AC electrical properties of CNF/PTFE composite. (2023)

• Record Type: Journal Article
• Authors: Uniyal, Divya; Ummer, ; Juyal, Sakshi; Deep Singh, Gagan; Mishra, Abhilasha; Mohmmad, Noor; Kukreti, Ravish; Juneja, Pradeep; Singh Gill, Fateh
• Is Part Of: Materials today. Volume 73(2023)Part 1
• Page Start: 88
• Page End: 91
• Publication Date: 2023
• Subjects: Carbon-nano-fiber -- Nanocomposites -- Negative capacitance -- Polytetrafluoroethylene -- Electrical property; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2022.09.333
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: In conductive nanocarbon-based polymer composite systems, carbon-nano-fibers (CNFs) provide good connectivity for electrical conduction due to their micrometer (μm) length compared to nano-meter (nm) length of carbon-nano-tubes (CNTs). However, an excellent electrical conductivity is demonstrated by the CNT compared to a CNF. This paper reports the AC electrical properties of CNF/PTFE composites prepared with partially coated CNF with PTFE. The sample structures were studied by means of Scanning Electron Microscopy (SEM). A negative capacitance (NC) has been observed in CNF/PTFE composites. The positive value of the imaginary part of impedance indicates the inductive nature of composites within applied frequencies (upto 1 MHz).