Self-adaptive and large-area sprayable thermal management coatings for energy saving DOI Creative Commons
Peng Zhou, Gening Jiang, Yuyan Wang

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: April 22, 2025

Self-adaptive thermal management over large areas is highly attractive since single-mode radiative cooling materials lead to undesired overcooling. However, it remains a challenge that dual-mode switchable require artificial stimuli or additional energy for switching between heating and modes. Here, different from driven by energy, we propose an autonomously self-adaptive dual-modal coating with assembled micro-heterostructures can engender the multistage scattering of incident light. The resultant demonstrates 92% solar reflectivity 93% emissivity in hot condition. More significantly, reaches 60% visible light optical modulation, which attributed formation disruption conjugation region chromogenic molecules, prevent overcooling cold A thermal-switchable fabric further fabricated via large-area spraying processes, demonstrating 2.5 °C warmer condition 8.7 cooler compared white samples. highlights importance large-scale manufacturing temperature-adaptive materials, providing insights into application dynamic garment, camping, building other fields.

Language: Английский

Upcycling Poly(vinyl chloride) and Polystyrene Plastics Using Photothermal Conversion DOI
Hanning Jiang,

Erik A. Medina,

Erin E. Stache

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Poly(vinyl chloride) (PVC) and polystyrene (PS) are among the least recycled plastics. In this work, we developed a simple novel strategy to valorize PVC PS plastics via photothermal conversion (1-chloroethyl)benzene, commodity chemical with excellent versatility. As is known release HCl gas decompose into conjugated polyenes, envisioned dual role for While in situ-generated serves as chlorine source, resulting dehydrochlorinated-PVC (DHPVC) functions agent accelerate hydrochlorination of styrene. We converted styrene up 89% (1-chloroethyl)benzene less than 1 h white light irradiation. Subsequent nucleophilic substitution on chloro-adduct formed 1-phenylethanol (a fragrance additive) fendiline heart disease drug) high yields. The system applied various alkenes compatible post-consumer waste plasticizers. Ultimately, upcycling photothermally achieved 84% under LED h, co-upcycling 42% yield focused sunlight irradiation just 4 min.

Language: Английский

Citations

2
Combination of Dynamic and Permanent Cross-Linking: A Pathway to Enhance Elasticity and Recyclability DOI
Xinyu Li, Jing Bai, Bing Yu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Thermosetting materials exhibit advantages such as dimensional stability and elasticity but lack reprocessability due to their permanently cross-linked internal structure. Introducing a reversible network endows with often compromises resilience mechanical properties. Hence, it is still significant challenge develop recyclable elastomers high traditional thermosetting remolding ability thermoplastic materials. Based on this, this work incorporates both irreversible networks into polyurethane system, constructing synergistic distinct properties achieve simultaneously. In addition, by adjusting the proportion of networks, relationship between in different was investigated, revealing effect dynamic chemical network. This provides theoretical support for design elastomer that combine thermoset

Language: Английский

Citations

0
Self-adaptive and large-area sprayable thermal management coatings for energy saving DOI Creative Commons
Peng Zhou, Gening Jiang, Yuyan Wang

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: April 22, 2025

Self-adaptive thermal management over large areas is highly attractive since single-mode radiative cooling materials lead to undesired overcooling. However, it remains a challenge that dual-mode switchable require artificial stimuli or additional energy for switching between heating and modes. Here, different from driven by energy, we propose an autonomously self-adaptive dual-modal coating with assembled micro-heterostructures can engender the multistage scattering of incident light. The resultant demonstrates 92% solar reflectivity 93% emissivity in hot condition. More significantly, reaches 60% visible light optical modulation, which attributed formation disruption conjugation region chromogenic molecules, prevent overcooling cold A thermal-switchable fabric further fabricated via large-area spraying processes, demonstrating 2.5 °C warmer condition 8.7 cooler compared white samples. highlights importance large-scale manufacturing temperature-adaptive materials, providing insights into application dynamic garment, camping, building other fields.

Language: Английский

Citations

0