Nanocable-structured polymer/carbon nanotube composite with low dielectric loss and high impedance. (July 2017)

• Record Type: Journal Article
• Authors: Ren, Junwen; Yu, Demei; Feng, Lihua; Wang, Guolong; Lv, Guowei
• Is Part Of: Composites. Volume 98(2017)
• Page Start: 66
• Page End: 75
• Publication Date: 2017-07
• Subjects: A. Nanocomposites -- A. Carbon nanotubes and nanofibers -- B. Interface/interphase; Composite materials -- Periodicals; Manufacturing processes -- Periodicals; Composite materials; Manufacturing processes; Periodicals; 620.11805
• DOI: 10.1016/j.compositesa.2017.03.014
• Languages: English
• ISSNs: 1359-835X

Abstract

Abstract: A hierarchical nanocable structure was fulfilled by grafting poly(glycidyl methacrylate) from single walled carbon nanotubes (PGMA-SWCNTs) via activators regenerated by electron transfer-atom transfer radical polymerization (ARGET-ATRP). It was found that SWCNTs were parallelly separated by the grafted PGMA brushes in the nanocables. To investigate the advantages of nanocable architecture, a composite film was prepared through filtrating the uniform solution of PGMA-SWCNTs nanocables. The dielectric properties dependent on frequency and temperature revealed that high dielectric constants, high impedance and low dielectric loss were simultaneously achieved for the PGMA-SWCNTs film. Meanwhile, thermal conductive analysis showed that the PGMA-SWCNTs film possessed a high thermal conductivity. The unique nanocable structure and the excellent interfacial interaction between PGMA and SWCNTs were believed to be the critical causes for the high performance of the nanocomposite.