Closed‐Loop Recyclable and Extrusion Reprocessable Thermosets Enabled by Guanylthiourea Structure
Zhen Yu, Yanlin Liu, Xiangyu Zhou, Yajin Fang, Zhaobin Tang, Jin Zhu, Junping Zhang · 2024
Read Closed‐Loop Recyclable and Extrusion Reprocessable Thermosets Enabled by Guanylthiourea Structure by Zhen Yu, Yanlin Liu, Xiangyu Zhou, Yajin Fang, Zhaobin Tang, Jin Zhu, Junping Zhang (2024) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-11672245.txt.
Description
Zhen Yu and six co-authors make a hard plastic that can be recycled in a loop, in a 2024 paper. Thermosets, plastics set hard by cross-links, give strength but resist rework, so most end as waste. Their new network is cross-linked by a hybrid bond that mixes two nitrogen-rich groups. The bond can swap partners by two routes at once, helped by loose hydrogen bonds.
The network relaxes fast, so it can be reshaped by steady extrusion, not just by hot pressing. A five-minute hot press at a set heat and pressure also reworks it. Oddly, one part of the bond oxidizes in a way that keeps or even raises strength after recycling. The same swaps allow full chemical recycling, and tests on carbon fiber composites look promising.
Catalog record
| CREATOR | Zhen Yu, Yanlin Liu, Xiangyu Zhou, Yajin Fang, Zhaobin Tang, Jin Zhu, Junping Zhang |
|---|---|
| YEAR | 2024 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 22 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |