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

Jie Gao,Xinxiang Zhang,Wensheng Lin,Wenbin Yang,Shumin Lin,Ran Li

doi:10.3390/polym13010124

Jie Gao, Xinxiang Zhang + Show 4 more

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https://doi.org/10.3390/polym13010124

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Journal: Polymers	Publication Date: Dec 30, 2020
Citations: 4	License type: CC BY 4.0

Affiliation: Fujian Agriculture and Forestry University

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.

Highlights

Component Method for FabricationThe application of wood in outdoor environments is limited due to its highly hydrophilic property, which results in wood deformation, decay, and strength degradation significantly reducing the wood’s service life [1,2,3,4]
PMHS and inhibitor play the key role in adjusting the properties of modifier solution and the modified wood
The water contact angle (WCA) properties of the hydrophobic wood fabricated by a two-component package method

Summary

Introduction

Component Method for FabricationThe application of wood in outdoor environments is limited due to its highly hydrophilic property, which results in wood deformation, decay, and strength degradation significantly reducing the wood’s service life [1,2,3,4]. The traditional methods of wood modification include resin and oil treatment [5,6], heat treatment [7,8], surface chemical treatment (including acetylation treatment, grafting of hydrophobic carbon chains, grafting polymers) [9,10,11,12], etc. These traditional treatment methods can slow down the absorption of moisture by wood but cannot fundamentally inhibit the intrusion of moisture into wood.

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Conclusion