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3D Printed Porous Cellulose Nanocomposite Hydrogel Scaffolds
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3D-Printable Bioactivated Nanocellulose-Alginate Hydrogels.

Jenni Leppiniemi1,2, Panu Lahtinen3, Antti Paajanen3

  • 1Faculty of Medicine and Life Sciences and BioMediTech, University of Tampere , Lääkärinkatu 1, 33520 Tampere, Finland.

ACS Applied Materials & Interfaces
|June 10, 2017
PubMed
Summary

A novel nanocellulose-alginate hydrogel is 3D printable and biofunctionalized for biomedical applications. This advanced material shows promise for tissue engineering, wound dressings, and wearable sensors.

Keywords:
3D printingalginateavidinhydrogelnanocellulosewound healing

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Area of Science:

  • Biomaterials Science
  • Materials Engineering
  • Biotechnology

Background:

  • Developing advanced hydrogels for 3D printing is crucial for creating complex biomedical devices.
  • Nanocellulose and alginate offer unique properties for hydrogel formulation.
  • Biofunctionalization strategies are needed to impart specific biological functionalities.

Purpose of the Study:

  • To develop and characterize a 3D-printable nanocellulose-alginate hydrogel.
  • To biofunctionalize the hydrogel for targeted molecular attachment.
  • To evaluate the hydrogel's potential in biomedical applications.

Main Methods:

  • Hydrogel composition optimization using material characterization and 3D printing experiments.
  • Computational fluid dynamics simulations to study printing behavior.
  • Covalent coupling of enhanced avidin protein to cellulose nanofibrils for biofunctionalization.
  • Ionic cross-linking with calcium ions.
  • Confocal microscopy to visualize attached biotinylated molecules.

Main Results:

  • Optimized nanocellulose-alginate hydrogel demonstrated suitability for 3D printing.
  • The hydrogel exhibited good mechanical properties and tissue compatibility.
  • Successful biofunctionalization via avidin-biotin conjugation was confirmed.
  • Water absorption in moist conditions suggests potential for wound dressings.

Conclusions:

  • The developed 3D-printable, bioactivated hydrogel serves as a versatile platform.
  • Potential applications include biomedical devices, wearable sensors, and drug delivery systems.
  • This material advances the field of functional biomaterials for regenerative medicine.