期刊
NANO ENERGY
卷 32, 期 -, 页码 73-79出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2016.12.021
关键词
Dielectrics; Dipolar polymers; Free volume; Blends
类别
资金
- U.S. Office of Naval Research at Penn State [N00014-14-1-0109]
- National Science Foundation
- DMR Polymers Program through at Penn State [DMR-1505953]
- NSF grants [OCI-1036215, ACI1615114, OCI-0725070, ACI-1238993]
- [N00014-14-1-0106]
- [N00014-16-1-2459]
- Direct For Computer & Info Scie & Enginr
- Office of Advanced Cyberinfrastructure (OAC) [1615114] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1505953] Funding Source: National Science Foundation
It is a great challenge in dielectric polymers to achieve a high dielectric constant while maintaining low dielectric loss and high operating temperatures. Here we report that by blending two glassy state dipolar polymers i.e., poly(arylene ether urea) (PEEU, K=4.7) and an aromatic polythiourea (ArPTU, K=4.4) to form a nanomixture, the resulting blend exhibits a very high dielectric constant, K=7.5, while maintaining low dielectric loss ( < 1%). The experimental and computer simulation results demonstrate that blending these dissimilar dipolar polymers causes a slight increase in the interchain spacing of the blend in its glassy state, thus reducing the barriers for reorientation of dipoles in the polymer chains along the applied electric field and generating a much higher dielectric response than the neat polymers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据