BET analysis of electrospun nanofibers before and after cross-linking with different concentrations of BTCA at 160 °C. Statistical significance is defined as *P < 0.05 compared to control sample (ANOVA test).

BTCA conc.	Surface area (m2 g−1)		Pore volume (cm3 g−1)		Pore size (nm)
	Non cross-linked	160 °C	Non cross-linked	160 °C	Non cross-linked	160 °C
0	7.67 ± 0.2	3.08 ± 0.06	0.014 ± 0.001	0.006 ± 0.001	7.25 ± 0.2	8.08 ± 0.4
3	9.55 ± 0.3*	2.69 ± 0.1	0.017 ± 0.001	0.004 ± 0.002	7.21 ± 0.4	6.03 ± 0.8*
5	11.37 ± 0.1*	3.21 ± 0.1	0.019 ± 0.002*	0.005 ± 0.001	6.75 ± 0.2	5.59 ± 0.4
7	13.73 ± 0.4*	3.71 ± 0.06	0.023 ± 0.002*	0.005 ± 0.002	6.71 ± 0.3	5.79 ± 0.2
10	10.06 ± 0.3*	2.68 ± 0.04*	0.018 ± 0.001*	0.004 ± 0.001	7.09 ± 0.2	5.92 ± 0.3