• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polymers >The Impact of Polymer Grafting from a Graphene Oxide Surface on Its Compatibility with a PDMS Matrix and the Light-Induced Actuation of the Composites
【24h】

The Impact of Polymer Grafting from a Graphene Oxide Surface on Its Compatibility with a PDMS Matrix and the Light-Induced Actuation of the Composites

机译：从氧化石墨烯表面接枝聚合物对其与PDMS基质相容性以及复合材料的光致驱动的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Poly(dimethyl siloxane) (PDMS)-based materials with improved photoactuation properties were prepared by the incorporation of polymer-grafted graphene oxide particles. The modification of the graphene oxide (GO) surface was achieved via a surface initiated atom transfer radical polymerization (SI ATRP) of methyl methacrylate and butyl methacrylate. The modification was confirmed by thermogravimetric analysis, infrared spectroscopy and electron microscopy. The GO surface reduction during the SI ATRP was investigated using Raman spectroscopy and conductivity measurements. Contact angle measurements, dielectric spectroscopy and dynamic mechanical analyses were used to investigate the compatibility of the GO filler with the PDMS matrix and the influence of the GO surface modification on its physical properties and the interactions with the matrix. Finally, the thermal conductivity and photoactuation properties of the PDMS matrix and composites were compared. The incorporation of GO with grafted polymer chains, especially poly( n -butyl methacrylate), into the PDMS matrix improved the compatibility of the GO filler with the matrix, increased the energy dissipation due to the improved flexibility of the PDMS chains, enhanced the damping behavior and increased the thermal conductivity. All the changes in the properties positively affected the photoactuation behavior of the PDMS composites containing polymer-grafted GO.
机译：通过掺入聚合物接枝的氧化石墨烯颗粒，制备了具有改善的光致动特性的基于聚二甲基硅氧烷（PDMS）的材料。氧化石墨烯（GO）表面的改性是通过甲基丙烯酸甲酯和甲基丙烯酸丁酯的表面引发的原子转移自由基聚合（SI ATRP）实现的。通过热重分析，红外光谱和电子显微镜证实了该修饰。使用拉曼光谱和电导率测量研究了SI ATRP过程中GO表面的还原。接触角测量，介电谱和动态力学分析被用于研究GO填料与PDMS基质的相容性以及GO表面改性对其物理性质和与基质的相互作用的影响。最后，比较了PDMS基体和复合材料的热导率和光致动特性。将GO与接枝的聚合物链（尤其是聚甲基丙烯酸正丁酯）结合到PDMS基质中，改善了GO填料与基质的相容性，由于PDMS链的柔韧性得到改善，从而增加了能量消耗，增强了阻尼行为并增加了热导率。所有性质的变化都积极影响了含有聚合物接枝GO的PDMS复合材料的光致驱动行为。

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