Integrating Hollow Metal‐Organic Frameworks with Supercritical CO2: A Path to High‐Performance Polystyrene Microcellular Foams DOI
Wenxiang Wang,

Hongxin Guo,

Yutong Ding

et al.

Advanced Engineering Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 4, 2025

Polymer foams, particularly those prepared using supercritical carbon dioxide (Sc‐CO 2 ), are extensively utilized in diverse applications like thermal insulation and packaging due to their lightweight efficient properties. However, the effectiveness of Sc‐CO foaming is often limited by low cell density large size, mainly resulting from insufficient nucleation control inadequate gas management. In this study, hollow metal‐organic frameworks (MOFs) (HZIF‐8) were introduced as effective nucleating agents ‐assisted polystyrene (PS) foaming. Owing unique structure high internal surface area, HZIF‐8 significantly enhances adsorption storage capacity, thereby improving efficiency during process. The results show that incorporating into PS increases (up 1.4 × 10 9 cells cm −3 ) decreases average size (to 8.6 μm) under optimal conditions (13.8 MPa, 100 °C). Compared conventional ZIF‐8 nanoparticles, facilitates more CO uptake, leading a finer microcellular morphology, stable foam expansion, enhanced mechanical These demonstrate potential MOFs creating high‐performance with promising energy‐efficient insulation, packaging, functional materials.

Language: Английский

Integrating Hollow Metal‐Organic Frameworks with Supercritical CO2: A Path to High‐Performance Polystyrene Microcellular Foams DOI
Wenxiang Wang,

Hongxin Guo,

Yutong Ding

et al.

Advanced Engineering Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 4, 2025

Polymer foams, particularly those prepared using supercritical carbon dioxide (Sc‐CO 2 ), are extensively utilized in diverse applications like thermal insulation and packaging due to their lightweight efficient properties. However, the effectiveness of Sc‐CO foaming is often limited by low cell density large size, mainly resulting from insufficient nucleation control inadequate gas management. In this study, hollow metal‐organic frameworks (MOFs) (HZIF‐8) were introduced as effective nucleating agents ‐assisted polystyrene (PS) foaming. Owing unique structure high internal surface area, HZIF‐8 significantly enhances adsorption storage capacity, thereby improving efficiency during process. The results show that incorporating into PS increases (up 1.4 × 10 9 cells cm −3 ) decreases average size (to 8.6 μm) under optimal conditions (13.8 MPa, 100 °C). Compared conventional ZIF‐8 nanoparticles, facilitates more CO uptake, leading a finer microcellular morphology, stable foam expansion, enhanced mechanical These demonstrate potential MOFs creating high‐performance with promising energy‐efficient insulation, packaging, functional materials.

Language: Английский

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