Hydrophobicity of Amino Silicone Oil
As with all the other chemicals, the excellent flexibility of amino silicone oil also derives from its molecular spatial structure: a flexible spiral straight chain structure with alternating silicon and oxygen atoms. Each silicon atom of methylsiloxane contains two methyl groups, which are located on the plane perpendicular to the connecting line between two adjacent oxygen atoms. Each methyl group can rotate and vibrate around the Si-O chain axis. During this dynamic process, the three hydrogen atoms on each methyl group can form something blocking like an umbrella that extends outward. As the rotation of methyl groups takes up a significant amount of space, the oxygen atoms are easily obscured by the methyl groups and can not stay close with the hydrogen atoms on the water molecules, thus leading to the hydrophobicity of amino silicone oil.
