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3D printing of dynamic covalent polymer network with on-demand geometric and mechanical reprogrammability

Engineering and Technology

3D printing of dynamic covalent polymer network with on-demand geometric and mechanical reprogrammability

Z. Fang, Y. Shi, et al.

Discover a groundbreaking 3D photo-printable dynamic covalent network that pioneers reprogramming of geometry and mechanical properties after printing. Conducted by a team of experts, this research showcases the potential for multiple products from a single print using advanced bond exchange reactions.

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Playback language: English
Abstract
This paper reports a 3D photo-printable dynamic covalent network that allows for independent reprogramming of geometry and mechanical properties after printing. The network contains hindered urea bonds and pendant hydroxyl groups, enabling two controllable bond exchange reactions. Homolytic exchange reconfigures shape without affecting mechanical properties, while transformation of hindered urea bonds into urethane bonds tailors mechanical properties. This on-demand reprogrammability allows multiple products from a single printing step.
Publisher
Nature Communications
Published On
Mar 10, 2023
Authors
Zizheng Fang, Yunpeng Shi, Hongfeng Mu, Runzhi Lu, Jingjun Wu, Tao Xie
Tags
3D printing
dynamic covalent networks
reprogrammability
mechanical properties
bond exchange
materials science

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