Abstract
Poly(vinyl) alcohol (PVA)/nanosilica (SiO2) based electrospun nanofibers has been deposited on wood substrate by means of the roll electrospinning process. The nanofibrous coating was hydrophobized by self-assembled monolayers of octadecyltrichlorosilane (OTS) via a sol-gel dipping process. The PVA/SiO2 nanofiber coating and OTS hydrophobized coating were characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and energy dispersive X-ray analysis (EDXA). All methods confirmed the formation of OTS monolayers on hybrid coatings. The adhesive strength and resistance to scratch of nanofibers coating was also evaluated.
Acknowledgments
This research work was supported by the Technology Agency of the Czech Republic grant (TAČR – TA04010837). We acknowledge the support of Ministry of Education, Youth and Sports, Czech Republic, within National Sustainability Programme I (NPU I), project No. LO1605 – University Centre for Energy Efficient Buildings – Sustainability Phase. Financial support of the Slovenian Research Agency through the research programme P4-0015 ‘‘Wood and lignocellulose composites’’ is also gratefully acknowledged.
References
Avramidis, G., Hauswald, E., Lyapin, A, Militz, H., Viol, W., Wolkenhauer, A. (2009) Plasma treatment of wood and wood based materials to generate hydrophilic or hydrophobic surface characteristics. Wood Mater. Sci. Eng. 4:52–60.10.1080/17480270903281642Search in Google Scholar
Chahal, S., Hussain, F.S.J., Kumar, A., Yusoff, M.M., Rasad, M.S.B.A. (2015) Electrospun hydroxyethyl cellulose nanofibers functionalized with calcium phosphate coating for bone tissue engineering. RSC Adv. 5:29497–29504.10.1039/C4RA17087CSearch in Google Scholar
Chahal, S., Hussain, F.S.J., Kumar, A., Rasad, M.S.B.A., Yusoff, M.M. (2016) Fabrication, characterization and in vitro biocompatibility of electrospun hydroxyethyl cellulose/poly (vinyl) alcohol nanofibrous composite biomaterial for bone tissue engineering. Chem. Eng. Sci. 144:17–29.10.1016/j.ces.2015.12.030Search in Google Scholar
Cristea, M.V., Riedl, B., Blanchet, P. (2010) Enhancing the performance of exterior waterborne coatings for wood by inorganic nanosized UV absorbers. Prog. Org. Coat. 69:432–441.10.1016/j.porgcoat.2010.08.006Search in Google Scholar
Cristea, M. V., Riedl, B., Blanchet, P. (2011) Effect of addition of nanosized UV absorbers on the physico-mechanical and thermal properties of an exterior waterborne stain for wood. Prog. Org. Coat. 72:755–762.10.1016/j.porgcoat.2011.08.007Search in Google Scholar
EN ISO 1518 (2000). Paints and varnishes – Scratch test (ISO 1518:1992), European Committee for Standardization, Brussels.Search in Google Scholar
Faix, O. (1991) Classification of lignins from different botanical origins by FT-IR spectroscopy. Holzforschung 45:21–28.10.1515/hfsg.1991.45.s1.21Search in Google Scholar
Fu, Y., Yu, H., Sun, Q., Li, G., Liu, Y. (2012) Testing of the superhydrophobicity of a zinc oxide nanorod array coating on wood surface prepared by hydrothermal treatment. Holzforschung 66: 739–744.10.1515/hf-2011-0261Search in Google Scholar
Gao, L., Lu, Y., Li, J., Sun, Q. (2016) Superhydrophobic conductive wood with oil repellency obtained by coating with silver nanoparticles modified by fluoroalkyl silane. Holzforschung 70:63–68.10.1515/hf-2014-0226Search in Google Scholar
Gérardin, P., Petric, M., Petrissans, M., Lambert, J., Ehrhardt, J.J. (2007) Evolution of wood surface free energy after heat treatment. Polym. Degrad. Stab. 92:653–657.10.1016/j.polymdegradstab.2007.01.016Search in Google Scholar
Gholamiyan, H., Tarmian, A., Ranjbar, Z., Abdulkhani, A., Azadfallah, M., Mai, C., (2016) Silane nanofilm formation by sol-gel processes for promoting adhesion of waterborne and solvent-borne coatings to wood surface. Holzforschung 70:429–437.10.1515/hf-2015-0072Search in Google Scholar
Guo, H., Fuchs, P., Cabane, E., Michen, B., Hagendorfer, H., Romanyuk, Y.E., Burgert, I. (2016) UV-protection of wood surfaces by controlled morphology fine-tuning of ZnO nanostructures. Holzforschung 70:699–708.10.1515/hf-2015-0185Search in Google Scholar
Hsieh, C.T., Chang, B.S., Lin, J.Y. (2011) Improvement of water and oil repellency on wood substrates by using fluorinated silica nanocoating. Appl. Surface Sci. 257:7997–8002.10.1016/j.apsusc.2011.04.071Search in Google Scholar
Jirsak, O., Sanetrnik, F., Lukas, D., Kotek, V., Martinova, L., Chaloupek, J. (2004) A method of nanofibres production from a polymer solution using electrostatic spinning and a device for carrying out the method. European Patent: EP 1 (673 493).Search in Google Scholar
Jung, M.H., Choi, H.S. (2009) Characterization of octadecyltrichlorosilane self-assembled monolayers on silicon (100) surface. Korean J. Chem. Eng. 26:1778–1784.10.1007/s11814-009-0249-9Search in Google Scholar
Kumar, A., Petrič, M., Kričej, B.,Žigon, J., Tywoniak, J., Hajek, P., Škapin, A.S., Pavlič, M. (2015) Liquefied-wood-based polyurethane–nanosilica hybrid coatings and hydrophobization by self-assembled monolayers of orthotrichlorosilane (OTS). ACS Sustainable Chem. Eng. 3:2533–2541.10.1021/acssuschemeng.5b00723Search in Google Scholar
Kumar, A., Ryparová, P., Škapin, A.S., Humar, M., Pavlič, M., Tywoniak, J., Hajek, P., Žigon, J., Petrič, M. (2016a) Influence of surface modification of wood with octadecyltrichlorosilane on its dimensional stability and resistance against Coniophora puteana and molds. Cellulose 23:3249–3263.10.1007/s10570-016-1009-8Search in Google Scholar
Kumar, A., Staněk, K., Ryparová, P., Hajek, P., Tywoniak, J. (2016b) Hydrophobic treatment of wood fibrous thermal insulator by octadecyltrichlorosilane and its influence on hygric properties and resistance against moulds. Composites Part B 106:285–293.10.1016/j.compositesb.2016.09.034Search in Google Scholar
Li, J., Yu, H., Sun, Q., Liu, Y., Cui, Y., Lu, Y. (2010) Growth of TiO2 coating on wood surface using controlled hydrothermal method at low temperatures. Appl. Surf. Sci. 256:5046–5050.10.1016/j.apsusc.2010.03.053Search in Google Scholar
Liu, F., Wang, S., Zhang, M., Ma, M., Wang, C., Li, J. (2013) Improvement of mechanical robustness of the superhydrophobic wood surface by coating PVA/SiO2 composite polymer. Appl. Surf. Sci. 280:686–692.10.1016/j.apsusc.2013.05.043Search in Google Scholar
Liu, F., Gao, Z., Zang, D., Wang, C., Li, J. (2015) Mechanical stability of superhydrophobic epoxy/silica coating for better water resistance of wood. Holzforschung 69:367−374.10.1515/hf-2014-0077Search in Google Scholar
Lu, Y., Xiao, S., Gao, R., Li, J., Sun, Q. (2014) Improved weathering performance and wettability of wood protected by CeO2 coating deposited onto the surface. Holzforschung 68:345–351.10.1515/hf-2013-0119Search in Google Scholar
Mallapragada, S.K., Peppas, N.A. (1996) Dissolution mechanism of semicrystalline poly (vinyl alcohol) in water. J. Polym. Sci. Part B: Polym. Phys. 34:1339–1346.10.1002/(SICI)1099-0488(199605)34:7<1339::AID-POLB15>3.0.CO;2-BSearch in Google Scholar
Maréchal, Y., Chanzy, H. (2000) The hydrogen bond network in I β cellulose as observed by infrared spectrometry. J. Mol. Struct. 523:183–196.10.1016/S0022-2860(99)00389-0Search in Google Scholar
Moghaddam, M.S., Heydari, G., Tuominen, M., Fielden, M., Haapanen, J., Mäkelä, J.M., Wålinder, M.E., Claesson, P.M., Swerin, A. (2016) Hydrophobisation of wood surfaces by combining liquid flame spray (LFS) and plasma treatment: dynamic wetting properties. Holzforschung 70:527–537.10.1515/hf-2015-0148Search in Google Scholar
Pandey, K.K. (1999) A study of chemical structure of soft and hardwood and wood polymers by FTIR spectroscopy. J. Appl. Polym. Sci. 71:1969–1975.10.1002/(SICI)1097-4628(19990321)71:12<1969::AID-APP6>3.0.CO;2-DSearch in Google Scholar
Pori, P., Vilčnik, A., Petrič, M., Škapin, A.S., Mihelčič, M., Vuk, A.Š., Novak, U., Orel, B. (2016). Structural studies of TiO2/wood coatings prepared by hydrothermal deposition of rutile particles from TiCl 4 aqueous solutions on spruce (Picea abies) wood. Appl. Surf. Sci. 372:125–138.10.1016/j.apsusc.2016.03.065Search in Google Scholar
Samyn, P., Stanssens, D., Paredes, A., Becker, G. (2014) Performance of organic nanoparticle coatings for hydrophobization of hardwood surfaces. J. Coat. Technol. Res. 11:461–471.10.1007/s11998-014-9576-9Search in Google Scholar
Sóbe, G, Brook, M.A. (2001). Hydrophobization of wood surfaces: covalent grafting of silicone polymers. Wood Sci. Technol. 35:269–282.10.1007/s002260100091Search in Google Scholar
Sutka, A., Gaidukov, S., Timusk, M., Gravitis, J., Kukle, S. (2015) Enhanced stability of PVA electrospun fibers in water by adding cellulose nanocrystals. Holzforschung 69:737–743.10.1515/hf-2014-0277Search in Google Scholar
Tshabalala, M.A, Sung, L.P. (2007) Wood surface modification by in situ sol–gel deposition of hybrid inorganic–organic thin films. J. Coat. Technol. Res. 4:483–490.10.1007/s11998-007-9033-0Search in Google Scholar
Wang, X., Chai, Y., Liu, J. (2013) Formation of highly hydrophobic wood surfaces using silica nanoparticles modified with long-chain alkylsilane. Holzforschung 67:667–672.10.1515/hf-2012-0153Search in Google Scholar
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