Underwater Mechanically Robust Oil‐Repellent Materials: Combining Conflicting Properties Using a Heterostructure,Advanced Materials

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Underwater Mechanically Robust Oil‐Repellent Materials: Combining Conflicting Properties Using a Heterostructure
Advanced Materials ( IF 27.4 ) Pub Date : 2018-01-19 , DOI: 10.1002/adma.201706634
Xiangfu Meng _{1,

2} , Miaomiao Wang _{1,

2} , Liping Heng ₁ , Lei Jiang ₁

Affiliation

The development of underwater mechanically robust oil‐repellent materials is important due to the high demand for these materials with the increase in underwater activities. Based on the previous study, a new strategy is demonstrated to prepare underwater mechanically robust oil‐repellent materials by combining conflicting properties using a heterostructure, which has a layered hydrophobic interior structure with a columnar hierarchical micro/nanostructure on the surface and a hydrophilic outer structure. The surface hydrophilic layer imparts underwater superoleophobicity and low oil adhesion to the material, which has oil contact angle of larger than 150° and adhesion of lower than 2.8 µN. The stability of the mechanical properties stemming from the interior hydrophobic‐layered structure enables the material to withstand high weight loads underwater. The tensile stress and the hardness of such a heterostructure film after 1 month immersion in seawater and pH solution are in the range from 83.92 ± 8.22 to 86.73 ± 7.8 MPa and from 83.88 ± 6.8 to 86.82 ± 5.64 MPa, respectively, which are superior to any underwater oil‐repellent material currently reported.

中文翻译：

水下机械坚固的拒油材料：使用异质结构组合相互冲突的特性

水下机械坚固的拒油材料的开发非常重要，因为随着水下活动的增加，对这些材料的需求也很高。在之前的研究基础上，展示了一种新策略，该策略可通过使用异质结构结合冲突特性来制备水下机械坚固的拒油材料，该异质结构具有分层的疏水内部结构，表面上呈柱状分层的微观/纳米结构和亲水性外部结构。表面亲水层赋予该材料水下超疏油性和低油粘附性，该材料的油接触角大于150°，粘附性小于2.8 µN。内部疏水层结构带来的机械性能稳定性使该材料能够承受水下的高重量载荷。这种异质结构膜在海水和pH溶液中浸泡1个月后的拉伸应力和硬度分别在83.92±8.22至86.73±7.8 MPa和83.88±6.8至86.82±5.64 MPa范围内，优于当前报告的任何水下驱油材料。

更新日期：2018-01-19

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