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Preparation of HMDS-modified silica/polyacrylate hydrophobic hard coatings on PMMA substrates

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Abstract

Colloidal silica nanoparticles synthesized from tetraethoxysiliane via a sol–gel process were surface modified by 3-(trimethoxysilyl)propyl methacrylate (MSMA) and 1,1,1,3,3,3-hexamethyldisilazane (HMDS). MSMA acted both as a C=C provider and a coupling agent, whereas HMDS was used to prevent particle aggregation and engender hydrophobicity. The modified silica particles (HMSiO2) were UV-cured together with the crosslinking agent, dipentaerythritol hexa-acrylate (DPHA) to form coatings on poly(methyl methacrylate) (PMMA) substrates. Dynamic light scattering of the synthesized sols indicated that the average size of HMSiO2 was ca. 10 nm, consistent with that obtained from TEM imaging. FTIR spectroscopic analyses demonstrated chemical attachment of HMDS to the silica particles. The cured coatings were characterized in terms of water contact angle, light transmittance, hardness, abrasion resistance, and surface morphology. It was found that hydrophobicity of the coatings increased while light transmittance and hardness decreased with increasing HMDS content. DPHA played the role of providing mechanical strength and adherence; however, the coatings became lightly hazy when the weight ratio of DPHA/silica fell in the range 0.3–0.7. In the optimal case, a hard coating (4H) with water contact angle of 108° and transmittance of ~100% (vs PMMA) had been obtained at the DPHA content of 10 wt%.

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References

  1. Schottner, G, “Hybrid Sol–Gel–Derived Polymers: Applications of Multifunctional Materials.” Chem. Mater., 13 (10) 3422–3435 (2001)

    Article  Google Scholar 

  2. Schmidt, H, “Nanoparticles by Chemical Synthesis, Processing to Materials and Innovative Applications.” Appl. Organomet. Chem., 15 (5) 331–343 (2001)

    Article  Google Scholar 

  3. Aegerter, A, Almeida, R, Soutar, A, Tadanaga, K, Yang, H, Watanabe, T, “Coatings Made by Sol-Gel and Chemical Nanotechnology.” J. Sol Gel Sci. Technol., 47 (2) 203–236 (2008)

    Article  Google Scholar 

  4. Wu, LYL, Boon, L, Chen, Z, Zeng, XT, “Adhesion Enhancement of Sol-Gel Coating on Polycarbonate by Heated Impregnation Treatment.” Thin Solid Films, 517 (17) 4850–4856 (2009)

    Article  Google Scholar 

  5. Lee, WH, Kim, HJ, Lee, DW, Jeong, MG, Lim, DS, Nam, SM, “Al2O3-Nanodiamond Composite Coatings with High Durability and Hydrophobicity Prepared by Aerosol Deposition.” Surf. Coat. Technol., 206 (22) 4679–4684 (2012)

    Article  Google Scholar 

  6. De, S, Jana, D, Medda, SK, De, G, “Wavelength Selective Antireflective Coatings on Plastics with Hydrophobic Surfaces.” Ind. Eng. Chem. Res., 52 (23) 7737–7745 (2013)

    Article  Google Scholar 

  7. Haraguchia, M, Hirai, T, Ozawa, M, Miyaji, K, Tanaka, K, “Hydrophobic Acrylic Hard Coating by Surface Segregation of Hyper-Branched Polymers.” Appl. Surf. Sci., 266 235–238 (2013)

    Article  Google Scholar 

  8. Boudot, M, Gaud, V, Louarn, M, Selmane, M, Grosso, D, “Sol–Gel based Hydrophobic Antireflective Coatings on Organic Substrates: A Detailed Investigation of Ammonia Vapor Treatment (AVT).” Chem. Mater., 26 (5) 1822–1833 (2014)

    Article  Google Scholar 

  9. Chang, CC, Oyang, TY, Hwang, FH, Chen, CC, Cheng, LP, “Preparation of Polymer/Silica Hybrid Hard Coatings with Enhanced Hydrophobicity on Plastic Substrates.” J. Non Cryst. Solids, 358 (1) 72–76 (2012)

    Article  Google Scholar 

  10. Chang, CC, Oyang, TY, Chen, YC, Hwang, FH, Cheng, LP, “Preparation of Hydrophobic Nanosilica-Filled Polyacrylate Hard Coatings on Plastic Substrates.” J. Coat. Technol. Res., 11 (3) 381–386 (2014)

    Article  Google Scholar 

  11. Chang, CC, Lin, ZM, Huang, SH, Cheng, LP, “Preparation of Highly Transparent 13F-Modified Nano-Silica/Polymer Hydrophobic Hard Coatings on Plastic Substrates.” J. Appl. Sci. Eng., 18 (4) 387–394 (2015)

    Google Scholar 

  12. Nakajima, A, Fujishima, A, Hashimoto, K, Watanabe, T, “Preparation of Transparent Superhydrophobic Boehmite and Silica Films by Sublimation of Aluminum Acetylacetonate.” Adv. Mater., 11 (16) 1365–1368 (1999)

    Article  Google Scholar 

  13. Bravo, J, Zhai, L, Wu, Z, Cohen, RE, Rubner, MF, “Transparent Superhydrophobic Films Based on Silica Nanoparticles.” Langmuir, 23 (13) 7293–7298 (2007)

    Article  Google Scholar 

  14. Dodiuk, H, Rios, PF, Dotan, A, Kenig, S, “Hydrophobic and Self-cleaning Coatings.” Polym. Adv. Technol., 18 (9) 746–750 (2007)

    Article  Google Scholar 

  15. Rios, PF, Dodiuk, H, Kenig, S, McCarthy, S, Dotan, A, “Durable Ultra-Hydrophobic Surfaces for Self-cleaning Applications.” Polym. Adv. Technol., 19 (11) 1684–1691 (2008)

    Google Scholar 

  16. Xu, QF, Wang, JN, Smith, IH, Sanderson, KD, “Superhydrophobic and Transparent Coatings Based on Removable Polymeric Spheres”. J. Mater. Chem., 19 (5) 655–660 (2009)

    Article  Google Scholar 

  17. Budunoglu, H, Yildirim, A, Guler, MO, Bayindir, M, “Highly Transparent, Flexible, and Thermally Stable Superhydrophobic ORMOSIL Aerogel Thin Films.” ACS Appl. Mater. Interfaces, 3 (2) 539–545 (2011)

    Article  Google Scholar 

  18. Karunakaran, RG, Lu, CH, Zhang, Z, Yang, S, “Highly Transparent Superhydrophobic Surfaces from the Coassembly of Nanoparticles (≤100 nm).” Langmuir, 27 (8) 4594–4602 (2011)

    Article  Google Scholar 

  19. Xu, L, Gao, L, He, J, “Fabrication of Visible/Near-IR Antireflective and Superhydrophobic Coatings from Hydrophobically Modified Hollow Silica Nanoparticles and Poly(methyl methacrylate).” RCS Adv., 2 (33) 12764–12769 (2012)

    Google Scholar 

  20. Ebert, D, Bhushan, B, “Transparent, Superhydrophobic, and Wear-Resistant Coatings on Glass and Polymer Substrates Using SiO2, ZnO, and ITO Nanoparticles.” Langmuir, 28 (31) 11391–11399 (2012)

    Article  Google Scholar 

  21. Zhou, G, He, J, Gao, L, Ren, T, Li, T, “Superhydrophobic Self-Cleaning Antireflective Coatings on Fresnel Lenses by Integrating Hydrophilic Solid and Hydrophobic Hollow Silica Nanoparticles.” RSC Adv., 3 (44) 21789–21796 (2013)

    Article  Google Scholar 

  22. Gao, L, He, J, “Surface Hydrophobic Co-modification of Hollow Silica Nanoparticles Toward Large-Area Transparent Superhydrophobic Coatings.” J. Colloid Interface Sci., 396 152–159 (2013)

    Article  Google Scholar 

  23. Jeevajothi, K, Subasri, R, Soma Raju, KRC, “Transparent, Non-fluorinated, Hydrophobic Silica Coatings with Improved Mechanical Properties.” Ceram. Int., 39 (2) 2111–2116 (2013)

    Article  Google Scholar 

  24. Lin, J, Chen, H, Fei, T, Liu, C, Zhang, J, “Highly Transparent and Thermally Stable Superhydrophobic Coatings from the Deposition of Silica Aerogels.” Appl. Surf. Sci., 273 776–786 (2013)

    Article  Google Scholar 

  25. Huang, WH, Lin, CS, “Robust Superhydrophobic Transparent Coatings Fabricated by a Low-Temperature Sol-Gel Process”. Appl. Surf. Sci., 305 702–709 (2014)

    Article  Google Scholar 

  26. Liu, S, Liu, X, Latthe, SS, Gao, L, An, S, Yoon, SS, Liu, B, Xing, R, “Self-Cleaning Transparent Superhydrophobic Coatings Through Simple Sol-Gel Processing of Fluoroalkylsilane.” Appl. Surf. Sci., 351 897–903 (2015)

    Article  Google Scholar 

  27. Chen, CC, Lin, DJ, Don, TM, Huang, FH, Cheng, LP, “Preparation of Organic-Inorganic Nano-composites for Antireflection Coatings.” J. Non Cryst. Solids, 354 (32) 3828–3835 (2008)

    Article  Google Scholar 

  28. Chang, CC, Huang, FH, Chang, HH, Don, TM, Chen, CC, Cheng, LP, “Preparation of Water-Resistant Antifog Hard Coatings on Plastic Substrate.” Langmuir, 28 (49) 17193–17201 (2012)

    Article  Google Scholar 

  29. Chang, CC, Chen, CM, Hwang, FH, Chen, CC, Cheng, LP, “Preparation of Polymer/Silica Composite Antiglare Coatings on Poly(ethylene terphathalate) (PET) Substrates.” J. Coat. Technol. Res., 9 (5) 561–568 (2012)

    Article  Google Scholar 

  30. Chang, CC, Huang, FH, Lin, ZM, Cheng, LP, “Thermal Analyses of Dye Disperse Red 1 Grafted onto Silica Nanoparticles.” J. Coat. Technol. Res., 12 (4) 731–738 (2015)

    Article  Google Scholar 

  31. Gilberts, J, Tinnemans, AHA, “UV Curable Hard Transparent Hybrid Coating Materials on Polycarbonate Prepared by the Sol-Gel Method.” J. Sol Gel Sci. Technol., 11 (2) 153–159 (1998)

    Article  Google Scholar 

  32. Jeon, SJ, Lee, JJ, Kim, W, Chang, TS, Koo, SM, “Hard Coating Films Based on Organosilane-Modified Boehmite Nanoparticles under UV/Thermal Dual Curing.” Thin Solid Film, 516 (12) 3904–3909 (2008)

    Article  Google Scholar 

Download references

Acknowledgments

The authors thank the Ministry of Science and Technology of Taiwan for financial support (104-2632-E-032-001).

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Authors and Affiliations

  1. Department of Chemical and Materials Engineering, Tamkang University, Taipei, 25137, Taiwan

    Chao-Ching Chang, Yu-Ting Wu & Liao-Ping Cheng

  2. Energy and Opto-Electronic Materials Research Center, Tamkang University, Taipei, 25137, Taiwan

    Chao-Ching Chang & Liao-Ping Cheng

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  1. Chao-Ching Chang
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  2. Yu-Ting Wu
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Correspondence to Liao-Ping Cheng.

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Chang, CC., Wu, YT. & Cheng, LP. Preparation of HMDS-modified silica/polyacrylate hydrophobic hard coatings on PMMA substrates. J Coat Technol Res 13, 999–1007 (2016). https://doi.org/10.1007/s11998-016-9820-6

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