17 lines
5.5 KiB
JSON
17 lines
5.5 KiB
JSON
[
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{
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"id": 1,
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"chunk": "# Supporting Information",
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"category": " References"
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},
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{
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"id": 2,
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"chunk": "# Transparent and Scratch-Resistant Antifogging Coatings with Rapid Self-Healing Capability \n\nBang Liang†‡, Zhenxing Zhong†‡, Erna Jia†‡, Guangyu Zhang\\*†, Zhaohui Su\\*†‡ †State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China \n\n‡University of Science and Technology of China, Hefei, 230026, P. R. China \\*Correspondence should be addressed to Z.S. (zhsu@ciac.ac.cn) or G.Z. (zhanggy608@ciac.ac.cn) \n\n \nFigure S1. (a) Synthesis of SBS, and (b) $^{1}\\mathrm{H-NMR}$ spectrum of SBS in DMSO-d6. (c) Modification of the silica nanoparticles with SBS to introduce sulfobetaine groups to the surfaces of the nanoparticles. (d) FTIR spectra of plain and modified silica nanoparticles. The presence of the Si-O-C bending peak at $\\sim1510\\ \\mathrm{cm^{-1}}$ as well as the $\\mathrm{CH}_{2}$ stretching and scissoring peaks at $\\sim2950$ and ${\\sim}1480~\\mathrm{cm^{-1}}$ respectively confirms the grafting of the organic species to the silica surface. \n\n \nFigure S2. ThPea atmehtiercskne1ss Uonitf p(SBMA7-co-HEMA3) composite coating analyzed with step profiler. \n\n \nFigure S3. TEM images of p(SBMA7-co-HEMA3) filled with (a) $2.5\\mathrm{wt\\%}$ plain and (b) $2.5\\mathrm{wt\\%}$ and (c) $7.5~\\mathrm{wt\\%}$ modified silica nanoparticles, respectively, and (d) UV-vis spectra of these three coatings. These data show that silica nanoparticles aggregate in the coating at a content higher than $5\\mathrm{wt\\%}$ , resulting in decreased transparency. \n\n \nFigure S4. (a) X-ray photoelectron spectrum (XPS) of the p(SBMA7-co-HEMA3) composite coating. (b) Optical micrograph of the composite coating after a cross-tape test, showing no detachment of the coating or debris. (c) Thickness of the composite coating as a function of immersion time in deionized water, showing stability of the coating in aqueous environment. \n\nXPS measurements were performed on a Thermo-Electron ESCALAB250 spectrometer equipped with a monochromatic Al X-ray source $(1486.6~\\mathrm{eV})$ at a $90^{\\circ}$ takeoff angle with $20~\\mathrm{eV}$ pass energy. The S2p, N1s, Si2s and Si2p peaks observed for coated glass are consistent with the presence of the coating on the substrate. \n\n \n\nFigure S5. (a) Optical images of the composite coating upon exposure to spray produced by a humidifier (left) for 1, 5 and $10\\mathrm{~h~}$ , respectively (right), and (b) corresponding UV-vis spectra. Both results show that the coating remains clear. \n\n \nFigure S6. Time profiles (three independent tests) of ice adhesion strength on the surface of bare glass. \n\n \nFigure S7. Photograph of a pencil hardness tester. \n\n \nFigure S8. (a) Optical images of the $1^{\\mathrm{st}}$ and the $20^{\\mathrm{th}}$ cycles of the coating cut and healed at the same region. (b) Raman spectra of the coating as-prepared and after 20 cut-and-heal cycles at the same region. \n\n \nFigure S9. Healing time as a function of thickness of the p(SBMA7-co-HEMA3) composite coating (for repairing a cut of $250~{\\upmu\\mathrm{m}}$ width through the coating thickness exposing the substrate). \n\n \nFigure S10. (a) Antifogging performance and (b) UV-vis spectra of the composite coating with different HEMA contents in the copolymer. \n\n \nFigure S11. QCM-D frequency shift of (a) bare electrode and (b) electrode coated with the composite coating in contact with a BSA solution in PBS $\\mathrm{~(~1~~mg/mL)~}$ . The experimental procedure is described in the literature.1 \n\n \nFigure S12. (a) Snapshots showing a soybean oil droplet sticks on scratched coating (top), but is lifted on the coating that has healed the scratches (bottom) after immersion in water. (b) Mass of BSA adsorbed on a scratched coating vs. that on a healed one. \n\nTable S1. Pencil Hardness for Coatings of Different HEMA Contents in the Copolymer \n\n\n<html><body><table><tr><td>HEMA content</td><td>0 mol%</td><td>15 mol%</td><td>30 mol%</td></tr><tr><td>pencil hardness</td><td>4H</td><td>4H</td><td>4H</td></tr></table></body></html>",
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"category": " Results and discussion"
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},
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{
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"id": 3,
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"chunk": "# Reference \n\n1. Liang, B.; Zhang, G.; Zhong, Z.; Sato, T.; Hozumi, A.; Su, Z. Substrate-independent polyzwitterionic coating for oil/water separation membranes. Chem. Eng. J. 2019, 362, 126-135.",
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"category": " References"
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}
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] |