Herein, bioinspired superhydrophobic hierarchical polydimethylsiloxane (PDMS) nanocomposites filled with nanosheets of graphene oxide adorned with single-walled carbon nanotubes (GO–SWCNTs) were developed and cured by a catalytic hydrosilation approach. Hybrid GO–SWCNTs nanofillers were created using a facile one-phase ultrasonication process. The surface properties, specifically the superhydrophobicity, hierarchical roughness, and surface free energy (SFE), of virgin silicone and the produced PDMS/GO-SWCNTs nanocomposites have been examined. Additionally, the silicone/GO-SWCNT composites’ mechanical, durability, and anticorrosive properties were examined. Several gram-negative and gram-positive bacteria and fungi strains were applied in a 30-day laboratory experiment to assess the coating systems’ efficacy. The uniformly dispersed silicone/GO–SWCNTs (2.0 wt%) nanocomposite surface demonstrated the highest water contact angle (150° ± 1°), micro/nano-rough topology, lowest SFE (19.6 mN/m), enhanced durability, and FR properties. The well-dispersed PDMS/GO-SWCNTs (2.0 wt%) nanocomposite had the lowest biodegradability percentages of 11.9 %, 4.4 %, and 11.39 % for gram-positive, gram-negative, and fungal species, respectively.

中文翻译：

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坚固的超疏水性聚二甲基硅氧烷-碳质纳米复合材料作为环保型海事防污表面


在此，开发了生物启发超疏水性多级聚二甲基硅氧烷 （PDMS） 纳米复合材料，该纳米复合材料填充有装饰有单壁碳纳米管 （GO-SWCNT） 的氧化石墨烯纳米片，并通过催化加氢硅化方法固化。混合 GO-SWCNTs 纳米填料是使用简单的一步超声工艺创建的。已经检查了原生硅胶和生产的 PDMS/GO-SWCNTs 纳米复合材料的表面特性，特别是超疏水性、多级粗糙度和表面自由能 （SFE）。此外，还检查了硅胶/GO-SWCNT 复合材料的机械、耐久性和防腐性能。在为期 30 天的实验室实验中应用了几种革兰氏阴性和革兰氏阳性细菌和真菌菌株，以评估涂层系统的功效。均匀分散的硅胶/GO-SWCNTs （2.0 wt%） 纳米复合表面表现出最高的水接触角 （150° ± 1°）、微/纳米粗糙拓扑结构、最低的 SFE （19.6 mN/m）、增强的耐久性和阻燃性能。分散良好的 PDMS/GO-SWCNTs （2.0 wt%） 纳米复合材料对革兰氏阳性、革兰氏阴性和真菌物种的生物降解率最低，分别为 11.9 %、4.4 % 和 11.39 %。