%0 Journal Article
%T Development of superamphiphobic alumina nanofiber mats using trimethoxysilane with a short perfluoroalkyl chain
%A Akiyoshi Ohgoshi
%A Koji Nakane
%A Masaaki Ozawa
%A Shuya Gao
%A Tadayuki Isaji
%J Textile Research Journal
%@ 1746-7748
%D 2018
%R 10.1177/0040517517712093
%X To avoid the generation of hazardous, long-chain perfluoroalkyl carboxylic acids (CnF2n+1COOH, n£¿¡Ý£¿7), we develop relatively safer superamphiphobic alumina nanofiber mats. Our fabrication process focuses on two principles: lowering the surface energy using trimethoxy(1H, 1H, 2H, 2H-nonafluorohexyl)silane (C4F9CH2CH2Si(OCH3)3), which has short-chain perfluoroalkyls that are relatively safer than long-chain ones; and creating a high-roughness surface from electrospun alumina nanofibers with an average fiber diameter of 155£¿nm and inter-fiber spacing of 451£¿nm. Such mats exhibit super-repellency for water (contact angle ¦È * £¿=£¿157¡ã, contact angle hysteresis ¦¤ ¦È * = 2 ¡ã , advancing angle ¦È adv * = 158¡ã, receding angle ¦È rec * = 156¡ã), and n-hexadecane ( ¦È * £¿=£¿151¡ã, ¦¤ ¦È * = 9¡ã, ¦È adv * = 152¡ã, ¦È rec * = 143¡ã). Furthermore, superamphiphobicity is maintained up to 350¡æ
%K superamphiphobicity
%K alumina nanofibers
%K safety
%K perfluoroalkylsilane
%K short fluoroalkyl chain
%U https://journals.sagepub.com/doi/full/10.1177/0040517517712093