Durable, superoleophobic polymer-nanoparticle composite surfaces with re-entrant geometry via solvent-induced phase...

Area of Science:

• Materials Science
• Surface Chemistry
• Polymer Science

Background:

• Superoleophobic plastic surfaces offer benefits like anti-fouling and self-cleaning.
• Current superoleophobic surfaces often lack mechanical durability due to fragile structures or poor adhesion.

Purpose of the Study:

• To develop a facile method for creating durable superoleophobic plastic surfaces.
• To investigate nanoparticle entrapment for generating re-entrant geometries in polycarbonate.

Main Methods:

• Incorporating nanoparticles into polycarbonate surfaces during solvent-induced swelling and crystallization.
• Utilizing nanoparticle agglomerates as nucleation sites for polymer crystallization.
• Functionalizing the resulting surfaces with fluorosilane for enhanced repellency.

Main Results:

• Successfully created re-entrant surface geometries conducive to superoleophobicity.
• Demonstrated that nanoparticle agglomerates act as nucleation points for polymer crystallization.
• Achieved a durable, super-repellent surface through nanoparticle impregnation and fluorosilane functionalization.

Conclusions:

• A facile method for fabricating durable superoleophobic plastic surfaces via nanoparticle entrapment has been established.
• The developed surfaces exhibit desirable re-entrant structures for enhanced liquid repellency.
• This technique holds potential for improving various properties of plastic devices, including anti-bacterial and mechanical performance.