• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Electrorheology of SI-ATRP-modified graphene oxide particles with poly(butyl methacrylate): effect of reduction and compatibility with silicone oil
【24h】

Electrorheology of SI-ATRP-modified graphene oxide particles with poly(butyl methacrylate): effect of reduction and compatibility with silicone oil

机译：具有聚（甲基丙烯酸丁酯）的Si-ATRP改性石墨烯氧化物颗粒的电风学：减少和硅油的效果

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

Surface-initiated atom transfer radical polymerization (SI-ATRP) was used to modify graphene oxide (GO) particles with poly(butyl methacrylate) (PBMA) chains. This procedure facilitated the single-step fabrication of a hybrid material with tailored conductivity for the preparation of a suspension in silicone oil with enhanced sedimentation stability and improved electrorheological (ER) activity. PBMA was characterized using various techniques, such as gel permeation chromatography (GPC) and H-1 NMR spectroscopy. Thermogravimetric analysis through on-line investigation of the Fourier transform infrared spectra, together with transmission electron microscopy, X-ray photoelectron microscopy, and atomic force microscopy, were successfully used to confirm GO surface modification. The ER performance was investigated using optical microscopy images and steady shear rheometry, and the mechanism of the internal chain-like structure formation was elucidated. The dielectric properties confirmed enhanced ER performance owing to an increase in relaxation strength to 1.36 and decrease in relaxation time to 5 x 10(-3) s. The compatibility between GO and silicone oil was significantly influenced by covalently bonded PBMA polymer brushes on the GO surface, showing enhanced compatibility with silicone oil, which resulted in the considerably improved sedimentation stability. Furthermore, a controlled degree of reduction of the GO surface ensured that the suspension had improved ER properties.
机译：表面引发的原子转移自由基聚合（Si-ATRP）用于用聚（甲基丙烯酸丁酯）（PBMA）链改性石墨烯（GO）颗粒。该程序促进了具有定制导电性的杂化材料的单步制造，用于制备硅油中的悬浮液，具有增强的沉降稳定性和改善的电气学（ER）活性。使用各种技术，例如凝胶渗透色谱（GPC）和H-1 NMR光谱，其特征在于PBMA。通过对傅里叶变换红外光谱的在线调查的热重分析，以及透射电子显微镜，X射线光电子显微镜和原子力显微镜，成功地用于确认转接表面改性。使用光学显微镜图像和稳定剪切流变学研究了ER性能，并阐明了内链状结构的机理。电介质特性证实了由于弛豫强度的增加至1.36并减少弛豫时间至5×10（3）秒。 Go和硅油之间的相容性受到去表面上共价键合的PBMA聚合物刷的显着影响，显示出与硅油的增强相容性，这导致了显着提高的沉降稳定性。此外，对去表面的受控减少程度确保悬浮液具有改善的ER性能。

著录项

  • 来源
    《RSC Advances》 |2019年第3期|共12页
  • 作者

    Mrlik Miroslav; Ilcikova Marketa; Osicka Josef; Kutalkova Erika; Minarik Antonin; Vesel Alenka; Mosnacek Jaroslav;

  • 作者单位

    Tomas Bata Univ Zlin Univ Inst Ctr Polymer Syst Trida T Bati 5678 Zlin 76001 Czech Republic;

    Tomas Bata Univ Zlin Univ Inst Ctr Polymer Syst Trida T Bati 5678 Zlin 76001 Czech Republic;

    Tomas Bata Univ Zlin Univ Inst Ctr Polymer Syst Trida T Bati 5678 Zlin 76001 Czech Republic;

    Tomas Bata Univ Zlin Univ Inst Ctr Polymer Syst Trida T Bati 5678 Zlin 76001 Czech Republic;

    Tomas Bata Univ Zlin Univ Inst Ctr Polymer Syst Trida T Bati 5678 Zlin 76001 Czech Republic;

    Jozef Stefan Inst Jamova 39 Ljubljana 1000 Slovenia;

    Slovak Acad Sci Inst Polymer Dubravska Cesta 9 Bratislava 84541 45 Slovakia;

  • 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