聚合物基材上沉积铝膜的两级起皱
文摘本研究揭示了在聚二甲基硅氧烷( PDMS )衬底上磁控溅射沉积Al薄膜在高温下的两阶段起皱行为。在Al薄膜中形成了具有纳米微双尺度皱纹的层次结构。微尺度皱纹起源于热收缩，波长随着膜厚的增加而增加，而纳米尺度皱纹则是由PDMS表面混合层的膨胀诱导产生的，波长几乎不变。该结果为功能层次化皱纹表面的生成提供了一种简便的方法. . .图解摘要[ Display省略]
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Fabrication and characterization of superhydrophobic PDMS composite membranes for efficient ethanol recovery via pervaporation
Abstract(#br)Bio-ethanol, clean and renewable, has proved to be a promising alternative energy resource to replace conventional fossil fuels. In its continuous production via the fermentation–pervaporation process, hydrophobic polymer membranes such as polydimethylsiloxane (PDMS) have been developed to enrich ethanol from dilute fermentation broth. However, the efficiency of current ethanol recovery via pervaporation is not high enough for large-scale bioethanol production.