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Title: Three-dimensional structure investigation of Waterborne Paint by Electron Microscopic Imaging

Abstract

Serial block-face scanning electron microscopy (SBFSEM) has been used to investigate the three-dimensional (3D) structure of a cured waterborne paint containing TiO2 pigment particles, and the surrounding environment of the TiO2 pigment particles in the cured paint film was also discussed. The 3D spatial distribution of the particles in the paint film and their degree of dispersion were clearly revealed. More than 55% of the measured TiO2 particles have volumes between 1.0 × 106 nm3 and 1.0 × 107 nm3. From the obtained 3D images, we proposed that there are three different types of voids in the measured cured waterborne paint film: voids that exist in the cured paint themselves, voids produced by particle shedding, and voids produced by quasi-liquid phase evaporation during measurement. Among these, the latter two types of voids are artefacts caused during SBFSEM measurement which provide evidence to support that the pigment particles in the cured paint/coating films are surrounding by quasi-liquid environment rather than dry solid environment. The error caused by particle shedding to the statistical calculation of the TiO2 particles was corrected in our analysis. The resulting 3D structure of the paint, especially the different voids are important for further systematic research, and aremore » critical for understanding the real environment of the pigment particles in the cured paint films.« less

Authors:
 [1];  [2];  [3];  [3];  [4];  [1]
  1. Tongji Univ., Shanghai (China). School of Materials Science and Engineering
  2. Univ. College London, London (United Kingdom). London Centre for Nanotechnology; Tongji Univ., Shanghai (China). School of Materials Science and Engineering
  3. Univ. of Manchester, Manchester (United Kingdom). School of Materials
  4. Univ. College London, London (United Kingdom). London Centre for Nanotechnology; Tongji Univ., Shanghai (China). School of Materials Science and Engineering; Brookhaven National Lab. (BNL), Upton, NY (United States). Division of Condensed Matter Physics and Materials Science
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1493185
Alternate Identifier(s):
OSTI ID: 1504376
Report Number(s):
BNL-211238-2019-JAAM; BNL-211491-2019-JAAM
Journal ID: ISSN 1996-1944
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Materials
Additional Journal Information:
Journal Volume: 12; Journal Issue: 3; Journal ID: ISSN 1996-1944
Publisher:
MDPI
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Three-dimensional (3D) structure; TiO2 particles; Voids; Water-borne paint; Serial block-face scanning electron microscopy (SBFSEM)

Citation Formats

Yang, Fei, Chen, Bo, Hashimoto, Teruo, Thompson, George, Robinson, Ian, and Zhang, Yongming. Three-dimensional structure investigation of Waterborne Paint by Electron Microscopic Imaging. United States: N. p., 2019. Web. doi:10.3390/ma12030464.
Yang, Fei, Chen, Bo, Hashimoto, Teruo, Thompson, George, Robinson, Ian, & Zhang, Yongming. Three-dimensional structure investigation of Waterborne Paint by Electron Microscopic Imaging. United States. https://doi.org/10.3390/ma12030464
Yang, Fei, Chen, Bo, Hashimoto, Teruo, Thompson, George, Robinson, Ian, and Zhang, Yongming. Sat . "Three-dimensional structure investigation of Waterborne Paint by Electron Microscopic Imaging". United States. https://doi.org/10.3390/ma12030464. https://www.osti.gov/servlets/purl/1493185.
@article{osti_1493185,
title = {Three-dimensional structure investigation of Waterborne Paint by Electron Microscopic Imaging},
author = {Yang, Fei and Chen, Bo and Hashimoto, Teruo and Thompson, George and Robinson, Ian and Zhang, Yongming},
abstractNote = {Serial block-face scanning electron microscopy (SBFSEM) has been used to investigate the three-dimensional (3D) structure of a cured waterborne paint containing TiO2 pigment particles, and the surrounding environment of the TiO2 pigment particles in the cured paint film was also discussed. The 3D spatial distribution of the particles in the paint film and their degree of dispersion were clearly revealed. More than 55% of the measured TiO2 particles have volumes between 1.0 × 106 nm3 and 1.0 × 107 nm3. From the obtained 3D images, we proposed that there are three different types of voids in the measured cured waterborne paint film: voids that exist in the cured paint themselves, voids produced by particle shedding, and voids produced by quasi-liquid phase evaporation during measurement. Among these, the latter two types of voids are artefacts caused during SBFSEM measurement which provide evidence to support that the pigment particles in the cured paint/coating films are surrounding by quasi-liquid environment rather than dry solid environment. The error caused by particle shedding to the statistical calculation of the TiO2 particles was corrected in our analysis. The resulting 3D structure of the paint, especially the different voids are important for further systematic research, and are critical for understanding the real environment of the pigment particles in the cured paint films.},
doi = {10.3390/ma12030464},
journal = {Materials},
number = 3,
volume = 12,
place = {United States},
year = {Sat Feb 02 00:00:00 EST 2019},
month = {Sat Feb 02 00:00:00 EST 2019}
}

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Cited by: 2 works
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Figures / Tables:

Figure 1 Figure 1: Two-dimensional (2D) backscattered electron (BSE) micrographs of the TiO2 pigmented waterborne paint film obtained from serial block-face scanning electron microscopy (SBFSEM) measurement: (a) An original BSE micrograph slice of the sample acquired by SBFSEM; (b) The zoomed-in image of the part enclosed by the red square, 500 xmore » 500 pixels (6.5 μm x 6.5 μm) large, in panel a; (c) The noise reduction processed image of the selective part as shown in panel b. The grey parts are acrylic resin, the white parts are TiO2 particles, and the black parts are voids.« less

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.