Effect of electron beam and gamma rays on carbon nanotube yarn structure
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Materials Research
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Individual carbon nanotubes (CNTs) exhibit excellent mechanical, electrical and thermal properties,
leading to development of a new generation of advanced lightweight materials and spacecraft electronics
substituting the electronics based on silicon. The direct assembly of CNTs into macroscopic fibers
or sheets has been a way to overcome their dispersion and processing challenges. Because of a wide
range of applications of this material, we investigate effectively the defects on CNT yarns structures
created by electron beam and gamma sources and their impact on the morphology and mechanical
properties. The irradiated samples with electron beam at doses of 400, 600 and 800 kGy had a decrease
in the strength from 219.60 ± 18.90 MPa for pristine yarn to 108.86 ± 23.77, 153.15 ± 21.63, 170.50 ±
25.78 MPa, respectively. The sample irradiated with gamma in air at dose of 100 kGy had the strength
increased slightly as compared with the pristine sample and an increase in the elasticity modulus from
8.79 ± 1.19 to 19.63 ± 2.02 GPa as compared to CNT pristine yarn. The quality of the CNT yarns that
was gamma irradiated in air with absorbed dose of 100 kGy was not affected by the radiation process
with improvement of 123% of the Young’s modulus.
Como referenciar
EVORA, MARIA C.; HIREMATH, NITILAKSHA; LU, XINYI; KANG, NAM-GOO; SILVA, LEONARDO G. de A. e; BHAT, GAJANAN; MAYS, JIMMY. Effect of electron beam and gamma rays on carbon nanotube yarn structure. Materials Research, p. 1-7, 2017. DOI: 10.1590/1980-5373-MR-2017-0102. Disponível em: http://repositorio.ipen.br/handle/123456789/27876. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.