Polymer Science, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
Macromolecular Chemistry and New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
ACS Appl Mater Interfaces. 2023 Apr 19;15(15):19682-19694. doi: 10.1021/acsami.3c01060. Epub 2023 Apr 5.
Fouling remains a widespread challenge as its nonspecific and uncontrollable character limits the performance of materials and devices in numerous applications. Although many promising antifouling coatings have been developed to reduce or even prevent this undesirable adhesion process, most of them suffer from serious limitations, specifically in scalability. Whereas scalability can be particularly problematic for covalently bound antifouling polymer coatings, replacement by physisorbed systems remains complicated as it often results in less effective, low-density films. In this work, we introduce a two-step adsorption strategy to fabricate high-density block copolymer-based antifouling coatings on hydrophobic surfaces, which exhibit superior properties compared to one-step adsorbed coatings. The obtained hybrid coating manages to effectively suppress the attachment of both lysozyme and bovine serum albumin, which can be explained by its dense and homogeneous surface structure as well as the desired polymer conformation. In addition, the intrinsic reversibility of the adhered complex coacervate core micelles allows for the successful triggered release and regeneration of the hybrid coating, resulting in full recovery of its antifouling properties. The simplicity and reversibility make this a unique and promising antifouling strategy for large-scale underwater applications.
污染仍然是一个普遍存在的挑战，因为其非特异性和不可控的性质限制了材料和设备在众多应用中的性能。尽管已经开发出许多有前途的抗污染涂层来减少甚至防止这种不良的粘附过程，但它们大多数都存在严重的局限性，特别是在可扩展性方面。对于共价结合的抗污染聚合物涂层来说，可扩展性可能是一个特别成问题的问题，而用物理吸附系统来替代仍然很复杂，因为这通常会导致效果较差、密度较低的薄膜。在这项工作中，我们引入了一种两步吸附策略，在疏水面上制备高密度的基于嵌段共聚物的抗污染涂层，与一步吸附涂层相比，该涂层具有更优异的性能。所得到的杂化涂层能够有效地抑制溶菌酶和牛血清白蛋白的附着，这可以归因于其致密且均匀的表面结构以及所需的聚合物构象。此外，附着的复合凝聚核胶束的固有可逆性允许杂化涂层的成功触发释放和再生，从而完全恢复其抗污染性能。这种方法的简单性和可逆性使其成为一种独特且有前途的用于大规模水下应用的抗污染策略。
