Table 7.

Surface free energy (mN/m) of PLA/PEG-based samples containing chitosan and powdered rosemary ethanolic extract and work of spreading (W_s) for red blood cells (rbc) and platelets (p).

Sample Code	${\mathit{\gamma }}_{\mathit{s}\mathit{v}}^{\mathit{L}\mathit{W}}$	${\mathit{\gamma }}_{\mathit{s}\mathit{v}}^{\mathit{A}\mathit{B}}$	${\mathit{\gamma }}_{\mathit{s}\mathit{v}}^{+}$	${\mathit{\gamma }}_{\mathit{s}\mathit{v}}^{-}$	${\mathit{\gamma }}_{\mathit{s}\mathit{v}}^{\mathit{T}\mathit{O}\mathit{T}}$	Ws/rbc	Ws/p
PLA/PEG	39.17	1.92	0.03	34.91	41.09	4.54	−69.58
PLA/PEG/3CS	41.94	6.98	0.25	49.47	48.92	14.42	−49.46
PLA/PEG/6CS	42.76	20.34	1.54	67.30	63.10	22.22	−43.83
PLA/PEG/0.5R	33.64	13.95	1.27	38.25	47.59	12.27	−71.51
PLA/PEG/3CS/0.5R	31.61	3.90	0.08	45.87	35.51	−1.14	−75.52
PLA/PEG/6CS/0.5R	30.07	7.72	0.30	49.53	37.78	0.81	−75.01

${\gamma }_{sv}^{TOT}$—total surface tension; ${\gamma }_{sv}^{LW}$—apolar Lifshitz-van der Waals component; ${\gamma }_{sv}^{AB}$—polar Lewis acid-base interaction; ${\gamma }_{sv}^{+}$—electron acceptor (Lewis acid) component; ${\gamma }_{sv}^{-}$—electron donor (Lewis base) component; W_s/rbc and W_s/p—work of spreading for red blood cells and platelets, respectively.