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High-Strength Epoxy Nanocomposites Reinforced with Photochemically Treated CNTs.

ABSTRACT: A carbon nanotube (CNT)/epoxy nanocomposite was prepared using a photochemical surface modification process of CNTs. The vacuum ultraviolet (VUV)-excimer lamp treatment created reactive sites on the CNT surface. Increasing the irradiation time increased the oxygen functional groups and changed the oxygen bonding state such as C=O, C-O, and -COOH. By the VUV-excimer irradiation on CNTs, the epoxy infiltrated well between the CNT bundles and formed a strong chemical bond between CNT and epoxy. The tensile strength and elastic modulus of the nanocomposites with VUV-excimer irradiated sample during 30 min (R30) were found to increase by 30 and 68% compared to using pristine CNT, respectively. R30 was not pulled out and remained embedded in the matrix until the fracture occurred. The VUV-excimer irradiation is an effective surface modification and functionalization method for improving the mechanical properties of CNT nanocomposite materials.

SUBMITTER: Lee JW

PROVIDER: S-EPMC10249089 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature

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High-Strength Epoxy Nanocomposites Reinforced with Photochemically Treated CNTs.

Lee Jae Won JW Kim Sung-Soo SS Lee Min Wook MW Hwang Jun Yeon JY Moon Sook Young SY

ACS omega 20230523 22

A carbon nanotube (CNT)/epoxy nanocomposite was prepared using a photochemical surface modification process of CNTs. The vacuum ultraviolet (VUV)-excimer lamp treatment created reactive sites on the CNT surface. Increasing the irradiation time increased the oxygen functional groups and changed the oxygen bonding state such as C=O, C-O, and -COOH. By the VUV-excimer irradiation on CNTs, the epoxy infiltrated well between the CNT bundles and formed a strong chemical bond between CNT and epoxy. The ...[more]

PMID: 37305311

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