• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Easily deconstructed, high aspect ratio cellulose nanofibres from Triodia pungens; an abundant grass of Australia's arid zone
【24h】

Easily deconstructed, high aspect ratio cellulose nanofibres from Triodia pungens; an abundant grass of Australia's arid zone

机译：Triodia pungens易于解构的高长径比纤维素纳米纤维;澳大利亚干旱地区的草丛

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 production of high aspect ratio cellulose nanofibres without resorting to very harsh mechanical and/or chemical processing steps remains a challenge that hinders progress in the fast-moving nanocellulose field. In response to this challenge, herein we report the preparation of high aspect ratio (>500) and small diameter (<8 nm) cellulose nanofibrils through the deconstruction of Australian native 'spinifex' grass (Triodia pungens) by applying very mild pulping conditions combined with only one pass of high pressure homogenization. Spinifex grass has an unusually high hemicellulose content, which facilitates this easy fibrillation process. Tensile measurements of the nanopaper produced by vacuum filtration indicated a high toughness of about 12 MJ m(-3), a tensile strength of 82 MPa and a high elongation at break of 18%. The transverse elastic modulus of single nanofibrils analysed by AM-FM is in the range of 19-24 GPa. Under these mild processing conditions, Triodia pungens nanofibrils retained their crystallinity.
机译：在不依靠非常苛刻的机械和/或化学加工步骤的情况下生产高长径比的纤维素纳米纤维仍然是阻碍快速发展的纳米纤维素领域发展的挑战。为应对这一挑战，在此我们报道通过结合非常温和的制浆条件，通过解构澳大利亚本土的“纺锤”草（Triodia pungens）来制备高长径比（> 500）和小直径（<8 nm）的纤维素纳米原纤维。仅进行一次高压均质。菠菜草具有异常高的半纤维素含量，这促进了这种简单的原纤化过程。通过真空过滤生产的纳米纸的拉伸测量表明，高韧性约为12 MJ m（-3），抗张强度为82 MPa，断裂伸长率高为18％。通过AM-FM分析的单个纳米原纤维的横向弹性模量在19-24 GPa的范围内。在这些温和的加工条件下，重症Triodia pungens纳米原纤维保留了其结晶度。

著录项

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