Fig. 2: Mechanical characterizations of hybrid aerogels. | Nature Communications

Fig. 2: Mechanical characterizations of hybrid aerogels.

From: Mechanically resilient hybrid aerogels containing fibers of dual-scale sizes and knotty networks for tissue regeneration

Fig. 2

a Photographs showing the compression and bending resistance capability of cylindrical hybrid aerogels (NF/MF-A1). Scale = 5 mm. b The compression stress-strain curves of NFA, MFA, NF/MF-A1, NF/MF-A2, and NF/MF-A3 at 90% compressive strain. c, d Maximum compressive strength and Young’s modulus at 50, 70, and 90% compressive strains. Data are presented as mean values ± SD, N = 5. The significant difference was detected by two-way ANOVA with Tukey’s multiple comparisons test. The ‘ns’ indicated no significant difference, *p < 0.01, **p < 0.001, ***p ≤ 0.0008, ****p < 0.0001. e–g, Changes in length of NFA, MFA, and NF/MF-A1 as a function of their ultra-resilient properties during cyclic compression-relaxation test at 90% compressive strain. h, i Maximum tearing strength and fracture energies. Data are presented as mean values ± SD, N = 5. The significant difference was detected by one-way ANOVA with Tukey’s multiple comparisons test. The ‘ns’ indicated no significant difference, **p < 0.001, ****p < 0.0001. j Comparison of mechanical properties of hybrid aerogels with other polymeric aerogels reported in the literature known for high mechanical properties. (1) NFA; (2) MFA; (3) NF/MF-A1; (4) NF/MF-A2; (5) NF/MF-A3; (6) composite nanofiber aerogel with porosity of 91% (CNA-91); (7) composite nanofiber aerogel with porosity of 87% (CNA-87); (8) composite nanofiber aerogel with porosity of 83% (CNA-83); (9) composite nanofiber aerogel with porosity of 76% (CNA-76); (10) bacterial cellulose (BC); (11) BC/poly(3,4-theylenedioxythiophene)/single walled carbon nanotube (BC/PEDOT/SWNT); (12) chitin, (13) chitosan, (14) polyimide (PI); (15) PI/carbon nanotube (PI/CNT); and (16) PI/graphene. NFA nanofiber aerogels coated with 1% gelatin. MFA microfiber aerogels coated with 1% gelatin. NF/MF-A1 hybrid aerogels containing NF/MF at a ratio of 50:50 (w/w) coated with 1% gelatin. NF/MF-A2 hybrid aerogels containing NF/MF at a ratio of 75:25 (w/w) coated with 1% gelatin. NF/MF-A3 hybrid aerogels containing NF/MF at a ratio of 25:75 (w/w) coated with 1% gelatin.

Back to article page