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

Table 2

Contact angle and surface energy values for the prepared materials.

Sample	Contact angle (°)			Surface energy (mJ/m^2)
	CA (air side)	63.75 ± 2.14	38.14 ± 4.78	39.27 ± 4.47	42.14	39.97	2.17	0.06	18.48
CA (substrate side)	64.12 ± 2.89	38.38 ± 3.92	43.62 ± 4.48	41.44	37.74	3.69	0.19	17.96
CA + ADD (air side)	42.03 ± 4.47	28.78 ± 3.98	30.75 ± 2.39	50.53	43.91	6.62	0.26	47.81
CA + ADD (substrate side)	39.85 ± 7.04	32.18 ± 2.54	30.83 ± 1.45	54.95	43.88	11.07	0.56	54.30
PVA (air side)	54.79 ± 11.66	30.19 ± 3.49	39.36 ± 4.63	43.13	39.93	3.20	0.09	27.20
PVA (substrate side)	62.81 ± 7.19	29.14 ± 1.84	38.19 ± 3.12	46.10	40.51	5.59	0.51	15.21
PVA + ADD (air side)	75.55 ± 5.58	42.49 ± 5.28	44.15 ± 3.59	41.48	37.46	4.01	0.64	6.58
PVA + ADD (substrate side)	74.49 ± 2.52	40.77 ± 3.32	45.40 ± 4.48	41.54	36.79	4.75	0.82	6.87
BAPM: PVA + ADD (air side)	49.93 ± 5.25	28.91 ± 2.88	38.47 ± 5.10	41.77	40.37	1.40	0.01	34.27
BAPM: PVA + ADD (interface)	40.75 ± 4.27	24.31 ± 5.90	35.54 ± 5.45	43.70	41.78	1.92	0.02	46.69
BAPM: CA + ADD (interface)	49.21 ± 3.37	32.91 ± 2.41	34.79 ± 5.42	45.59	42.13	3.47	0.08	38.39
BAPM: CA + ADD (substrate side)	46.04 ± 3.88	26.98 ± 3.44	38.81 ± 2.47	41.03	40.20	0.82	0.00	39.49