期刊文献+

Microstructures and mechanical properties of fiber cells from Echinocactus grusonii cactus spine 被引量:1

Microstructures and mechanical properties of fiber cells from Echinocactus grusonii cactus spine
原文传递
导出
摘要 Spine is the sharpest and hardest part of many plants, which contains highly aligned fiber cells. Here, we report the micro- structures and mechanical properties as well as their correlation of single spine fiber cells (SFCs) from the cactus Echinocactus grusonii. It is found that the SFCs are 0.32-0.57 mm in length and 4.6-6.0 gm in width, yielding an aspect ratio of 53-124. X-ray diffraction and Fourier transform infrared spectrophotometry show that the spine fiber is mainly made up of cellulose I with a crystallinity index up to -76%. Nanoindentation tests show that a natural spine presents a high modulus of -17 GPa. Removing hemicellulose and lignin from the SFC significantly reduces its modulus to -0.487 GPa, demonstrating the critical role of adhesives hemicellulose and lignin in affecting the mechanical properties of the SFCs. This finding sheds light on de- signing novel bio-inspired high-performance composite nanomaterials with aligned nanofibers, such as using hemicellulose and lignin as adhesive in making carbon nanotube fibers.
出处 《Science China(Technological Sciences)》 SCIE EI CAS 2014年第4期706-712,共7页 中国科学(技术科学英文版)
基金 supported by the National Key Basic Research Program of China("973"program)(Grant Nos.2013CB932604,2012CB933403) the National Natural Science Foundation of China(Grant No.91023026) the Fundamental Research Funds for the Central Universities(Grant NosNP2013309,NS2012043) Jiangsu Planned Projects for Postdoctoral Research Funds(Grant No.1302015B) the NUAA Research Initiative for New Stuff(Grant No.1011-YAH13042)
关键词 SPINE fibers MICROSTRUCTURE indentation modulus 纤维细胞 力学性能 微观结构 仙人掌 Fourier变换红外光谱 金琥 半纤维素 脊椎
  • 相关文献

参考文献31

  • 1Gibson L J. The hierarchical structure and mechanics of plant materials. J R Soc Interface, 2012, 9: 2749-2766.
  • 2Wimmer R, Lucas B N, Oliver W C, et al. Longitudinal hardness and young's modulus of spruce tracheid secondary walls using nanoindentation technique. Wood Sci Technol, 1997.31: 131-141.
  • 3Gindl W, Schober! T. The significance of the elastic modulus of wood cell walls obtained from nanoindentation measurements. Compos Part A-Appl S, 2004, 35: 1345-1349.
  • 4Zou L, Jin H, Lu W Y, et al. Nanoscale structural and mechanical characterization of the cell wall of bamboo fibers. Mater Sci Eng C, 2009,29: 1375-1379.
  • 5Yu Y, Fei B H, Zhang B, et al. Cell-wall mechanical properties of bamboo investigated by in-situ imaging nanoindentation. Wood Fiber Sci, 2007, 39: 527-535.
  • 6Huang F L, Guo W L. Structural and mechanical properties of the spines from echinocactus grusonii cactus. J Mater Sci, 2013, 48: 5420-5428.
  • 7Mauseth J D. Cytokinin-and gibberellic acid-induced effects on the determination and morphogenesis of leaf primordia in opuntia polyacantha (cactaceae). Am J Bot, 1977,64: 337-346.
  • 8Peharec P, Posilovit': H, Balen B, et al. Spine micromorphology of normal and hyperhydric mammillaria gracilis pfeiff. J Mierose-Oxford, 2010, 239: 78-86.
  • 9Ronel M, Lev Y S. Spiny plants in the archaeological record of israel. J Arid Environ, 2009, 73: 754-761.
  • 10Mosco A. Micro-morphology and anatomy of turbinicarpus (cactaceae) spines. Rev Mex Biodivers, 2009, 80: 119-128.

同被引文献9

引证文献1

二级引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部