Title of article :
Superhydrophobic cotton fabric coating based on a complex
layer of silica nanoparticles and perfluorooctylated
quaternary ammonium silane coupling agent
Author/Authors :
Minghua Yu، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Abstract :
A superhydrophobic complex coating for cotton fabrics based on silica nanoparticles and perfluorooctylated quaternary ammonium silane
coupling agent (PFSC) was reported in this article. The complex thin film was prepared through a sol–gel process using cotton fabrics as a substrate.
Silica nanoparticles in the coating made the textile surface much rougher, and perfluorooctylated quaternary ammonium silane coupling agent on
the top layer of the surface lowered the surface free energy. Textiles coated with this coating showed excellent water repellent property, and water
contact angle (CA) increased from 1338 on cotton fabrics treated with pure PFSC without silica sol pretreatment up to 1458. The oil repellency was
also improved and the contact angle of CH2I2 droplet on the fabric surface reached to 1318. In contrast, the contact angle of CH2I2 on the fabric
surface treated with pure PFSC was only 1258.
Keywords :
Sol–gel , Perfluoroalkylated compound , Superhydrophobicity , Cotton fabrics
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science