fig9

Figure 9. (A) Three-phase contact angle of polar liquid and a PEG/polar liquid mixture including a fraction of 62% PEG 200 on silver flakes when covered by epoxy resin or epoxy resin with 5 vol% PEG 200, the blue shaded area indicates the estimated contact angle range above which no more capillary suspension is formed ^[25]; (B) interfacial tension between the epoxy resin with varying PEG 200 content between 0 and 5 vol% (main phase) vs. mixtures of polar liquid and PEG 200 (secondary phase), at 84 vol% PEG 200 in the PEG/polar liquid mixture no finite interfacial tension can be measured. The bar height/symbols indicate the average value and the error bars the standard deviation obtained from 5 (contact angle) and 10 (interfacial tension) measurements, respectively. PEG: Polyethylene glycol.