Nano-scale viscoelastic properties of polymer materials
Nano-scale viscoelastic properties of polymer materials
复制标题
高分子材料的纳米级粘弹性能
DOI：
10.1557/proc-505-103
复制
发表时间：
1997
期刊：
影响因子：
--
通讯作者：
J. Pethica
中科院分区：
文献类型：
--
作者：
S. Asif;J. Pethica
将纳米压痕中的交流力调制技术推广到高分子材料的动态粘弹性研究中。与频率和温度相关的损耗和储能模量、时间-温度叠加、机械弛豫和弛豫过程的活化能都可以从纳米尺度接触直接测量。PMMA和聚异戊二烯获得的结果是在良好的协议与文献报道的结果从传统的动态测试。该技术可能对聚合物薄膜具有特别的价值。
The AC force modulation technique in nano indentation has been extended to study the dynamic viscoelastic properties of polymer materials. The frequency and temperature dependent loss and storage modulus, the time-temperature superposition, the mechanical relaxation and the activation energy for the relaxation process can all be directly measured from nano scale contact. The results obtained for PMMA and Polyisoprene are in good agreement with the reported literature results obtained from conventional dynamic testing. The technique is likely to be of particular value for polymer thin films.