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Mussel‐Inspired Polymer‐Based Universal Spray Coating for Surface Modification: Fast Fabrication of Antibacterial and Superhydrophobic Surface Coatings
| Content Provider | Semantic Scholar |
|---|---|
| Author | Schlaich, Christoph Li, Mingjun Cheng, Chong Donskyi, Ievgen S. Yu, Leixiao Song, Geonho Osorio, Ernesto Raúl Yepes Wei, Qiang Haag, Rainer |
| Copyright Year | 2018 |
| Abstract | DOI: 10.1002/admi.201701254 of dopamine results in the formation of PDA and the deposition of thin polymeric films on nearly any kind of substrate.[9–12] While in nature, the adhesion and solidification of a mussel byssus only requires 3–10 min, a PDA coating requires several hours to form a nanometer-scale coating. To overcome PDA’s inherent drawbacks, various strategies have been developed to accelerate the polymerization by coformulation with additives or through microwave or UV irradiation.[13–16] However, such methods result in a more complicated process and/or contamination of the resulting polymer. The direct attachment of catechol derivatives to multivalent polymer architectures has been reported as an alternative approach to accelerate the coating time and offers novel strategies for fabricating functional polymer coatings.[17–21] Despite the widespread academic interest in musselinspired adhesives, industrial application is rather limited, because most of the functionalization methods involve dipcoating processes. Regarding practical applications, the disadvantage of dip coating is obvious. Dip coating is only suitable for small surface areas, because it is highly dependent on the coating vessel. As a result, many surfaces, such as walls, windscreens, or ships, cannot be coated via dip coating. For larger surface areas, spray coating is clearly superior because it allows the coating of any substrates, combined with high throughput, and low material waste for large surface area deposition. Recently, Lee and co-workers addressed these problems and reported an NaIO4-accelerated, PDA-based spray coating as an alternative to classical dip coating approaches.[22] However, in this case, the slow coating speed was again compensated by the addition of oxidizing agents. Although mussel-inspired coatings can already be obtained by spraying processes, the postmodification without dip coating to achieve a specific function, such as superhydrophobicity or anti-bacterial properties, is still a great challenge. Spray coatings that utilize the rapid coating time of mussel-inspired polymers, and can be postmodified via spray coating process, are still highly limited. Herein, we report a novel mussel-inspired dendritic polyglycerol-based spraycoating strategy (sMI-dPG) for substrate-independent surface modification using a simple spray coater. Various coated substrates were tested regarding their coating mechanism, surface roughness, stability of the coatings, and postmodification Although mussel-inspired surface chemistry is one of the most utilized strategies for surface functionalization, its practical and/or industrial applications are rather limited, because dip coating can only treat small surface areas and is dependent on the coating vessel. Herein a musselinspired, polymer-based, multifunctional, and substrate-independent spray coating strategy for surface modification under extremely mild conditions using mussel-inspired polyglycerol is described. The postfunctionalization of the obtained surface via spray coating with silver nanoparticles results in a nanoparticle embedded coating with excellent, long-term antibacterial properties. Furthermore, a simple method for preparing a superhydrophobic, highly water-repellent coating by coformulation of the mussel-inspired spray coating with hydrophobic nanoparticles is presented. |
| Starting Page | 1701254 |
| Ending Page | 1701254 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1002/admi.201701254 |
| Alternate Webpage(s) | http://pdf-s3.xuebalib.com:1262/qlmQCfx6MtJ.pdf |
| Alternate Webpage(s) | https://doi.org/10.1002/admi.201701254 |
| Volume Number | 5 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
