Table 1.

XRD data of Na⁺MMT and chitosan/PVA–Na⁺MMT nanocomposite films

Specimen IDs	2θ (°)	d-spacing (Å)
Na+MMT	7.25	12.1
1 wt% clay	7.05	12.5
2 wt% clay	6.95	12.7
3 wt% clay	6.78	12.9
4 wt% clay	6.42	13.8
5 wt% clay	6.12	14.4