CHẾ TẠO MÀNG MỎNG CÓ TÍNH KỊ NƯỚC VÀ SIÊU KỊ NƯỚC DỰA TRÊN VẬT LIỆU OCTADECYLAMIN BẰNG CÁC PHƯƠNG PHÁP HÓA - LÝ KHÁC NHAU
Trường Đại học Công nghệ, Đại học Quốc gia Hà Nội
Khoa Vật lý Kỹ thuật và Công nghệ nano, Trường Đại học Công nghệ, Đại học Quốc gia Hà Nội. E4, 144 Xuân Thủy, Cầu Giấy, Hà Nội
Số điện thoại: 0866182682; Email: vtthao@vnu.edu.vn
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Tóm tắt
FABRICATION OF OCTADECYLAMINE THIN FILMS BY DIFFERENT PHYSICAL-CHEMICAL METHODS
Thin films based on octadecylamine (ODA) material have been successfully fabricated by different methods: Langmuir-Blodgett (LB) method, spin-coating, spray-coating and dip-coating methods. The films obtained on the glass substrate were investigated for their optical properties (Uv-vis), film morphology (digital microscope, SEM) and contact angle. The solution and thin film absorption spectra of ODA and the mixtures of ODA and polymer RTV/SR do not absorb in the wavelength of the visible light region. The SEM analysis results show that the film morphology of ODA strongly depends on the nature of the ODA solution and the method of film formation and these are important factors affecting the different hydrophobicity of ODA films. Comparison of the droplet contact angle of thin films obtained by the above methods shows that the films fabricated by LB, spin-coating and spray-coating all increase the hydrophobicity of the glass substrate with the droplet contact angle range from 100o-145o, while dip-coating it is possible to fabricate superhydrophobic films with contact angles up to 161o.
Từ khóa
Octadecylamine, thin film, Langmuir-Blodgett, Langmuir-Schaefer, physical-chemical methods, superhydrophobic, RTV/SR
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Tài liệu tham khảo
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