| Summary: | 碩士 === 國立成功大學 === 化學工程學系 === 105 === In addition to the commonly achievable superhydrophobicity, oleophobicity and other functionalities such as stain/chemical resistances and self-healing ability are desirable for the modern fabrics. Amphiphobic, chemically stable, and self-healing polyester fabrics were fabricated by using polymer coatings in this work. Hydrophobically-modified (HM) poly(vinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) was prepared through a two-step reactions in acetone using 3-aminopropyltrimethoxysilane (H2N-(CH2)3-Si-(OCH3)3) and 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (F3C-(CF2)7-(CH2)2-Si-(OC2H5)3) in the first and second reaction steps, respectively. This coating solution was then applied onto the twill weave polyester fabric, which was pretreated with alkaline hydrolysis, using a dip-coating method. The as-fabricated surfaces exhibited extreme liquid repellency as signified by high static contact angles (≧110.9∘) against six pure liquids (water, ethylene glycol, hexadecane, pentadecane, nonane, octane) with surface tension values ranging from 72.8 to 21.4 mN/m. Furthermore, this coating showed chemical stability to strong acid (96% sulfuric acid) and strong base (38% NaOH). The coating also exhibited self-healing property as revealed by the static contact angle change with the plasma-and-heat treatment cycles. This simple and effective polymer coating may find its application in protective clothing among others.
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