Table 1 Summary of all tests

From: Hydrogel mechanical properties in altered gravity

Environment

Test type

Sample

Outcome

Parabolic flight test

1.8g0, µg0, and g0 test

PEGDA (dry)

PEGDA-GO (dry)

Stress–strain curves for the same sample

Standard test (Fig. 1b) without spray

PEGDA-GO (dry)

4 stress–strain curves in 1.8g0 and µg0. 1 stress–strain curve in 1.8g0 and µg0 that includes two gravity transitions.

Standard tests with spray (Fig. 1b)

PEGDA and PEGDA-GO

(dry and swollen)

4 stress–strain curves for dry PEGDA and 4 stress–strain curves for dry PEGDA-GO. 2 stress–strain curves for PEDA and 3 stress–strain curves for PEDA-GO with PBS in 1.8g0 and µg0. 2 stress–strain curves for PEGDA and 2 stress–strain curves for PEGDA-GO with PBS during 1.8g0 and µg0 that includes gravity transitions.

Ground test

Standard tests with spray

PEGDA and PEGDAGO

(dry and swollen)

5 stress–strain curves for dry PEGDA and PEGDA with PBS in g0. 5 stress–strain curves for dry PEGDA-GO and PEGDA-GO with PBS in g0.