Antifogging Surface Facilitated by Nanoscale Coatings with Controllable Hydrophobicity and Cross-Linking Density
| Autor: | Greg G. Qiao, Eunhyung Nam, Shereen Tan, Edgar H. H. Wong, Anton Blencowe, Qiang Fu |
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| Přispěvatelé: | Nam, Eunhyung, Wong, Edgar HH, Tan, Shereen, Fu, Qiang, Blencowe, Anton, Qiao, Greg G |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Light transmission
Materials science Fabrication Polymers and Plastics Polymers antifogging General Chemical Engineering Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound PEG ratio Materials Chemistry Surface roughness Thin film Nanoscopic scale 03 Chemical Sciences 09 Engineering chemistry.chemical_classification Organic Chemistry Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences thin films chemistry ring opening metathesis 0210 nano-technology Ethylene glycol cross-linking |
| Popis: | Antifogging and frost-resistant coatings can be used in a wide range of applications and enable high light transmission through substrates even under changes in environmental conditions. In this study, surface confined and cross-linked antifogging thin films are fabricated on glass slides via catalyst induced cross-linking (CIC), which has been recently introduced as an easy and efficient cross-linking methodology. Four different poly(ethylene glycol) (PEG)-based polymers with different hydrophilicity are synthesized and used to prepare films via CIC. Films prepared from the most hydrophilic PEG-based polymers display the best antifogging performances when exposed to a temperature change from -20 to 22 °C. Furthermore, several parameters including cross-linking density, surface roughness, hydrophobicity, and exposure time are also evaluated in terms of film transparency. Through these measurements, it is determined that, more loosely cross-linked films retain antifogging ability for longer time periods due to higher film swellability as compared to, more highly cross-linked films. This study signifies the crucial role of the film cross-linking density and hydrophilicity on the antifogging function. Refereed/Peer-reviewed |
| Databáze: | OpenAIRE |
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