Synthesis of antistatic hybrid nanocomposite coatings using surface modified indium tin oxide (ITO) nanoparticles
Tóm tắt
Several antistatic nanocomposite hybrid coatings based on epoxy-silane developed by sol–gel method are studied. The hybrid sols are prepared by hydrolysis and condensation of GPTMS and TMOS precursors in the presence of an acid, as catalyst, and EDA as curing agent. Considering their good electrical conductivity, indium tin oxide (ITO) nanoparticles are used as antistatic agents. To improve the distribution/dispersion of ITO nanoparticles in the polymer matrix, the surface of nanoparticles is modified with silane groups (m-ITO). The antistatic properties of the coatings, containing various amounts of m-ITO nanoparticles, are investigated through surface electrical resistivity measurements. FTIR is used to screen the reaction of epoxy groups and the effect of EDA on crosslinking in the hybrid coatings. Morphology, nanoparticle distribution and surface roughness of the coatings are studied through SEM and AFM microscopy techniques. Also, homogeneous distribution of ITO nanoparticles within the polymer matrix is confirmed by EDXA elemental mapping. The cubic shape and nanometric size of the nanoparticles in the hybrid coatings are monitored by transmission electron microscopy (TEM).
Tài liệu tham khảo
Brun, G, Innocenzi, P, Guglielmi, M, Babonneau, F, “Basic Catalyzed Synthesis of Hybrid Sol–Gel Materials Based on 3-Glycidoxypropyltrimethoxysilane.” J Sol-Gel Sci. Technol., 26 303–306 (2003)
Winkler, R-P, Arpac, E, Schirra, H, Sepeur, S, Wegner, I, Schmidt, H, “Aqueous Wet Coatings for Transparent Plastic Glazing.” Thin Solid Films, 351 20–211 (1999)
Haas, K-H, Amberg-Schwab, S, Rose, K, “Functionalized Coating Materials Based on Inorganic–Organic Polymers.” Thin Solid Films, 351 198–203 (1999)
Khramov, A, Balbyshev, V, Voevodin, N, Donley, M, “Nanostructured Sol–Gel Derived Conversion Coatings Based on Epoxy- and Amino-Silanes.” Prog. Org. Coat., 47 207–213 (2003)
Senthilkumar, V, Senthil, K, “Vickraman P.“Microstructural, Electrical and Optical Properties of Indium Tin Oxide (ITO) Nanoparticles Synthesized by Co-precipitation Method.” Mater. Res. Bull., 47 1051–1056 (2012)
Houng, B, “Tin Doped Indium Oxide Transparent Conducting Thin Films Containing Silver Nanoparticles by Sol–Gel Technique.” Appl.Phys. Lett., 87 251922–251923 (2005)
Wolf, N, Rydzek, M, Gerstenlauer, D, Arduini-Schuster, M, Manara, J, “Low Temperature Processing of Redispersed Tin Doped Indium Oxide Nanoparticle Coatings.” Thin Solid Films, 532 60–65 (2013)
Zand, RZ, Langroudi, AE, Rahimi, A, “Synthesis and Characterization of Nanocomposite Hybrid Coatings Based on 3-Glycidoxypropyl-trimethoxysilane and Bisphenol A.” Iran Polym. J., 14 371–377 (2005)
Shanaghi, A, Sabour, A, Shahrabi, T, Aliofkhazraee, M, “Corrosion Protection of Mild Steel by Applying TiO2 Nanoparticle Coating via Sol–GelMethod.” Prot. Met. Chem. S, 45 305–311 (2009)
Rivero, PJ, Urrutia, A, Goicoechea, J, Zamarreño, CR, Arregui, FJ, Matías, IR, “An Antibacterial Coating Based on a Polymer/Sol–Gel Hybrid Matrix Loaded with Silver Nanoparticles.” Nanoscale Res. Lett., 6 (305) 1–7 (2011)
Elmas, S, Korkmaz, Ş, Pat, S, “Optical Characterization of Deposited ITO Thin Films on Glass and Pet Substrates.” Appl. Surf. Sci., 276 641–664 (2013)
Hotovy, J, Hüpkes, J, Böttler, W, Marins, E, Spiess, L, Kups, T, Smirnov, V, Hotovy, I, Kováč, J, “Sputtered ITO for Application in Thin-Film Silicon Solar Cells: Relationship Between Structural and Electrical Properties.” Appl. Surf. Sci., 269 81–87 (2013)
Seki, Y, Sawada, Y, Wang, M, Lei, H, Hoshi, Y, Uchida, T, “Electrical Properties of Tin-Doped Indium Oxide Thin Films Prepared by a Dip Coating.” Ceram. Int., 38 613–616 (2012)
Sytchkova, A, Zola, D, Bailey, L, Mackenzie, B, Proudfoot, G, Tian, M, Ulyashin, A, “Depth Dependent Properties of ITO Thin Films Grown by Pulsed DC Sputtering.” Mater. Sci. Eng.: B, 178 586–592 (2013)
Ding, X, Yan, J, Li, T, Zhang, L, “Transparent Conductive ITO/Cu/ITO Films Prepared on Flexible Substrates at Room Temperature.” Appl. Surf. Sci., 258 3082–3085 (2012)
Popović, J, Gržeta, B, Tkalčec, E, Tonejc, A, Bijelić, M, Goebbert, C, “Effect of Tin Level on Particle Size and Strain in Nanocrystalline Tin-Doped Indium Oxide (ITO).” Mater. Sci. Eng.: B, 176 93–98 (2011)
Chao, Y, Tang, W, Wang, X, “Properties of Resistivity, Reflection and Absorption Related to Structure of ITO Films.” J. Mater. Sci. Technol., 28 325–328 (2012)
Yakuphanoglu, F, “Electrical Conductivity, Seebeck Coefficient and Optical Properties of SnO2 Film Deposited on ITO by Dip Coating.” J. Alloy Compd, 470 55–59 (2009)
Psuja, P, Hreniak, D, Strek, W, “The Influence of Sintering Temperature and Sn4+ Concentration on Electrical and Optical Properties of ITO Nanocrystallites.” J. Phys. Conf. Ser., 146 1–8 (2009)
Lippens, P, Büchel, M, Chiu, D, Szepesi, C, “Indium–Tin-Oxide Coatings for Applications in Photovoltaics and Displays Deposited Using Rotary Ceramic Targets: Recent Insights Regarding Process Stability and Doping Level.” Thin Solid Films, 532 94–97 (2013)
Kim, S-S, Choi, S-Y, Park, C-G, Jin, H-W, “Transparent Conductive ITO Thin Films Through the Sol–Gel Process Using Metal Salts.” Thin Solid Films, 347 155–160 (1999)
Xu, B-Q, Feng, R-K, Yang, B, Deng, Y, Nonferr, T, “Effect of Sn4+ Content on Properties of Indium Tin Oxide Nanopowders.” Metal. Soc., 20 643–648 (2010)
Guenther, G, Schierning, G, Theissmann, R, Kruk, R, Schmechel, R, Baehtz, C, Prodi-Schwab, A, “Formation of Metallic Indium-Tin Phase from Indium-Tin-Oxide Nanoparticles Under Reducing Conditions and Its Influence on the Electrical Properties.” J. Appl. Phys., 104 034501–034510 (2008)
Kim, J-W, Choi, J, Hong, S-J, Han, J-I, Kim, Y-S, “Effects of the Concentration of Indium-Tin-Oxide (ITO) Ink on the Characteristics of Directly-Printed ITO Thin Films.” J. Korean Phys. S., 57 1794–1798 (2010)
Königer, T, Münstedt, H, “Coatings of Indium Tin Oxide Nanoparticles on Various Flexible Polymer Substrates: Influence of Surface Topography and Oscillatory Bending on Electrical Properties.” J. Soc. Int .Display, 16 559–568 (2008)
Farhadyar, N, Rahimi, A, Langroudi, AE, “Preparation and Characterization of Aromatic Amine Cured Epoxy-Silica Hybrid Inorganic–Organic Coating via in Situ Sol–Gel Process.” Iran Polym. J., 14 155–162 (2005)
Yang, Y, Zhou, Y, Ge, J, Yang, X, “Optically Active Polyurethane@ Indium Tin Oxide Nanocomposite: Preparation, Characterization and Study of Infrared Emissivity.” Mat. Res. Bull., 47 2264–2269 (2012)
Cho, Y-S, Yi, G-R, Hong, J-J, Jang, SH, Yang, S-M, “Colloidal Indium Tin Oxide Nanoparticles for Transparent and Conductive Films.” Thin Solid Films, 515 1864–1871 (2006)
Liu, J, Wu, D, Zeng, S, “Influence of Temperature and Layers on the Characterization of ITO Films.” J. Mater. Process Technol., 209 3943–3948 (2009)
Boston D.R., “Silver Halide Coated Organic Polymeric Films Utilizing Chitosan Acid Salt Antistatic Protection Layers,” US Patent No.: 5,457,015
Jeong, M-Y, Ahn, B-Y, Lee, S-K, Lee, W-K, Jo, N-J, “Antistatic Coating Material Consisting of Poly(butylacrylate-co-styrene) Core–Nickel Shell Particle.” T. Nonferr. Metal. Soc., 19 s119–s123 (2009)
Yu, D, Yu, W, Wang, D, Qian, Y, “Structural, Optical, and Electrical Properties of Indium Tin Oxide Films with Corundum Structure Fabricated by a Sol–Gel Route Based on Solvothermal Reactions.” Thin Solid Films, 419 166–172 (2002)