Abstract
Poplar wood samples (2×2×2 cm3) were vacuum/pressure impregnated in alcoholic solution with 2-hydroxyethyl methacrylate (HEMA) and 3-(methacryloxy)propyltrimethoxysilane (MAPTES) in a mass ratio of 3/1 in the presence of catalytic amounts of azobisisobutyronitrile (AIBN). Because of their good solubility and permeability, the HEMA/MAPTES precursors evenly penetrate the poplar cell wall. The impregnated samples were heated at 75°C for 8 h, followed by a heating period at 103±2°C for 8 h, in the course of which an in situ polymerization occurred in the cell wall. The modified wood was characterized by Fourier transform infrared (FTIR) and Raman spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). Moreover, the dimensional stability of the modified wood was measured and found to be considerably improved.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This work was supported by the National Key Research and Development Plan of China (no. 2017YFD0600203).
Employment or leadership: None declared.
Honorarium: None declared.
References
Agarwal, U.P., Reiner, R.S. (2009) Near IR surface enhanced Raman spectrum of lignin. J. Raman Spectr. 40:1527–1534.10.1002/jrs.2294Search in Google Scholar
Ayrilmis, N., Dundar, T., Kaymakci, A., Ozdemir, F., Kwon, J.H. (2014) Mechanical and thermal properties of wood-plastic composites reinforced with hexagonal boron nitride. Polym. Compos. 35:194–200.10.1002/pc.22650Search in Google Scholar
Bergamonti, L., Berzolla, A., Chiappini, E., Feci, E., Maistrello, L., Palanti, S., Vaccari, G. (2017) Polyamidoamines (PAAs) functionalized with siloxanes as wood preservatives against fungi and insects. Holzforschung 71:65–75.10.1515/hf-2016-0010Search in Google Scholar
Budunoglu, H., Yildirim, A., Guler, M.O., Bayindir, M. (2011) Highly transparent, flexible, and thermally stable superhydrophobic ORMOSIL aerogel thin films. ACS Appl. Mater. Interfaces 3:539–545.10.1021/am101116bSearch in Google Scholar PubMed
Cai, S., Jebrane, M., Terziev, N. (2016) Curing of wood treated with vinyl acetate-epoxidized linseed oil copolymer (VAc-ELO). Holzforschung 70:305–312.10.1515/hf-2015-0092Search in Google Scholar
Chen, G.C. (2008) Synthesis of ethylene maleic anhydride copolymer containing fungicides and evaluation of their effect for wood decay resistance. Holzforschung 62:488–493.10.1515/HF.2008.062Search in Google Scholar
Chen, H., Lang, Q., Bi, Z., Miao, X., Li, Y., Pu, J. (2014) Impregnation of poplar wood (Populus euramericana) with methylolurea and sodium silicate sol and induction of in-situ gel polymerization by heating. Holzforschung 68:45–52.10.1515/hf-2013-0028Search in Google Scholar
Dong, Y., Wang, K., Yan, Y., Zhang, S., Li, J. (2016) Grafting polyethylene glycol dicrylate (PEGDA) to cell walls of poplar wood in two steps for improving dimensional stability and durability of the wood polymer composite. Holzforschung 70:919–926.10.1515/hf-2015-0239Search in Google Scholar
Ermeydan, M.A., Cabane, E., Masic, A., Koetz, J., Burgert, I. (2012) Flavonoid insertion into cell walls improves wood properties. ACS Appl. Mater. Interfaces 4:5782–5789.10.1021/am301266kSearch in Google Scholar PubMed
Ermeydan, M.A., Cabane, E., Gierlinger, N., Koetz, J., Burgert, I. (2014a) Improvement of wood material properties via in situ polymerization of styrene into tosylated cell walls. RSC Adv. 4:12981–12988.10.1039/c4ra00741gSearch in Google Scholar
Ermeydan, M.A., Cabane, E., Hass, P., Koetz, J., Burgert, I. (2014b) Fully biodegradable modification of wood for improvement of dimensional stability and water absorption properties by poly(ε-caprolactone) grafting into the cell walls. Green Chem. 16:3313–3321.10.1039/c4gc00194jSearch in Google Scholar
Faix, O., Andersons, B., Zakis, G. (1998) Determination of carbonyl groups of six round robin lignins by modified oximation and FTIR spectroscopy. Holzforschung 52:268–274.10.1515/hfsg.1998.52.3.268Search in Google Scholar
Gan, L., Guo, H., Wang, Z., Li, X., Peng, W., Wang, J., Su, M. (2013) A facile synthesis of graphite/silicon/graphene spherical composite anode for lithium-ion batteries. Electrochim. Acta 104:117–123.10.1016/j.electacta.2013.04.083Search in Google Scholar
Gierlinger, N., Schwanninger, M., Reinecke, A., Burgert, I. (2006) Molecular changes during tensile deformation of single wood fibers followed by Raman microscopy. Biomacromolecules 7:2077–2081.10.1021/bm060236gSearch in Google Scholar PubMed
Gierlinger, N., Keplinger, T., Harrington, M. (2012) Imaging of plant cell walls by confocal Raman microscopy. Nat. Protoc. 7:1694–1708.10.1038/nprot.2012.092Search in Google Scholar PubMed
Graupner, N. (2008) Application of lignin as natural adhesion promoter in cotton fibre-reinforced poly(lactic acid) (PLA) composites. J. Mater. Sci. 43:5222–5229.10.1007/s10853-008-2762-3Search in Google Scholar
Hung, K.C., Wu, J.H. (2017) Characteristics and thermal decomposition kinetics of wood-SiO2 composites derived by the sol-gel process. Holzforschung 71:233–240.10.1515/hf-2016-0126Search in Google Scholar
Kwok, A.Y., Qiao, G.G., Solomon, D.H. (2004) Interpenetrating amphiphilic polymer networks of poly(2-hydroxyethyl methacrylate) and poly(ethylene oxide). Chem. Mater. 16:5650–5658.10.1021/cm040349bSearch in Google Scholar
Lei, Z., Gao, J., Liu, X., Liu, D., Wang, Z. (2016) Poly(glycidyl methacrylate-co-2-hydroxyethyl methacrylate) brushes as peptide/protein microarray substrate for improving protein binding and functionality. ACS Appl. Mater. Interfaces 8:10174–10182.10.1021/acsami.6b01156Search in Google Scholar PubMed
Li, G., Ye, S., Morita, S., Nishida, T., Osawa, M. (2004) Hydrogen bonding on the surface of poly(2-methoxyethyl acrylate). J. Am. Chem. Soc. 126:12198–12199.10.1021/ja046183xSearch in Google Scholar PubMed
Liu, R., Luo, S., Cao, J., Chen, Y. (2016) Mechanical properties of wood flour/poly (lactic acid) composites coupled with waterborne silane-polyacrylate copolymer emulsion. Holzforschung 70:439–447.10.1515/hf-2015-0064Search in Google Scholar
Mackova, H., Plichta, Z., Hlidkova, H., Sedláček, O., Konefal, R., Sadakbayeva, Z., Kubinova, S. (2017) Reductively degradable poly(2-hydroxyethyl methacrylate) hydrogels with oriented porosity for tissue engineering applications. ACS Appl. Mater. Interfaces 9:10544–10553.10.1021/acsami.7b01513Search in Google Scholar PubMed
Noisser, T., Reichenauer, G., Husing, N. (2014) In situ modification of the silica backbone leading to highly porous monolithic hybrid organic-inorganic materials via ambient pressure drying. ACS Appl. Mater. Interfaces 6:1025–1029.10.1021/am404005gSearch in Google Scholar PubMed
Polakova, L., Raus, V., Kostka, L., Braunova, A., Pilar, J., Lobaz, V., Sedlakova, Z. (2015) Antioxidant properties of 2-hydroxyethyl methacrylate-based copolymers with incorporated sterically hindered amine. Biomacromolecules 16:2726–2734.10.1021/acs.biomac.5b00599Search in Google Scholar PubMed
Reza, M., Rojas, L.G., Kontturi, E., Vuorinen, T., Ruokolainen, J. (2013) Accessibility of cell wall lignin in solvent extraction of ultrathin spruce wood sections. ACS Sustain. Chem. Eng. 2:804–808.10.1021/sc400470mSearch in Google Scholar
Shea, K.J., Loy, D.A. (2001) Bridged polysilsesquioxanes. Molecular-engineered hybrid organic-inorganic materials. Chem. Mater. 13:3306–3319.Search in Google Scholar
Stewart, A., Schlosser, B., Douglas, E.P. (2013) Surface modification of cured cement pastes by silane coupling agents. ACS Appl. Mater. Interfaces 5:1218–1225.10.1021/am301967vSearch in Google Scholar PubMed
Trey, S., Jafarzadeh, S., Johansson, M. (2012) In situ polymerization of polyaniline in wood veneers. ACS Appl. Mater. Interfaces 4:1760–1769.10.1021/am300010sSearch in Google Scholar PubMed
Van Apeldoorn, A.A., Van Manen, H.J., Bezemer, J.M., De Bruijn, J.D., Van Blitterswijk, C.A., Otto, C. (2004) Raman imaging of PLGA microsphere degradation inside macrophages. J. Am. Chem. Soc. 126:13226–13227.10.1021/ja0459936Search in Google Scholar PubMed
Weaver, J.V.M., Bannister, I., Robinson, K.L., Bories-Azeau, X., Armes, S.P., Smallridge, M., McKenna, P. (2004) Stimulus-responsive water-soluble polymers based on 2-hydroxyethyl methacrylate. Macromolecules 37:2395–2403.10.1021/ma0356358Search in Google Scholar
Wu, Z., Dai, S., Overbury, S.H. (2009) Multiwavelength Raman spectroscopic study of silica-supported vanadium oxide catalysts. J. Phys. Chem. C 114:412–422.10.1021/jp9084876Search in Google Scholar
Yoshida, W., Castro, R.P., Jou, J.D., Cohen, Y. (2001) Multilayer alkoxysilane silylation of oxide surfaces. Langmuir 17:5882–5888.10.1021/la001780sSearch in Google Scholar
Zhang, X., Ji, Z., Zhou, X., Ma, J.F., Hu, Y.H., Xu, F. (2015) Method for automatically identifying spectra of different wood cell wall layers in Raman imaging data set. Anal. Chem. 87:1344–1350.10.1021/ac504144sSearch in Google Scholar PubMed
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