4.7 Article

Hydrogel Polyester Scaffolds via Direct-Ink-Writing of Ad Hoc Designed Photocurable Macromonomer

Journal

POLYMERS
Volume 14, Issue 4, Pages -

Publisher

MDPI
DOI: 10.3390/polym14040711

Keywords

additive manufacturing; degradable polyesters; soft scaffolds; hydrophilic materials

Funding

  1. Swedish Foundation for Strategic Research [RMA15-0010]
  2. Swedish Research Council
  3. Swedish Research Council for Sustainable Development (FORMAS) [2020-00910]
  4. [2017-04550]
  5. [2019-05232]
  6. [2017-04550, 2019-05232]
  7. Formas [2020-00910] Funding Source: Formas

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This article introduces the development of degradable ink for 3D printing. The ink is designed for direct-ink-writing technology, with suitable viscosity and rheological properties, and can be used to manufacture soft 3D scaffolds with no cytotoxicity and high hydration capacity.
Synthetic, degradable macromonomers have been developed to serve as ink for 3D printing technologies based on direct-ink-writing. The macromonomers are purposely designed to be cross-linkable under the radical mechanism, to impart hydrophilicity to the final material, and to have rheological properties matching the printer's requirements. The suitable viscosity enables the ink to be printed at room temperature, in absence of organic solvents, and to be cross-linked to manufacture soft 3D scaffolds that show no indirect cytotoxicity and have a hydration capacity of up to 100% their mass and a compressive modulus in the range of 0.4-2 MPa.

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