Kim, Soyoung Kim, Sunhwa Kim, Young Ho Ku, Bon-Cheol Jeong, Youngjin 2024-01-20T07:04:32Z 2024-01-20T07:04:32Z 2021-09-04 2015-04-30 1229-9197 https://pubs.kist.re.kr/handle/201004/125531 The present study aimed to enhance the electrical conductivity of carbon nanotube (CNT) fibers by introducing copper sulfide (CuS) into them. CuS forms a very stable compound with an electrical conductivity as high as 106 S/m, and it was introduced into CNT fibers by treating them with polyethyleneimine (PEI) to introduce amine groups on the CNTs. The CNT fibers were then treated with a solution of copper sulfate/sodium thiosulfate, which increased their electrical conductivity by >= 100 % (4x10(5) S/m) relative to that of untreated CNT fibers. This study also examined how the CuS plating changed the structure, morphology, and mechanical properties of CNT fibers. The results indicate that the modulus of elasticity of CuS-plated CNTs increased by 2.86 times (11.34 N/tex) and the elongation-at-break decreased by half. English KOREAN FIBER SOC SURFACTANT DISPERSIONS FILMS ACID Enhancement of Electrical Conductivity of Carbon Nanotube Fibers by Copper Sulfide Plating Article 10.1007/s12221-015-0769-3 1 FIBERS AND POLYMERS, v.16, no.4, pp.769 - 773 FIBERS AND POLYMERS 16 4 769 773 scie scopus kci 000353867300008 2-s2.0-84931273288 Materials Science, Textiles Polymer Science Materials Science Polymer Science Article SURFACTANT DISPERSIONS FILMS ACID Carbon nanotube fiber Electrical conductivity Copper sulfide Direct spinning Mechanical property