We measured the work of separation of single and few-layer MoS2 membranes
from a SiOx substrate using a mechanical blister test, and found a value of 220
+- 35 mJ/m^2. Our measurements were also used to determine the 2D Young's
modulus of a single MoS2 layer to be 160 +- 40 N/m. We then studied the
delamination mechanics of pressurized MoS2 bubles, demonstrating both stable
and unstable transitions between the bubbles' laminated and delaminated states
as the bubbles were inflated. When they were deflated, we observed edge pinning
and a snap-in transition which are not accounted for by the previously reported
models. We attribute this result to adhesion hysteresis and use our results to
estimate the work of adhesion of our membranes to be 42 +- 20 mJ/m^2
