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Direct Ink Write (DIW) 3D Printed Cellulose Nanocrystal Aerogel Structures
Vincent Chi-Fung Li1, Conner K Dunn2, Zhe Zhang1
1Renewable Bioproducts Institute at Georgia Institute of Technology, School of Chemical & Biomolecular Engineering, Atlanta, GA, 30318, USA.
Scientific Reports
|August 16, 2017
Summary
Direct ink write 3D printing enables the fabrication of cellulose nanocrystal (CNC) aerogels with controlled structures. This technique overcomes limitations of traditional methods, producing advanced CNC aerogels for diverse applications.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Nanotechnology
Background:
- Traditional methods for fabricating cellulosic aerogels often result in structural damage and shrinkage.
- Controlling the 3D architecture of aerogels is crucial for advanced applications.
- Cellulose nanocrystals (CNCs) offer sustainable, biocompatible, and biodegradable material properties.
Purpose of the Study:
- To develop a method for fabricating 3D cellulose nanocrystal (CNC) aerogels with controlled structures.
- To overcome the limitations of traditional aerogel processing.
- To explore the potential of 3D printed CNC aerogels in various applications.
Main Methods:
- Direct ink write (DIW) 3D printing of CNC-based inks.
- Freeze-drying of printed structures to form aerogels.
- Optimization of printing parameters such as CNC concentration and resolution.
Main Results:
- Successfully fabricated pure CNC aerogels with controlled 3D structures and pore architectures.
- Achieved minimal structural shrinkage and damage compared to traditional methods.
- Demonstrated the ability to print complex 3D structures and dual-pore scaffolds without support material.
- Showcased improved print quality with increased CNC concentration and printing resolution.
Conclusions:
- DIW 3D printing followed by freeze-drying is an effective technique for producing high-quality CNC aerogels.
- The developed method allows for precise control over aerogel architecture, enabling custom designs.
- 3D printed CNC aerogels hold significant promise for applications in tissue engineering, drug delivery, and packaging due to their tunable properties and sustainability.
