...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>New Journal of Chemistry >Development of self-poled PVDF/MWNT flexible nanocomposites with a boosted electroactive beta-phase
【24h】

Development of self-poled PVDF/MWNT flexible nanocomposites with a boosted electroactive beta-phase

机译：具有升压电活性β相的自极化PVDF / MWNT柔性纳米复合材料的研制

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 the present study, we report a simple fabrication method for poly(vinylidene fluoride) PVDF/MWCNT flexible nanocomposite films with a boosted electroactive phase that enhanced the dielectric and piezoelectric properties. The PVDF films were prepared by using the phase inversion method for which water was a non-solvent. Initially, neat PVDF films were prepared in a temperature-controlled non-solvent with varying temperatures from 5 degrees C to 40 degrees C respectively. Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), and differential scanning calorimetry (DSC) were carried out to confirm the electroactive phase and percentage crystallinity of the film. The electroactive beta-phase of PVDF exhibited an enhancement with a decrease in temperature. At 5 degrees C, PVDF showed a beta-fraction ofca.similar to 54.4%, with a percentage crystallinity ofca.similar to 57.4%. With the systematic addition of Multi-walled carbon nanotubes (MWCNTs), it was observed that the beta-fraction and the crystallinity of PVDF were enhanced. A dramatic improvement in the electroactive phase was observed upon the addition of 0.25 wt% MWCNTs, with a beta-phase content of PVDF ofca.similar to 93.8% and crystallinity ofca.similar to 61.8%. The augmented polar phase changed the dielectric and piezoelectric properties of the PVDF nanocomposites.
机译：在本研究中，我们报告了一种具有增强电活性的聚（偏二氟乙烯）PVDF / MWCNT柔性纳米复合膜的简单制造方法，其增强了电介质和压电性能。通过使用水是非溶剂的相反转方法制备PVDF膜。最初，在温度控制的非溶剂中制备整洁的PVDF膜，分别从5℃至40℃的不同温度。进行傅里叶变换红外光谱（FTIR），X射线粉末衍射（XRD）和差示扫描量热法（DSC）以确认膜的电活性相和百分比结晶度。 PVDF的电活性β相表现出随温度降低的增强。在5摄氏度下，PVDF显示β-馏分的β-分数至54.4％，百分比的结晶度为CaMilar至57.4％。随着多壁碳纳米管（MWCNT）的系统添加，观察到β-级分和PVDF的结晶度得到增强。在加入0.25wt％MWCNT时观察到电活性相的显着改善，具有PVDF的β相含量，PVDF为93.8％，结晶度为61.8％。增强极相改变了PVDF纳米复合材料的电介质和压电性能。

著录项

  • 来源
    《New Journal of Chemistry》 |2020年第34期|共14页
  • 作者

    Chandran Akash M.; Varun S.; Mural Prasanna Kumar S.;

  • 作者单位

    Natl Inst Technol Calicut Dept Chem Engn Mat Chem &

    Polymer Technol Grp Calicut 673601 Kerala India;

    Natl Inst Technol Calicut Dept Chem Engn Mat Chem &

    Polymer Technol Grp Calicut 673601 Kerala India;

    Natl Inst Technol Calicut Dept Chem Engn Mat Chem &

    Polymer Technol Grp Calicut 673601 Kerala India;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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