Environment-Friendly and Two-Component Method for Fabrication of Highly Hydrophobic Wood Using Poly(methylhydrogen)siloxane

Abstract

Practical application of wood remains a great challenge because of its highly hydrophilic property. In this work, highly hydrophobic wood was produced using an environment-friendly and two-component package method. Poly(methylhydrogen)siloxane (PMHS) and inhibitor played the key role in the hydrophobicity of wood and the assembly process. The two-component package mechanism was discussed in detail. As a result, the water contact angles of the modified wood surface for the radial and cross sections were 139.5° and 152.9°, respectively, which provided the resultant wood high hydrophobicity and dimensional stability. The two-component package method afforded the wood good anti-fouling property and UV-resistance. In addition, the two-component package method could also be applied in functionalization of filter paper for oil/water separation.

Investigation and effect of PVC and PVTMS on sintering, physical and mechanical features of chipboard wood

“…The XPS spectrum of chipboard wood usually contains peaks corresponding to the photoelectron emissions of elements such as carbon (C), oxygen (O), nitrogen (N) and possibly other elements present in the wood or in the surface treatment. By analyzing the positions and intensities of these peaks, researchers can identify the elemental composition of the chipboard wood surface and gain insight into the chemical environment [33]. Overall, XPS analysis is a powerful tool for characterizing the surface chemistry of chipboard wood and gaining insight into its composition and properties at the atomic level.…”

Trends in Chemical Wood Surface Improvements and Modifications: A Review of the Last Five Years

“…The hydrophobization of the micro-/nanoscale architecture could also be achieved by replacing the resins with low surface free energy components [113][114][115][116][117][118][119][120][121][122][123][124][125][126][127][128][129][130][131][132]. As a general rule, these coatings showed superhydrophobicity (contact angle > 150 • , roll-off angle < 10 • ), high resistance to mechanical wear (abrasion, cutting, etc.…”

“…Conversely, a self-healing coating prepared by Wang et al with SiO 2 and perfluorooctyltriethoxysilane could not only self-repair upon taking damage without needing any external stimulus, but its self-healing ability could be replenished by spraying a coating solution [133]. Additionally, since superhydrophobicity (contact angle > 150 • ) offers arguably greater performance than actually necessary in practice [124], another solution would be to accept a lower contact angle to improve the durability of the wood surface. Since superhydrophobicity requires a quite strict and fragile architecture at the nanometric level, a rougher surface with low energy could allow for a satisfying hydrophobicity while being more resistant to damages.…”