Rapid, simple, and cost-effective treatments to achieve long-term hydrophilic PDMS surfaces

► We performed an experimental study investigating 39 PDMS surface treatments. ► Wetting of the surfaces was studied during six months. Also morphology was analyzed. ► Seven coatings supported a contact angle of 30° or less for at least six months. ► Only minutes were needed to prepare a long-term hydrophilic coating. ► Only one biocompatible polymer and oxygen plasma were needed for a treatment.