Photosensitive Hydrogel Formulation for 3D Printing

Example 5

An example of the composition of a liquid photoresponsive material optimized for volumetric additive manufacturing to produce soft hydrogel structure 15s is given below:

- stirring 0.1 wt. % of calcium sulphate in distilled water
- Adding 5 wt % of Polyethylene glycol diacrylate 20 kDa in solution prepared above
- Adding Lithium Phenyl(2,4,6-trimethylbenzoyl)phosphinate so that its concentration in the solution is 2.44 mol·m⁻³
- Mixing the solution
- Adding 1.2 Wt. % of sodium alginate

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US11872746B2. Photoresponsive materials for volumetric additive manufacturing (2024-01-16). Ecole Polytechnique Federale de Lausanne (EPFL) [CH]. Inventors: Paul Delrot [CH], Damien Loterie [CH], Christophe Moser [CH].

Patent 2024

Calcium sulphate Hydrogel Lithium Polyethylene glycol diacrylate Sodium alginate

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Variable analysis

independent variables

Concentration of calcium sulphate
Concentration of Polyethylene glycol diacrylate 20 kDa
Concentration of Lithium Phenyl(2,4,6-trimethylbenzoyl)phosphinate
Concentration of sodium alginate

dependent variables

Properties of the resulting soft hydrogel structure

control variables

Stirring
Mixing the solution

controls

No positive or negative controls were explicitly mentioned.

Annotations

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