The materials that are in contact with food are supposed to be classified as not only environmentally friendly but also potentially non-toxic to humans. Nowadays, some researchers suggest that organic and bio-based waxes could be good choices for lowering the surface energy and thus fabricating super-liquid-repellent surfaces. What else besides waxes do you recommend to be used for fabricating superhydrophobic and/or superomniphobic surfaces?
Abouzar Ghasemi Polyolefin heat-shrinkable film with 10 nm Teflon layer.
Wood, B. Hawkett, C. Neto. ACS Appl. Mater. Interfaces, DOI: 10.1021/acsami.5b12165
I would go towards silicones instead of waxes if you're looking for repellency beyond water. We just published work on how to repel oils using silicone brush chemistries: https://www.nature.com/articles/s41893-020-0591-9
You of course still need re-entrant structure and sufficient capillary resistance to support the composite interface, but a non-zero oil intrinsic contact angle is your first step.
Super repellent surfaces could be created either by modifying the surface chemistry or surface roughness. There are hydrophobic biocompatible materials like PDMS, Parylene-C. You could make them superhydrophobic by increasing their surface roughness.
Yuri Mirgorod Neha Suvindran Kevin Golovin Thank you so much for your responce
- Badges
- Science topic
- Similar topics
- Engineering
- Chemical Engineering