Binary Silanization and Silver Nanoparticle Encapsulation to Create Superhydrophobic Cotton Fabrics with...

Area of Science:

• Materials Science
• Textile Engineering
• Nanotechnology

Background:

• Cotton fabrics, derived from cellulose, are widely used but lack water resistance and are susceptible to microbial growth.
• Developing functional finishes for natural fibers like cotton is crucial for expanding their applications.

Purpose of the Study:

• To impart superhydrophobic and antimicrobial properties to cotton fabrics.
• To explore the use of fluorine-free organosilanes and silver nanoparticles for cotton functionalization.

Main Methods:

• Rapid functionalization of cotton using a binary hexane solution of methyltrichlorosilane (MTS) and octadecyltrichlorosilane (OTS).
• Encapsulation of the functionalized fabric with colloidal silver nanoparticles (AgNP).

Main Results:

• Achieved a remarkable water contact angle of 153° ± 2°, indicating superhydrophobicity.
• Demonstrated effective antimicrobial properties against gram-negative Escherichia coli.
• The combined silanization and AgNP coating resulted in enhanced fabric performance.

Conclusions:

• Fluorine-free organosilanes and silver nanoparticles offer a viable route to create high-performance, functionalized cotton fabrics.
• Modified cotton exhibits superior waterproof and contamination-resistant characteristics.
• This approach enhances the functionality of abundant biopolymers for advanced applications.