• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Effect of metal-oxide nanoparticle presence and alginate cross-linking on cellulose nanocrystal-based aerogels
【24h】

Effect of metal-oxide nanoparticle presence and alginate cross-linking on cellulose nanocrystal-based aerogels

机译：金属氧化物纳米颗粒存在和藻酸盐交联对纤维素纳米晶体的影响的影响

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

In a context where environmentally friendly materials development is becoming essential, cellulose is achieving a great importance. Cellulose nanocrystal (CNC) hierarchical and nanostructured porous network is a versatile nanoparticle support to fabricate nanocomposites for different solutions. In this work, CNC-based aerogels loaded with copper and palladium-oxide nanoparticles have been synthesized by nitrate precursor reduction followed by freeze-drying, after a scalable, surfactantless and room temperature process. The in situ produced nanoparticles are entrapped by CNC due to ionic interactions and aerogels show an uniformly colored macroscopic appearance. Metal oxide nanoparticle (MOx) mediated hybridization promotes remarkable changes in CNC wettability, free surface energy and thermal stability. These modifications are dependent on the type of metal precursor and concentration and have been analyzed by different techniques. Overall, obtained CNC hybrid aerogels are lightweight (12-30 mg(.)cm(-3)) and highly porous (98%-99%). Finally, more mechanically resistant hybrid aerogels have been synthesized through the incorporation of sodium alginate and tested by compressive stress measurements.
机译：在环保材料开发变得至关重要的背景下，纤维素正变得非常重要。纤维素纳米晶体（CNC）分级和纳米结构多孔网络是一种多功能的纳米颗粒载体，用于制备不同溶液的纳米复合材料。在这项工作中，通过硝酸盐前体还原和冷冻干燥，在可伸缩、无表面和室温过程后，合成了负载有铜和氧化钯纳米颗粒的CNC基气凝胶。由于离子相互作用，原位制备的纳米颗粒被CNC包裹，气凝胶呈现出均匀的宏观颜色。金属氧化物纳米粒子（MOx）介导的杂化促进CNC润湿性、自由表面能和热稳定性的显著变化。这些改性取决于金属前驱体的类型和浓度，并通过不同的技术进行了分析。总体而言，获得的CNC混合气凝胶重量较轻（12-30 mg（.）cm（-3））和高度多孔（98%-99%）。最后，通过加入海藻酸钠合成了更耐机械性的混合气凝胶，并通过压应力测量进行了测试。

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