화학공학소재연구정보센터
Journal of Colloid and Interface Science, Vol.532, 153-160, 2018
Two-phase displacement dynamics in capillaries-nanofluid reduces the frictional coefficient
Surfactant solutions containing polymeric nanoparticles have been shown to have an improved wetting and spreading on solid surfaces. In this work, we explored the effect of the polymeric nanoparticles on the frictional coefficient at the three-phase contact region by studying polymeric nanofluids displacing oil in capillaries. Our results show polymeric nanoparticles can reduce the frictional coefficient by as much as four times by forming structured layers in the confined wedge film. We also demonstrate the role of the interfacial tension in affecting the frictional coefficient. (C) 2018 Elsevier Inc. All rights reserved.