Fig. 4: Morphology and physical performance of CPI fibers/fabrics. | Nature Communications

Fig. 4: Morphology and physical performance of CPI fibers/fabrics.

From: Fast and scalable production of crosslinked polyimide aerogel fibers for ultrathin thermoregulating clothes

Fig. 4: Morphology and physical performance of CPI fibers/fabrics.

a SEM images of CPI aerogel fibers fabricated from PPI with different grafting ratios. b A single CPI-100 aerogel fiber can load a weight of 100 grams. c Tensile stress-strain curves of CPI-25 (blue), CPI-50 (green) and CPI-100 (red) aerogel fibers. d Optical and infrared thermal images of CPI-100 aerogel fabric (thickness = 0.7 mm), down (thickness = 5.4 mm), cotton (thickness = 6.5 mm) and PI (thickness = 6.9 mm) placed on a hot stage of 200 °C. e Thermal conductivity of the CPI aerogel fabric, down, commercial PI and cotton at −50~200 °C. Bars represent the mean, and error bars represent the standard deviation. Colors in the graphs are: red (CPI), purple (Down), blue (Cotton) and green (Commercial PI). f Summary of temperature difference/thickness (|ΔT | /T) values for commercial materials and reported aerogel fibers. |ΔT| means temperature difference between upper surface temperature of materials and hot stage. Colors in the graphs are: gray (PI), yellow (cotton), blue (Cotton), green (Down), purple (PI/MXene AGF), navy (Silica/Bacterial Cellulose AGF, Silica/BC AGF), brown (Aramid AGF), pink (PI AGF) and red (This work, CPI aerogel fabric).

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