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Microwave-assisted Functionalization of Polyethylene glycol and On-resin Peptides for Use in Chain Polymerizations and Hydrogel Formation
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Light Processable Starch Hydrogels.

Camilla Noè1, Chiara Tonda-Turo1, Annalisa Chiappone1

  • 1Politecnico di Torino, Dipartimento di Scienza Applicata e Tecnologia C.so Duca Degli Abruzzi 24, 10129 Torino, Italy.

Polymers
|June 21, 2020
PubMed
Summary
This summary is machine-generated.

Maize starch was modified for light-based 3D printing, creating biocompatible hydrogels. These tunable starch hydrogels show promise for tissue engineering and cell carrier applications.

Keywords:
3D printingUV curingdigital light processinghydrogelstarch

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Tissue Engineering

Background:

  • Developing light-processable hydrogels is crucial for advanced fabrication techniques like 3D printing.
  • Starch, a renewable and abundant biopolymer, offers potential as a base material for novel biomaterials.

Purpose of the Study:

  • To fabricate light-processable hydrogels from maize starch for 3D printing applications.
  • To evaluate the photocuring reactivity, mechanical properties, and biocompatibility of the synthesized starch hydrogels.

Main Methods:

  • Maize starch was gelatinized and methacrylated using methacrylic anhydride.
  • Photocuring reactivity and 3D printability were assessed using digital light processing (DLP) with lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) as a photo-initiator.
  • Hydrogel properties were characterized via photo-rheology, rheology, compressive tests, and swelling experiments.

Main Results:

  • Methacrylated starch hydrogels exhibited good mechanical properties and biocompatibility when cured from aqueous solutions.
  • Hydrogel properties, including compressive stiffness (13-20 kPa), were tunable by adjusting starch concentration.
  • High cell viability was confirmed with human fibroblast cells, indicating no adverse effects from the fabrication process.

Conclusions:

  • Light-processable hydrogels can be successfully fabricated from maize starch using DLP 3D printing.
  • The tunable mechanical properties and biocompatibility make these starch-based hydrogels suitable for tissue engineering and cell carrier applications.
  • This study demonstrates a promising route for utilizing renewable starch resources in advanced biomaterial development.