首页> 外文期刊>Journal of Applied Polymer Science >Polyvinyl alcohol/multi-walledcarbon nanotubes nanocomposites with ordered macroporous structures prepared byice-templating
【24h】

Polyvinyl alcohol/multi-walledcarbon nanotubes nanocomposites with ordered macroporous structures prepared byice-templating

机译:聚乙烯醇/多壁式碳纳米管纳米复合材料,具有有序的大孔结构制备的Byice-Templating

获取原文
获取原文并翻译 | 示例
           

摘要

We demonstrate in this study that it is possible to prepare three-dimensionally ordered macroporous polymer structures by ice-templating. Polyvinyl alcohol (PVA) was used as a model system in this study, but the processing route proposed here can be applied to other polymer systems. Multi-walled carbon nanotubes (MWCNTs) were incorporated into the PVA matrix at concentrations up to 12 wt% to investigate the influence of this addition on the mechanical and electrical properties of the obtained scaffolds. Different freezing routes were used, namely unidirectional, radial, and bidirectional freezing. The addition of MWCNTs had a strengthening effect on the scaffolds, especially when added at loadings around 2 wt%. Samples prepared by unidirectional freezing displayed larger mechanical stability, but materials derived from radial and bidirectional freezing showed a higher electrical conductivity. The obtained materials exhibited apparent porosity above 85%, which can be of great interest in many applications.
机译:我们在这项研究中证明,通过冰模板法制备三维有序大孔聚合物结构是可能的。本研究以聚乙烯醇(PVA)为模型体系,但本文提出的加工路线可应用于其他聚合物体系。将多壁碳纳米管(MWCNT)以高达12 wt%的浓度加入PVA基质中,以研究这种添加对所获得支架的机械和电气性能的影响。采用了不同的冷冻路线,即单向、径向和双向冷冻。多壁碳纳米管的加入对支架有增强作用,尤其是在负载量约为2 wt%时。单向冷冻制备的样品显示出更大的机械稳定性,但径向和双向冷冻制备的材料显示出更高的导电性。所得材料的表观孔隙率在85%以上,这在许多应用中具有重要意义。

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