Abstract

We propose the unique structure of highly dispersible single-walled carbon nanotubes (SWCNTs) in various solvents and polymers using the ZnO nano particle template. Buckled nanospring-shaped carbon nanotubes (NS-CNTs) were synthesized by a chemical reaction of ZnO nanoparticles with acid-treated SWCNTs and then dissolving ZnO through chemical etching. The unique structure of distorted hexagonal NS-CNTs encircled around ZnO nanoparticles was formed by the bending of SWCNTs caused by the agglomeration of chemically adsorbed Zn(OH)2, which is further crystallized as the polycrystalline ZnO inner core. The highly dispersible NS-CNTs could be incorporated in the poly[(vinylidenefluoride-co-trifluoroethylene] [P(VDF-TrFE)] copolymer, one of widely studied ferro- and piezo-electric polymer, up to the value of 15 wt% as nanofillers. The relative dielectric constant (K) of polymer nanocomposite, at 1 kHz, was greatly enhanced from 12.7 to the value of 62.5 at 11 wt% of NS-CNTs, corresponding to a 492% increase compared to that of pristine P(VDF-TrFE) with only a small dielectric loss tangent (D) of 0.1.

Details

Title
Highly Dispersible Buckled Nanospring Carbon Nanotubes for Polymer Nano Composites
Author
Lee, Y J 1 ; Ham, S R 2 ; Kim, J H 1 ; Yoo, T H 3 ; Kim, S R 4 ; Lee, Y T 3 ; Hwang, D K 2   VIAFID ORCID Logo  ; Angadi, B 5   VIAFID ORCID Logo  ; Seo, W S 6 ; Ju, B K 7 ; Choi, W K 2 

1  Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Sungbuk Gu, Seoul, Korea; Department of Electronic, Electrical, and Computer Engineering, College of Engineering, Korea University, Seongbuk-gu, Seoul, Korea 
2  Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Sungbuk Gu, Seoul, Korea; Division of Nano & Information Technology, KIST School, Korea University of Science and Technology (KUST), Seoul, Republic of Korea 
3  Center for Opto-Electronic Materials and Devices, Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology (KIST), Sungbuk Gu, Seoul, Korea 
4  Department of Polymer Engineering, Korea National University of Transportation, Chungju-si, Chungbuk, Korea 
5  Department of Physics, Bangalore University, Bangalore, India 
6  Korea Institute of Ceramic Engineering and Technology, Jinju-si, Gyeongsangnam-do, Korea 
7  Department of Electronic, Electrical, and Computer Engineering, College of Engineering, Korea University, Seongbuk-gu, Seoul, Korea 
Pages
1-10
Publication year
2018
Publication date
Mar 2018
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41598-018-23172-1
ProQuest document ID
2015393595
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.