アルミニウム陽極酸化皮膜上へのアルキル基導入効果
1978 年 28 巻 3 号 p. 138-141
詳細
1978 年 28 巻 3 号 p. 138-141
Alkyl groups in such alcohols as hexyl, octyl, nonyl and dodecyl alcohol were introduced on the surface of anodized aluminum film through a chemical treatment, and contact angles and corrosion resistance were measured to examine a hydrophobic effect. An anodized film prepared in sulfuric acid aqueous solution was dipped in a mixed solution of alcohols and carbon tetrachloride containing phosphorus pentoxide as a dehydrater. The treated film has angles considerably extended to various liquids and higher resistance to alkali corrosion than the untreated one. As the value of carbon number in alcohols increases, the contact angle θ is enlarged. IR spectrophotometry on the absorption of CH in 2870 to 2960 cm-1, CH2 and CH3 in 1470 cm-1 shows that the effect depends on the substituents.
