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Bioplastics01:27

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Fully Bio-Based Polymer Composites: Preparation, Characterization, and LCD 3D Printing.

Giovanna Colucci1,2, Francesca Sacchi1,2, Federica Bondioli1,2

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|May 11, 2024
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Summary

Novel bio-based composites were created using agro-waste fillers and acrylate epoxidized soybean oil (AESO) resin for 3D printing. These materials exhibit tunable mechanical properties, suitable for applications like prostheses.

Keywords:
3D printingacrylate epoxidized soybean oilbio-based polymer compositesbiofillersliquid crystal display

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Additive Manufacturing

Background:

  • Development of sustainable and advanced materials is crucial for reducing environmental impact.
  • Agro-waste valorization offers a promising route to create value-added products.
  • 3D printing enables the fabrication of complex geometries with tailored properties.

Purpose of the Study:

  • To prepare novel bio-based composites using agro-waste fillers and acrylate epoxidized soybean oil (AESO) resin.
  • To investigate the printability and thermo-mechanical properties of these composites fabricated via liquid crystal display (LCD) 3D printing.
  • To explore the potential of these tunable composites for biomedical applications.

Main Methods:

  • Formulation of photocurable resins with varying reactive diluents (iso-bornyl methacrylate - IBOMA, tetrahydrofurfuryl acrylate - THFA).
  • Incorporation of corn (GTF) and wine (WPL-CF) by-product derived fillers into AESO-based formulations.
  • Fabrication of bio-based objects using LCD 3D printing, followed by characterization of print accuracy and layer adhesion.
  • Assessment of thermo-mechanical and mechanical properties using Thermogravimetric Analysis (TGA), Dynamic Mechanical Analysis (DMA), and tensile testing.

Main Results:

  • Successful 3D printing of bio-based objects with good accuracy, layer adhesion, and detail.
  • Addition of agro-waste fillers significantly enhanced elastic modulus, tensile strength, and glass transition temperature (Tg) for IBOMA-containing systems.
  • THFA-containing systems showed improved flexibility in the rubbery region.
  • AESO-based polymers exhibited tunable properties, ranging from rigid to flexible, based on diluent and filler choice.

Conclusions:

  • Agro-waste derived fillers can be effectively incorporated into AESO resin for 3D printing applications.
  • The developed bio-based composites demonstrate tunable mechanical properties, offering a sustainable alternative to conventional materials.
  • These findings support the potential use of these advanced composites in biomedical fields, such as for fabricating prostheses.