Fabrication of superhydrophilic and antireflective silica coatings on poly(methyl methacrylate) substrates |
| |
| Authors: | Zhi Geng Junhui He Ligang Xu |
| |
| Affiliation: | 1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences (CAS), China;2. Graduate University of Chinese Academy of Sciences, China;1. School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China;2. Yunnan Provincial Key Laboratory of Rural Energy, Yunnan Normal University, Kunming 650500, China;1. Research Center for Solid State Physics and Materials, School of Mathematics and Physics, Suzhou University of Science and Technology, Suzhou 215009, PR China;2. Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1;3. Department of Chemistry, Moscow State University, Leninskie Gory, House 1, Building 3, GSP-2, Moscow 119992, Russia;1. Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University, Chengdu 610064, China;2. Research Institute of Petroleum Exploration and Development of PetroChina, Beijing 100083, China;1. Dipartimento di Ingegneria dell’Impresa, Università degli Studi di Roma Tor Vergata, Via del Politecnico, 1, 00133 Roma, Italy;2. Dipartimento di Ingegneria Meccanica ed Aerospaziale, “Sapienza” Università di Roma, Via Eudossiana, 18, 00184 Roma, Italy;3. Dipartimento Economia e Impresa, Università degli Studi della Tuscia, Largo dell’Università, 01100 Viterbo, Italy;1. Institute of Materials Research and Engineering, A1STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-03, Innovis, Singapore 138634, Singapore;2. Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore |
| |
| Abstract: | Silica nanoparticles of ca. 20 nm in size were synthesized, from which hierarchically porous silica coatings were fabricated on poly(methyl methacrylate) (PMMA) substrates via layer-by-layer (LbL) assembly followed by oxygen plasma treatment. These porous silica coatings were highly transparent and superhydrophilic. The maximum transmittance reached as high as 99%, whereas that of the PMMA substrate is only 92%. After oxygen plasma treatment, the time for a water droplet to spread to a contact angle of lower than 5° decreased to as short as 0.5 s. Scanning and transmission electron microscopy were used to observe the morphology and structure of nanoparticles and coating surfaces. Transmission and reflection spectra were recorded on UV–vis spectrophotometer. Surface wettability was studied by a contact angle/interface system. The influence of mesopores on the transmittance and wetting properties of coatings was discussed on the basis of experimental observations. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
