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Title: Fabrication of superhydrophilic and antireflective silica coatings on poly(methyl methacrylate) substrates

Abstract

Graphical abstract: Self-cleaning and antireflection properties were successfully achieved by assembling (PDDA/S-20){sub n} coatings on PMMA substrates followed by oxygen plasma treatment. Highlights: ► Porous silica coatings were created by layer-by-layer assembly on PMMA substrates. ► Silica coatings were treated by oxygen plasma. ► Porous silica coatings were highly antireflective and superhydrophilic on PMMA substrates. -- 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.

Authors:
 [1];  [2];  [1];  [1];  [2]
  1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences (CAS) (China)
  2. (China)
Publication Date:
OSTI Identifier:
22215127
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 6; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; DROPLETS; FABRICATION; LAYERS; NANOSTRUCTURES; OPTICAL PROPERTIES; PLASMA; PMMA; POROUS MATERIALS; SILICA; SUBSTRATES; SURFACE PROPERTIES; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Geng, Zhi, Graduate University of Chinese Academy of Sciences, He, Junhui, E-mail: jhhe@mail.ipc.ac.cn, Xu, Ligang, and Graduate University of Chinese Academy of Sciences. Fabrication of superhydrophilic and antireflective silica coatings on poly(methyl methacrylate) substrates. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.02.029.
Geng, Zhi, Graduate University of Chinese Academy of Sciences, He, Junhui, E-mail: jhhe@mail.ipc.ac.cn, Xu, Ligang, & Graduate University of Chinese Academy of Sciences. Fabrication of superhydrophilic and antireflective silica coatings on poly(methyl methacrylate) substrates. United States. doi:10.1016/J.MATERRESBULL.2012.02.029.
Geng, Zhi, Graduate University of Chinese Academy of Sciences, He, Junhui, E-mail: jhhe@mail.ipc.ac.cn, Xu, Ligang, and Graduate University of Chinese Academy of Sciences. Fri . "Fabrication of superhydrophilic and antireflective silica coatings on poly(methyl methacrylate) substrates". United States. doi:10.1016/J.MATERRESBULL.2012.02.029.
@article{osti_22215127,
title = {Fabrication of superhydrophilic and antireflective silica coatings on poly(methyl methacrylate) substrates},
author = {Geng, Zhi and Graduate University of Chinese Academy of Sciences and He, Junhui, E-mail: jhhe@mail.ipc.ac.cn and Xu, Ligang and Graduate University of Chinese Academy of Sciences},
abstractNote = {Graphical abstract: Self-cleaning and antireflection properties were successfully achieved by assembling (PDDA/S-20){sub n} coatings on PMMA substrates followed by oxygen plasma treatment. Highlights: ► Porous silica coatings were created by layer-by-layer assembly on PMMA substrates. ► Silica coatings were treated by oxygen plasma. ► Porous silica coatings were highly antireflective and superhydrophilic on PMMA substrates. -- 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.},
doi = {10.1016/J.MATERRESBULL.2012.02.029},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 6,
volume = 47,
place = {United States},
year = {2012},
month = {6}
}