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Porous polydimethylsiloxane filled with graphene-based material for biomedicine
Journal of Porous Materials ( IF 2.6 ) Pub Date : 2021-06-02 , DOI: 10.1007/s10934-021-01095-z
M. Cutroneo , V. Havranek , V. Semian , A. Torrisi , A. Mackova , P. Malinsky , L. Silipigni , P. Slepicka , D. Fajstavr , L. Torrisi

In this paper, the synthesis of macro-porous polydimethylsiloxane (PDMS) sponges decorated with reduced graphene oxide and graphene is described using a top-down approach based on the sugar templating process. Among the multiple assets enjoyed by PDMS, its elasticity and porosity make possible the uniform dispersion of embedded graphene-based material into its structure. Where possible, the optical, surface and morphology properties of both porous PDMS composites and their not porous (bulk) counterparts have been studied. Scanning transmission ion microscopy (STIM), based on the reciprocity between the beam energy loss and the sample areal density, has been used to obtain the images of the sponge internal part. A detailed spatial resolution of the PDMS microstructure has been deduced by the areal density map. The homogeneous dispersion of the fillers was observed by scanning electron microscopy (SEM) and indirectly by light transmittance measures performed in several regions of the PDMS bulk. The reduced graphene oxide and graphene introduced into PDMS significantly improve its electrical conductivity. The porosity of the presented hybrid material holds a key role for good performances in microelectronics and biomedicine.



中文翻译:

用于生物医学的石墨烯基材料填充的多孔聚二甲基硅氧烷

在本文中,使用基于糖模板工艺的自上而下的方法描述了用还原氧化石墨烯和石墨烯装饰的大孔聚二甲基硅氧烷 (PDMS) 海绵的合成。在 PDMS 拥有的多种资产中,其弹性和孔隙率使得嵌入的石墨烯基材料均匀分散到其结构中成为可能。在可能的情况下,多孔 PDMS 复合材料及其非多孔(块状)的光学、表面和形态特性) 同行进行了研究。扫描透射离子显微镜 (STIM) 基于束能量损失和样品面密度之间的互易性,已被用于获取海绵内部部件的图像。PDMS 微结构的详细空间分辨率已通过面密度图推导出来。通过扫描电子显微镜 (SEM) 和间接通过在 PDMS 本体的几个区域中进行的透光率测量来观察填料的均匀分散。引入到 PDMS 中的还原氧化石墨烯和石墨烯显着提高了其导电性。所提出的混合材料的孔隙率对于微电子和生物医学的良好性能起着关键作用。

更新日期:2021-06-02
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