| 초록 |
Driven by sharply growing global concerns, the demand for polymer recycling is increasing. The lack of processability of thermosets significantly limits their recycling because the simplest and most economical way to recycle polymers with the lowest carbon footprint is repairing/re-melting them into new products. Vitrimers with networked structure can relax stress and flow by triggering associative network exchanges with a maintained network density, exhibiting both thermoset and thermoplastic-like properties. However, the bond exchange chemistries for most vitrimers are thermally activated, meaning that a limited temperature range exists for vitrimers to behave as strong thermosets. From a practical perspective, a particularly useful material can be realized if it behaves as a thermoset until it needs to be recycled or repaired. To this end, in this presentation, an approach to spatiotemporally converting a thermoset to a heat-processable and self-healable vitrimer will be presented. |
