Table 2.

The BET surface area is calculated using the amount of N₂ adsorbed at a relative vapour pressure of 0.06–0.35 at 77 K. V_total is the total pore volume determined at P/P₀ of 0.99; V_meso is the mesopore volume determined at P/P₀ of 0.95; % mesopore volume is the percentage of the total pore volume that is mesoporous; 2r is the average pore diameter of the aerogels determined using the adsorption branch of the isotherm, using the BJH method

Initial chitin nanowhisker mass in gel [mg]	BET surface area [m2 g−1]	Vtotal [cm3 g−1]	Vmeso [cm3 g−1]	% mesopore volume	2r [nm]
40	116	0.34	0.21	62 %	13
50	177	0.49	0.31	63 %	13
60	126	0.33	0.23	70 %	12
70	212	0.64	0.40	63 %	14
70	194	0.66	0.37	56 %	15
80	177	0.69	0.37	54 %	17
80	190	0.64	0.37	58 %	14
90	58	0.19	0.11	58 %	15
100	198	0.60	0.37	62 %	14
100	261	0.75	0.48	64 %	12
120	125	0.47	0.25	53 %	17
120	212	0.68	0.43	63 %	13