| abstract |
Super-hydrophobic particles of less than 1000 µm comprising at least an outer layer at least 90% by weight of Polypropylene, wherein said outer layer, has : n- a root mean square surface roughness comprised between 0.1 µm and 50µm, advantageously between 1.1µm and 20µm, preferably between 5µm and 16µm, and /or n- a Wenzel roughness factor above 1.2, advantageously above 1.3, such as comprised between 1.4 and 3, or more. |