Table 9. Apparent and theoretical density and percentage of porosity data of hydrogels, hydrogel/CFs and hydrogel/PCCs.

Sample	Apparent density (kg m−3)	Theoretical density (kg m−3)	Porosity (%)
Cell-5	103.40 ± 0.08	2030.83	94.90
Cell-4	167.06 ± 0.04	2030.83	91.77
Cell-5/CF	298.82 ± 0.09	2028.60	85.26
Cell-4/CF	510.87 ± 0.10	2028.93	74.82
Cell-5/CF/PEG	943.75 ± 0.09	1329.36	29.00
Cell-4/CF/PEG	1016.85 ± 0.09	1413.80	28.07