Figure 4.

Observation of fatty acid dimer‐based TPU pieces incubated 2 months at 30°C (A) magnification of 45, (B) magnification of 500 and (C) magnification of 2000.

Observation of fatty acid dimer‐based TPU pieces incubated 2 months at 30°C (A) magnification of 45, (B) magnification of 500 and (C) magnification of 2000.