Scholarlink

<p>In this study, the natural biomineralization process was simulated using NaClO<sub>2</sub> to remove lignin, thereby exposing the cellulose skeleton of poplar. The biocompatibility was enhanced through gelatin gel impregnation, which provided nucleation sites for subsequent SiO<sub>2</sub> mineralization. The in-situ mineralization of SiO<sub>2</sub> within the cell wall and cell cavity of poplar was achieved via the sol-gel method, utilizing tetraethyl orthosilicate as the silicon source, in conjunction with pH adjustment and a low-voltage electrostatic field. Consequently, SiO<sub>2</sub> mineralized delignification and hydrogel treated poplar wood composites (SDP) were prepared, featuring SiO<sub>2</sub> mineralized delignification and hydrogel treatment. The detection and analysis of the physical performance indicators of SDP revealed a weight% gain of 12.56%, an increase in absolute dry density, and significantly reduced radial and chordwise saturated water swelling rates and water absorption rates. Surface color and glossiness analyses indicated that the color of SDP darkened and its glossiness decreased. The water contact angle test demonstrated an enhancement in the hydrophilicity of the SDP surface. Fourier transform infrared spectroscopy analysis confirmed the formation of organic-inorganic hybrid structures between SiO<sub>2</sub> and poplar wood. Thermogravimetric analysis indicated that SDP exhibited improved thermal stability and increased activation energy, suggesting a more stable chemical structure and a more challenging pyrolysis reaction. Scanning electron microscopy and X-ray energy dispersive spectrometry revealed a uniform distribution of SiO<sub>2</sub> within SDP, resulting in a dense SiO<sub>2</sub> film layer and filler. This study presented a novel method for enhancing the performance and added value of fast-growing poplar wood, offering a new strategy for the development of high-performance biomass composite materials.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Study on properties of SiO2 mineralized delignification and hydrogel treated poplar wood composites

  • 期刊论文

  • 发表日期：

    2025年9月8日

查看全文
  • Quan Li,
  • Lin Li,
  • Keqing Wang,
  • Peng Peng,
  • Xinnian Guo,
  • Yanyan Sun,
  • Qingqiu Yan,
  • Huimin Zhang

摘要

In this study, the natural biomineralization process was simulated using NaClO2 to remove lignin, thereby exposing the cellulose skeleton of poplar. The biocompatibility was enhanced through gelatin gel impregnation, which provided nucleation sites for subsequent SiO2 mineralization. The in-situ mineralization of SiO2 within the cell wall and cell cavity of poplar was achieved via the sol-gel method, utilizing tetraethyl orthosilicate as the silicon source, in conjunction with pH adjustment and a low-voltage electrostatic field. Consequently, SiO2 mineralized delignification and hydrogel treated poplar wood composites (SDP) were prepared, featuring SiO2 mineralized delignification and hydrogel treatment. The detection and analysis of the physical performance indicators of SDP revealed a weight% gain of 12.56%, an increase in absolute dry density, and significantly reduced radial and chordwise saturated water swelling rates and water absorption rates. Surface color and glossiness analyses indicated that the color of SDP darkened and its glossiness decreased. The water contact angle test demonstrated an enhancement in the hydrophilicity of the SDP surface. Fourier transform infrared spectroscopy analysis confirmed the formation of organic-inorganic hybrid structures between SiO2 and poplar wood. Thermogravimetric analysis indicated that SDP exhibited improved thermal stability and increased activation energy, suggesting a more stable chemical structure and a more challenging pyrolysis reaction. Scanning electron microscopy and X-ray energy dispersive spectrometry revealed a uniform distribution of SiO2 within SDP, resulting in a dense SiO2 film layer and filler. This study presented a novel method for enhancing the performance and added value of fast-growing poplar wood, offering a new strategy for the development of high-performance biomass composite materials.