首页> 外文会议>TAPPI International Conference on Nanotechnology for Renewable Materials >Comparative Kinetic Study of the Thermal Decomposition of Nanocellulose Produced by H2SO4 Hydrolysis, TEMPO, and AVAP~R Processes (PPT)
【24h】

Comparative Kinetic Study of the Thermal Decomposition of Nanocellulose Produced by H2SO4 Hydrolysis, TEMPO, and AVAP~R Processes (PPT)

机译:H2SO4水解,速度和AVAP〜R过程中纳米纤维素热分解的比较动力学研究(PPT)

获取原文
获取外文期刊封面目录资料

摘要

E_a and A factor for the thermal decomposition of several CNCs and CNFs have been determined by TGA. The lower A factor for the AVAP CNCs and CNFs relative to the CNCs and CNFs prepared by the H2SO4 and TEMPO processes, respectively, more than compensates for the lower E_a of decomposition as determined by TGA, thus leading to higher thermal stability of the AVAP CNCs and CNFs. Degree of crystallinity and crystal quality may play a major role in deterring thermal stability of CNCs and CNFs. Cellulose crystals may be disrupted by incorporation of sulfate esters or carboxylate groups. X-ray Diffraction (XRD) analysis is being carried out to determine the degree of crystallinity and the crystal quality of these CNCs and CNFs.
机译:通过TGA确定了e_a和若干CNC和CNF的热分解的因素。 AVAP CNC和CNFS相对于由H2SO4和TEMPO过程编制的CNC和CNF的较低的因素分别比通过TGA确定的分解的下部E_A的较低E_A,从而导致AVAP CNC的较高稳定性和cnfs。结晶度和晶体质量可能在阻止CNC和CNF的热稳定性方面发挥重要作用。纤维素晶体可以通过掺入硫酸盐或羧酸盐基团来破坏。正在进行X射线衍射(XRD)分析以确定这些CNC和CNF的结晶度和晶体质量。

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