Effects of SiO₂ Nanoparticles on Polyvinyl Alcohol/Carboxymethyl Cellulose Polymer Blend Films’ Structural, Wettability, Surface Roughness, and Optical Characteristics

Table 3

Optical parameters for PVA/CMC/SiO₂ films.

Film ID	Egd (eV)	Egi (eV)	EU (eV)	n (λ = 600 nm)
PCS0	5.52	4.79	0.84	2.009
PCS1	5.36	4.51	0.83	2.074
PCS2	5.42	4.57	0.86	2.047
PCS3	5.28	4.38	0.87	2.106
PCS4	5.17	4.32	0.91	2.144