Intrinsic low-dielectric constant and low-dielectric loss aliphatic-aromatic copolyimides: The effect of chemical structureopen access
- Authors
- Lee, Jiwon; Yoo, Sungmi; Kim, Dongkyu; Kim, Yun Ho; Park, Sungmin; Park, No Kyun; So, Yujin; Kim, Jinsoo; Park, Jongmin; Ko, Min Jae; Won, Jong Chan
- Issue Date
- Dec-2022
- Publisher
- Elsevier Ltd
- Keywords
- Low dielectric material; Low dielectric polyimide; Copolyimide; Chain relaxation
- Citation
- Materials Today Communications, v.33, pp.1 - 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- Materials Today Communications
- Volume
- 33
- Start Page
- 1
- End Page
- 8
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/186110
- DOI
- 10.1016/j.mtcomm.2022.104479
- ISSN
- 2352-4928
- Abstract
- Low-dielectric polymer materials are becoming essential for 5 G mobile communication to achieve mass transport information without signal loss. Herein, we present an aliphatic–aromatic copolyimide using Priamine 1075 (aliphatic) and m-tolidine (aromatic) as diamines. The branched bulky aliphatic units enlarge the free volume, effectively reducing the dipole moment density, while the aromatic diamine was introduced to prevent polymer chain relaxation under the operating conditions. We observed that there is an optimal composition that regulates the chain movement and density of dipole moments through the control of the polymer chain rigidity and nanostructure. Thus, by tuning the composition, we succeeded in achieving a low-dielectric copolyimide with a dielectric constant (Dk) of 2.63 and dielectric loss (Df) of 0.0017 at 28 GHz. Combining molecular design and composition control, this study suggests a design factor for advanced copolymers for telecommunication applications with fast signal transport speed and minimum signal loss.
- Files in This Item
-
- Appears in
Collections - 서울 공과대학 > 서울 화학공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/186110)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.