文献类型：期刊文献

英文题名：Research on the Preparation and Performance of Wood with High Negative Oxygen Ion Release Induced by Moisture

作者：Yin, Min[1] Zhang, Yuqi[1] Lu, Yun[2] Fu, Zongying[2] Mi, Haina[1] Yu, Jianfang[1] Wang, Ximing[1]

第一作者：Yin, Min

通信作者：Yu, JF[1];Wang, XM[1]

机构：[1]Inner Mongolia Agr Univ, Coll Mat Sci & Art Design, Hohhot 010018, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Key Lab Wood Sci & Technol, Natl Forestry & Grassland Adm, Beijing 100091, Peoples R China

年份：2025

卷号：15

期号：8

外文期刊名：COATINGS

收录：;EI(收录号：20253519085652);Scopus(收录号：2-s2.0-105014527583);WOS:【SCI-EXPANDED(收录号:WOS:001557318300001)】；

基金：We acknowledge funding support from the Inner Mongolia Autonomous Region Natural Science Foundation (2025LHMS03014); Special Fund for Enhancing Research Capability of Young Teachers at Inner Mongolia Agricultural University (BR230114) and Inner Mongolia Key Laboratory of Sandy Shrubs Fibrosis And Energy Development And Utilization (BR221017).

语种：英文

外文关键词：healthy wood; negative oxygen ions; hexagonal stone; functionalization; poplar wood

摘要：With the growing severity of environmental pollution, people are paying increasing attention to their health. However, naturally occurring wood with health benefits and applications in human healthcare is still scarce. Natural wood exhibits a limited negative oxygen ion release capacity, and this release has a short duration, failing to meet practical application requirements. This study innovatively developed a humidity-responsive, healthy wood material with a high negative oxygen ion release capacity based on fast-growing poplar. Through vacuum cyclic impregnation technology, hexagonal stone powder was infused into the pores of poplar wood, endowing it with the ability to continuously release negative oxygen ions. The healthy wood demonstrated a static average negative oxygen ion release rate of 537 ions/cm3 (peaking at 617 ions/cm3) and a dynamic average release rate of 3,170 ions/cm3 (peaking at 10,590 ions/cm3). The results showed that the particle size of hexagonal stone powder in suspension was influenced by the dispersants and dispersion processes. The composite dispersion process demonstrated optimal performance when using 0.5 wt% silane coupling agent gamma-(methacryloxy)propyltrimethoxysilane (KH570), achieving the smallest particle size of 8.93 mu m. The healthy wood demonstrated excellent impregnation performance, with a weight gain exceeding 14.61% and a liquid absorption rate surpassing 165.18%. The optimal impregnation cycle for vacuum circulation technology was determined to be six cycles, regardless of the type of dispersant. Compared with poplar wood, the hygroscopic swelling rate of healthy wood was lower, especially in PEG-treated samples, where the tangential, radial, longitudinal, and volumetric swelling rates decreased by 70.93%, 71.67%, 69.41%, and 71.35%, respectively. Combining hexagonal stone powder with fast-growing poplar wood can effectively enhance the release of negative oxygen ions. The static average release of negative oxygen ions from healthy wood is 1.44 times that of untreated hexagonal stone powder, and the dynamic release reaches 2 to 3 times the concentration of negative oxygen ions specified by national fresh air standards. The water-responsive mechanism revealed that negative oxygen ion release surged when ambient humidity exceeded 70%. This work proposes a sustainable and effective method to prepare healthy wood with permanent negative oxygen ion release capability. It demonstrates great potential for improving indoor air quality and enhancing human health.