Thermoset Shape‐Memory Polyurethane with Intrinsic Plasticity Enabled by Transcarbamoylation
State Key Laboratory of Chemical Engineering · Zhejiang University
Abstract
Thermoset polymers are known for their superior thermomechanical properties, but the chemical crosslinking typically leads to intractability. This is reflected in the great differences between thermoset and thermoplastic shape-memory polymers; the former exhibit a robust shape memory but are not capable of redefining the permanent shape. Contrary to current knowledge, we reveal here that a classical thermoset shape-memory polyurethane is readily capable of permanent reshaping (plasticity) after a topological network rearrangement that is induced by transcarbamoylation. By employing the Jianzhi technique (also known as kirigami), unexpected shape-shifting versatility was observed for this otherwise classical…
Citation impact
- FWCI
- 41.02
- Percentile
- 100%
- References
- 30
Authors
5- NZNing Zheng
State Key Laboratory of Chemical Engineering, Zhejiang University
- ZFZizheng Fang
State Key Laboratory of Chemical Engineering, Zhejiang University
- WZWeike Zou
State Key Laboratory of Chemical Engineering, Zhejiang University
- QZQian ZhaoCorresponding
State Key Laboratory of Chemical Engineering, Zhejiang University
- TXTao XieCorresponding
State Key Laboratory of Chemical Engineering, Zhejiang University
Topics & keywords
- Thermosetting polymer
- Shape-memory polymer
- Polyurethane
- Shape-memory alloy
- Materials science
- Polymer
- Thermoplastic
- Moiety