Table 1.

Estimated interfacial rheological properties of the encapsulation of Sonzaoid and PLA microbubble for different interfacial models

Interfacial Model	Sonazoid®	PLA Microbubbles
Newtonian Model (NM)	γ = 0.60 ± 0.14 N/m κs = 1.0 ± 0.004 × 10−8 N · s/m	γ = 0.06 ± 0.03 N/m κs = 6.0 ± 3.5 × 10−9 N · s/m
Constant Elasticity Model (CEM)	γ0 = 0.02 N/m Es = 0.51 ± 0.11 N/m κs = 1.0 ± 0.004 × 10−8 N · s/m	γ0 = 0.01 ± 0.006 N/m Es = 0.05 ± 0.03 N/m κs = 6.0 ± 3.5 × 10−9 N · s/m
Exponential Elasticity Model (EEM)	γ0 = 0.02 N/m Es = 0.55 ± 0.10 N/m κs = 1.2 ± 0.40 × 10−8 N · s/m α = 1.5	γ0 = 0.01 ± 0.006 N/m $E_0^s=0.05\pm 0.03\mathrm{N}/\mathrm{m}$ κs = 6.0 ± 3.5 × 10−9 N · s/m α = 1.5
Marmottant Model (MM)	γ0 = 0.0 N/m (i.e. Rbuckling = R0) χ = 0.53 ± 0.10 N/m κs = 1.2 ± 0.40 × 10−8 N · s/m Rbreak-up = 1.5Rbuckling	γ0 = 0.0 N/m (i.e. Rbuckling = R0) χ = 0.06 ± 0.02 N/m κs = 6.0 ± 3.5 × 10−8 N · s/m Rbreak-up = 1.5Rbuckling