TiO2 나노입자 코팅에 의한 PET섬유의 초발수성에 관한 연구
A Study on the Super-hydrophobicity of Poly(ethylene terephthalate)Fabric by TiO2 Nano-particles Coating
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Abstract― Studies on plants such as lotus leaf suggested that dual-scale structure could contribute to super-hydrophobicity. We introduced super-hydrophobicity onto poly(ethylene terephthalate)(PET) fabric with dual-scale structure by assembling TiO2 nano sol. PET fabric was treated with TiO2 sol, water-repellent agent using various parameters such as particle size, concentration. Morphological changes by particle size were observed using field emmission scanning electron microscopy(FE-SEM) and AFM measurement, contact angle measurement equipment. The contact angle of water was about 138.5°, 125.8°, 125.5° and 108.9° for PET fabric coated with 60.2nm, 120.1nm, 200nm and 410.5nm TiO2 particles, compared with about 111.5° for PET fabric coated with water repellent. When we mixed particle sizes of 60.2nm and 120.1nm by 7:3 volume ratio, the contact angle of water was about 132.5°. And we mixed particle sizes of 60.2nm and 200nm by 7:3 volume ratio, the contact angle of water was about 141.8°. Also we mixed particle sizes of 60.2nm and 410.5nm by 7:3 volume ratio, the best super-hydrophobicity was obtained. In this paper, we fabricated various surface structures to the water-repellent surfaces by using four types of TiO2 nano-particles, and we found that the nanoscale structure was very important for the super-hydrophobicity.
Abstract
Abstract― Studies on plants such as lotus leaf suggested that dual-scale structure could contribute to super-hydrophobicity. We introduced super-hydrophobicity onto poly(ethylene terephthalate)(PET) fabric with dual-scale structure by assembling TiO2 nano sol. PET fabric was treated with TiO2 sol, water-repellent agent using various parameters such as particle size, concentration. Morphological changes by particle size were observed using field emmission scanning electron microscopy(FE-SEM) and AFM measurement, contact angle measurement equipment. The contact angle of water was about 138.5°, 125.8°, 125.5° and 108.9° for PET fabric coated with 60.2nm, 120.1nm, 200nm and 410.5nm TiO2 particles, compared with about 111.5° for PET fabric coated with water repellent. When we mixed particle sizes of 60.2nm and 120.1nm by 7:3 volume ratio, the contact angle of water was about 132.5°. And we mixed particle sizes of 60.2nm and 200nm by 7:3 volume ratio, the contact angle of water was about 141.8°. Also we mixed particle sizes of 60.2nm and 410.5nm by 7:3 volume ratio, the best super-hydrophobicity was obtained. In this paper, we fabricated various surface structures to the water-repellent surfaces by using four types of TiO2 nano-particles, and we found that the nanoscale structure was very important for the super-hydrophobicity.
참고문헌 (11)
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