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- W4291300568 abstract "Silicone aerogels are promising in efficient thermal insulating and oil absorbent materials due to the low density, low thermal conductivity, and unique micro-/nano- porous structure. However, poor mechanical reliability and water repellency along with the complicated processing greatly hinder their potential applications in emerging fields. Herein, we report a lightweight, wide-temperature mechanically flexible and surface super-hydrophobic silicone aerogels with tuned cross-linked network via a facile ambient drying process. Poly (methylhydridosiloxane) (PMHS) with different hydrogen contents was utilized to react with vinylmethyldimethoxysilane under Pt catalyst via hydrosilylation reaction and thus tune the cross-linking network in silicone aerogel effectively. The optimized PMHS-based silicone aerogels as-prepared exhibit a low density of 70–150 mg cm−3, good mechanical reliability in both liquid nitrogen and high-temperature condition of 200 °C, excellent compressive resilience after 100 cyclic compressions, and outstanding surface water repellency with water contact angle of ∼165° and water sliding angle of <3°. As expected, such multi-functional PMHS aerogels show a better thermal insulating performance than the commercial polymer foam materials. Furthermore, the as-prepared silicone aerogels not only display outstanding absorption capacity for both floating and sunken oil/solvent but also demonstrate excellent continuous oil/water separation efficiency. Clearly, the versatile PMHS-based aerogel prepared in this work may provide a new route for the design and development of high-performance silicone aerogel materials." @default.
- W4291300568 created "2022-08-14" @default.
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- W4291300568 date "2022-12-01" @default.
- W4291300568 modified "2023-10-14" @default.
- W4291300568 title "Facile synthesis of mechanically flexible and super-hydrophobic silicone aerogels with tunable pore structure for efficient oil-water separation" @default.
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- W4291300568 doi "https://doi.org/10.1016/j.mtchem.2022.101068" @default.
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