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Ultrafast Digital Printing toward 4D Shape Changing Materials.

Limei Huang¹, Ruiqi Jiang², Jingjun Wu¹

¹State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.

Advanced Materials (Deerfield Beach, Fla.)

|December 10, 2016

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Ultrafast 4D printing (<30 s) using visible-light-triggered polymerization creates 3D structures from 2D polymer films by controlling stress distribution. This novel method significantly accelerates the 4D printing process, overcoming typical speed limitations.

Area of Science:

Polymer Science
Materials Science
Additive Manufacturing

Background:

Traditional 4D printing methods are often limited by slow fabrication speeds.
Responsive polymers offer dynamic shape-changing capabilities crucial for advanced applications.

Purpose of the Study:

To develop an ultrafast 4D printing technique for responsive polymers.
To demonstrate a novel approach for rapid 3D structure formation from 2D polymer films.

Main Methods:

Utilizing visible-light-triggered polymerization of commercial monomers.
Digitally programming stress distribution within a 2D polymer film during printing.
Inducing 3D shape transformation by releasing programmed stress post-printing.

Main Results:

Keywords:

3D printing responsive hydrogels shape changing polymers

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Achieved printing speeds under 30 seconds for responsive polymer structures.
Successfully converted 2D printed films into complex 3D shapes.
Demonstrated the potential for incorporating an additional dimension by selecting specific printing precursors.

Conclusions:

The developed ultrafast 4D printing process significantly enhances fabrication speed.
This method overcomes critical speed limitations inherent in conventional 3D and 4D printing technologies.
The technique offers a promising pathway for rapid manufacturing of complex, shape-changing polymer structures.