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A Novel Additive Manufacturing Method of Cellulose Gel.

Hossein Najaf Zadeh1,2, Daniel Bowles1, Tim Huber2,3

  • 1College of Engineering, University of Canterbury, Private Bag 4800, Christchurch 8020, New Zealand.

Materials (Basel, Switzerland)
|November 27, 2021
PubMed
Summary

Screen-additive manufacturing (SAM) enables waste-free production of intricate cellulose gel parts. This study optimized SAM for complex structures, demonstrating successful printing without support material.

Keywords:
3D printingadditive manufacturingcellulosegelhydrogelscreen additive manufacturingscreen printingstencil additive manufacturing

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Area of Science:

  • Materials Science
  • Additive Manufacturing
  • Biomaterials

Background:

  • Screen-additive manufacturing (SAM) offers a sustainable approach for fabricating complex structures.
  • Hydrogels, particularly cellulose-based ones, possess unique properties suitable for additive manufacturing.
  • Direct fabrication of hydrogels without support material remains a challenge.

Purpose of the Study:

  • To develop and optimize a SAM method for cellulose gel fabrication.
  • To assess the feasibility of printing complex-shaped cellulose gel structures using SAM.
  • To evaluate the performance of SAM for cellulose gel without requiring support material.

Main Methods:

  • Utilized screen-additive manufacturing (SAM) for cellulose gel fabrication.
  • Applied Design of Experiments (DoE) to optimize SAM parameters.
  • Investigated material properties like shear thinning and post-shearing gel structure formation.
  • Assessed layer adhesion and structural integrity of printed cellulose gel constructs.

Main Results:

  • Developed a SAM process for cellulose gel fabrication.
  • Optimized SAM settings for printing complex and micro-featured cellulose gel structures.
  • Successfully printed cellulose gel structures without the need for support material.
  • Demonstrated successful layer adhesion without delamination in successive printing.

Conclusions:

  • Cellulose gel is a viable material for direct screen-additive manufacturing.
  • Optimized SAM parameters enable the fabrication of intricate, unsupported cellulose gel structures.
  • This method holds potential for cost-effective and waste-free production of custom hydrogel devices.