Preparation and Characterization of a Bioartificial Polymeric Material: Bilayer of Cellulose Acetate-PVA

Table 3

Permeability coefficient in Barrer for the studied material.

Film	Air	Nitrogen (N2)	Oxygen (O2)	Carbon dioxide (CO2)
CA	0.1142	0.3201	0.5321	0.5910
CA + ADD	0.2205	0.5360	0.5619	0.5946
PVA	0.0067	0.0073	0.0106	0.0852
PVA + ADD	0.0033	0.0040	0.0090	0.0528
Bilayer (CA + ADD down)	0.4061	0.4445	0.7709	4.0960
Bilayer (PVA + ADD down)	0.3947	0.4070	0.7196	2.3140

In contact with the lower chamber or chamber with the lower pressure.