The experimental work to validate the model was presented in a previous
study.40 (link) Herein, we summarize the procedure, and readers are encouraged
to see the previous study for detailed information.
PA6 was dissolved in formic acid, and then CNC was added to the suspension based on
the target concentration. The prepared suspension was kept under agitation for
approximately an hour. The prepared suspension was sonicated for 45 min before the
spinning process. 2 mL of the suspension was cast on a rectangular glass substrate,
and the glass substrate was spun at 2000 r/min for 15 s and at 3000 r/min for
30 s.
CNC-PA6 nanocomposite samples were tested using TA Instrument ElectroForce 3200 with
10 N load cells. The elastic modulus of samples was calculated from the linear
region of the stress-strain curve and reported for comparison of the model
predictions and experimental results.