Projects per year
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.
Original language | English |
---|---|
Pages (from-to) | 835-840 |
Number of pages | 6 |
Journal | Materials Horizons |
Volume | 9 |
Issue number | 2 |
Early online date | 14 Dec 2021 |
DOIs | |
Publication status | Published - 7 Feb 2022 |
MoE publication type | A1 Journal article-refereed |
Fingerprint
Dive into the research topics of 'Pickering emulgels reinforced with host-guest supramolecular inclusion complexes for high fidelity direct ink writing'. Together they form a unique fingerprint.Projects
- 2 Finished
-
BioELCell: Bioproducts Engineered from Lignocelluloses: from plants and upcycling to next generation materials
Rojas, O. (Principal investigator)
30/07/2018 → 31/07/2023
Project: EU: ERC grants
-
3D-manufacturing of novel biomaterials
Rojas, O. (Principal investigator)
01/01/2017 → 30/04/2021
Project: Academy of Finland: Other research funding
Equipment
-
-
OtaNano - Nanomicroscopy Center
Seitsonen, J. (Manager) & Rissanen, A. (Other)
OtaNanoFacility/equipment: Facility