...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Research >Silica replication of the hierarchical structure of wood with nanometer precision
【24h】

Silica replication of the hierarchical structure of wood with nanometer precision

机译：二氧化硅以纳米精度复制木材的层次结构

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The structural features of wood were replicated in silica on all levels of hierarchy from the macroscopic to the nanoscopic level of the cellulose elementary fibrils. This was achieved by a series of processing steps on spruce wood templates. Sodium chlorite was used to partially remove the lignin matrix from the wood cell walls, exposing the cellulose fibrils. These were optionally functionalized with maleic acid anhydride to stabilize the fibrillar structure and reduce the shrinkage of the template. Repeated infiltration with tetraethyl orthosilicate in ethanol deposited silica on the fibrils. Calcination at 500 °C removed the rest of the organic template by oxidation and resulted in the fusion of the deposited material into a positive silica replica. Small-angle x-ray scattering evidenced fibrillar structures parallel to the original cellulose fibrils at length scales in the order of 10 nm, suggesting the successful nanoscopic replication of the cellulose fibrils and their orientation.
机译：木材的结构特征在纤维素基本原纤维的宏观到纳米层次的所有层次上都在二氧化硅中复制。这是通过对云杉木模板执行一系列处理步骤来实现的。亚氯酸钠用于从木质细胞壁中部分除去木质素基质，从而暴露纤维素原纤维。这些任选地用马来酸酐官能化以稳定原纤维结构并减少模板的收缩。在乙醇中用原硅酸四乙酯反复渗透，使二氧化硅沉积在原纤维上。在500°C下煅烧可通过氧化除去其余的有机模板，并使沉积的材料融合成正的二氧化硅复制品。小角度X射线散射显示出与原始纤维素原纤维平行的原纤维结构，其长度尺度约为10 nm，这表明纤维素原纤维的成功纳米复制及其方向。

著录项

  • 来源
    《Journal of Materials Research》 |2011年第10期|p.1193-1202|共10页
  • 作者

    Daniel Van Opdenbosch; Gerhard Fritz-Popovski; Oskar Paris; Cordt Zollfrank;

  • 作者单位

    Department for Materials Science and Engineering—Glass and Ceramics, University of Erlangen-Nuremberg,D-91058 Erlangen, Germany;

    Institute of Physics, Montanuniversitaet Leoben, A-8700 Leoben, Austria;

    Institute of Physics, Montanuniversitaet Leoben, A-8700 Leoben, Austria;

    Department for Materials Science and Engineering—Glass and Ceramics, University of Erlangen-Nuremberg,D-91058 Erlangen, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号