
2Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

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 Abstract: Direct ink writing (DIW) of Pickering emulsions offers great potential for constructing on-demand objects. However, the rheological properties of fluid emulsions greatly undermines the shape fidelity and structural integrity of 3D-printed structures. We solve here these challenges and realize a new route towards complex constructs for actual deployment. A dynamic, supramolecular host–guest hydrogel based on poly(ethylene glycol) and α-cyclodextrin was synthesized in the continuous phase of cellulose nanocrystal-stabilized Pickering emulsions. The storage modulus of the obtained emulgels could reach up to ∼113 kPa, while being shear thinning and yielding precise printability. Diverse complex architectures were possible with high shape fidelity and structural integrity. The printed objects, for example a double-wall cylinder with 75 layers, demonstrated excellent dimensional stability (shrinkage of 7 ± 2% after freeze-drying). With the merits of a simple fabrication process and the high biocompatibility of all the components, the concept of dynamic supramolecular hydrogel-reinforced emulgels represent a potentially versatile route to construct new materials and structures VIA DIW for use in bioproducts and biomedical devices.

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Language(s): eng - English
 Dates: 2021-12-142022
 Publication Status: Published in print
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 Identifiers: DOI: 10.1039/d1mh01741a
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Title: Materials Horizons
  Abbreviation : Mater. Horiz.
Source Genre: Journal
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Publ. Info: Cambridge : Royal Society of Chemistry
Pages: - Volume / Issue: 9 (2) Sequence Number: - Start / End Page: 835 - 840 Identifier: ISSN: 2051-6347