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창의적인 신지식 창출과 산업계와의 협력적 네트워크 구축

금주의 우수논문

SCI-E Article
Interface mechanics of liquid crystal polymer nanocomposites with high concentrations of MWCNTs
최준명
  1. 성명
    최준명
  2. 소속
    공학대학 기계공학과
  3. 캠퍼스
  4. 우수선정주
    2022년 05월 2째주
Author
Kim, Hongdeok (Dept Mech Engn); 최준명 (Dept Mech Engn) corresponding author; Kim, Hongdeok (Dept Mech Design Engn); Choi, Joonmyung (Dept Mech Design Engn);
Corresponding Author Info
Choi, J(해당 저자), Hanyang Univ, Dept Mech Engn, BK21 FOUR ERICA ACE Ctr, 55 Hanyangdaehak ro, Ansan 15588, South Korea.; Choi, J(해당 저자), Hanyang Univ, Dept Mech Design Engn, 222 Wangsimni Ro, Seoul 04763, South Korea.; Choi, J(해당 저자), Hanyang Univ, Dept Mec
E-mail
이메일joonchoi@hanyang.ac.kr
Document Type
Article
Source
COMPOSITES SCIENCE AND TECHNOLOGY Volume:222 Issue: Pages:- Published:2022
Times Cited
0
External Information
http://dx.doi.org/10.1016/j.compscitech.2022.109376
Abstract
Compositing a liquid crystal polymer (LCP) with highly oriented multi-walled carbon nanotubes (MWCNTs) at non-dilute filler concentrations has attracted considerable attention due to its function as alignment layer as well as mechanical reinforcement. In this study, the structural and mechanical features of the LCP-MWCNT interface were investigated by all-atom molecular dynamics (MD) simulations. The results suggested that the MWCNT filler co-oriented with the liquid crystalline matrix enhances the crystallinity of the LCP molecules, especially in the interfacial area. The aromatic rings of the LCP components exhibited a repeating structural pattern because of the different equilibrium distances depending on the type of pi-pi stacking. The effect of the morphological change of LCPs in the interfacial region on the load transfer capability was also evaluated in terms of filler concentrations. In particular, tight coupling between the liquid crystal components and efficient load transfer to the outermost nanotube shell were first identified. These features account for the enhanced mechanical stiffness in the transverse loading direction with increasing volume fraction of the MWCNTs, as confirmed experimentally.
Web of Science Categories
Materials Science, Composites
Funding
Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of EducationNational Research Foundation of Korea [2019R1F1A1060909]; Creative Materials Discovery Program through the National Research Foundation of Korea
Language
English
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