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首页> 外文期刊>Chemistry: A European journal >A Porous POSiSil Suited for Pressure-Driven Reversible Confinement of Solutions: PSS-2
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A Porous POSiSil Suited for Pressure-Driven Reversible Confinement of Solutions: PSS-2

机译：一种适用于压力驱动的溶液的多孔术术：PSS-2

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摘要

Polyoligosiloxysilicone (POSiSil; designated PSS-2) is a copolymer of double four-ring (D4R) cyclosilicate and dimethylsiloxane. It is synthesized by linking D4R units in tetrabutylammonium cyclosilicate crystals with dimethyldichlorosilane. The structure of PSS-2 was revealed using solid state NMR spectroscopy. In this 3D copolymer D4R units are connected systematically by short siloxane chains most likely composed of 2 to 3 dimethylsiloxane monomers. Controlling the conversion of the parent material allows for tuning the porosity of PSS-2. Residual parent material is embedded inside PSS-2 polymer and can be eliminated by calcination. This leaves nanovoids inside PSS-2, which is moderately hydrophobic. Pressure-driven intrusion-extrusion cycles of aqueous solution exhibit hysteresis, thus, PSS-2 can be used as reversible confinement for liquids with a capacity of around 1000 mm~3g~(-1) in porosity.
机译：多元硅氧烷基硅氧烷（Possil;指定PSS-2）是双四环（D4R）环硅酸盐和二甲基硅氧烷的共聚物。 通过用二甲基二氯硅烷将D4R单位连接在四丁基铵环硅酸盐晶体中的D4R单元合成。 使用固态NMR光谱揭示了PSS-2的结构。 在该3D中，共聚物D4R单元通过短的硅氧烷链和最可能由2-3个二甲基硅氧烷单体组成的短硅氧烷链。 控制母材的转换允许调谐PSS-2的孔隙率。 残留的母体材料嵌入PS-2聚合物内，可以通过煅烧消除。 这叶纳米膜内在PSS-2内，其适度疏水。 压力驱动的含水溶液的入侵挤出循环表现出滞后，因此，PSS-2可用作液体容量约为1000mm〜3g〜（1）的液体的可逆限制。

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  • 来源
    《Chemistry: A European journal》 |2019年第56期|共9页
  • 作者

    Sam Smet; Pieter Verlooy; Sreeprasanth Pulinthanathu; Christine E. A. Kirschhock; Francis Taulelle; Eric Breynaert; Johan A. Martens;

  • 作者单位

    Centre for Surface Chemistry and Catalysis - Characterization and Application Team KULeuven Celestijnenlaan 200f-2461 3001 Leuven (Belgium);

    Centre for Surface Chemistry and Catalysis - Characterization and Application Team KULeuven Celestijnenlaan 200f-2461 3001 Leuven (Belgium);

    Centre for Surface Chemistry and Catalysis - Characterization and Application Team KULeuven Celestijnenlaan 200f-2461 3001 Leuven (Belgium);

    Centre for Surface Chemistry and Catalysis - Characterization and Application Team KULeuven Celestijnenlaan 200f-2461 3001 Leuven (Belgium);

    Centre for Surface Chemistry and Catalysis - Characterization and Application Team KULeuven Celestijnenlaan 200f-2461 3001 Leuven (Belgium);

    Centre for Surface Chemistry and Catalysis - Characterization and Application Team KULeuven Celestijnenlaan 200f-2461 3001 Leuven (Belgium);

    Centre for Surface Chemistry and Catalysis - Characterization and Application Team KULeuven Celestijnenlaan 200f-2461 3001 Leuven (Belgium);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    intrusion-extrusion; polymers; porous materials; pressure swing; silicates;

    机译：入侵挤出;聚合物;多孔材料;压力摆动;硅酸盐;

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