Photos of the open siphon experiment using a 0.5 wt% 8 million g/mol PEO solution laden with 2 wt% 45 60 nm silica particles


 

(a) (b)

(c) (d)

Photos of the open siphon experiment using a 0.5 wt% 8 million g/mol PEO solution laden with 2 wt% 45 60 nm silica particles. The suspension is almost cleaned up by the siphon. Elapsed time: (a) 1.5 s; (b) 3.0 s; (c) 6.0 s; (d) 14.5 s.