High dielectric response in dilute nanocomposites via hierarchical tailored polymer nanostructures

被引:12
作者
Chen, Xin [1 ]
Zhang, Qiyan [2 ]
Liu, Ziyu [3 ]
Sun, Yifei [3 ]
Zhang, Q. M. [2 ,3 ]
机构
[1] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA
[3] Penn State Univ, Sch Elect Engn & Comp Sci, University Pk, PA 16802 USA
关键词
ENERGY DENSITY; BLENDS;
D O I
10.1063/5.0087495
中图分类号
O59 [应用物理学];
学科分类号
摘要
This paper presents a hierarchically designed polymer nanocomposite approach in which nanofillers at ultralow volume loading generate large dielectric enhancement in blends of high temperature dielectric polymers with tailored nanostructures. We blend poly(1,4-phenylenen ether sulfone) (PES) with polymers, such as polyetherimide (PEI), that possess more coiled chain conformations to tailor polymer nano-morphologies. Making use of such blends as the matrix, dilute nanocomposites with 0.65 vol. % loading of alumina nanoparticles (20 nm size) generate a marked enhancement in dielectric performance, i.e., raising the dielectric constant K from PES K = 3.9 (and PEI K = 3.2) to the dilute nanocomposites K = 7.6, a much higher enhancement compared with the dilute nanocomposites employing neat polymers as the matrix. The results show that polymer blends with tailored nano-morphologies as the matrix can lead to higher dielectric enhancement in dilute nanocomposites compared with neat polymers as the matrix.& nbsp;Published under an exclusive license by AIP Publishing.
引用
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页数:5
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