Jang, Ji-un Cha, Ji Eun Lee, Seung Hwan Kim, Jaewoo Yang, Beomjoo Kim, Seong Yun Kim, Seong Hun 2024-01-19T18:31:37Z 2024-01-19T18:31:37Z 2021-09-05 2020-01 0032-3861 https://pubs.kist.re.kr/handle/201004/119144 In order to develop a nanocomposite film based on multi-walled carbon nanotubes (MWCNTs) as an electromagnetic wave shielding material, we propose a solvent-free melting process for fabricating highly dispersed MWCNT-filled polymer composite films with high electrical conductivity and electromagnetic interference (EMI)-shielding properties. By observing aggregates (particles larger than 0.7 mu m) using X-ray micro-computed tomography (micro-CT), the uniform dispersion of the MWCNT fillers in the composite films was confirmed. Furthermore, the electrical conductivity and EMI shielding effectiveness (SE) values calculated using percolation and Simon's equations, respectively, were confirmed to agree with experimental data, indicating excellent MWCNT dispersion. The fabricated composites exhibited excellent electrical conductivity, EMI SE, and EMI specific SE (SSE) values of 4.33 S/cm, 30 dB, and of 24.8 dBcm(3)g(-1), respectively, and the EMI SSE value was as good as metal levels. The proposed solvent-free process can be contributed to the commercialization of EMI SE composite films based on MWCNTs. English ELSEVIER SCI LTD Enhanced electrical and electromagnetic interference shielding properties of uniformly dispersed carbon nanotubes filled composite films via solvent-free process using ring-opening polymerization of cyclic butylene terephthalate Article 10.1016/j.polymer.2019.122030 1 POLYMER, v.186 POLYMER 186 N scie scopus 000513004500018 2-s2.0-85076620713 Polymer Science Polymer Science Article IN-SITU POLYMERIZATION CHEMICAL OXIDATIVE POLYMERIZATION THERMAL-CONDUCTIVITY THEORETICAL APPROACH FACILE SYNTHESIS NANOCOMPOSITES GRAPHITE GRAPHENE MATRIX FUNCTIONALIZATION Cyclic butylene terephthalate Composite Carbon nanotube