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- W4313267777 abstract "Biomass-based aerogel fibers have attracted increasing attention due to their renewable nature. However, their disadvantages, such as low mechanical strength, poor long-range order, and easy combustion, are still significant challenges. Herein, a directed freezing-assisted forced stretching strategy is developed to fabricate sheath-core structured Ca-alginate/polyvinyl alcohol (Ca-A/PVA) aerogel fibers with Long-range-ordered pores. The Ca-A/PVA aerogel fibers (3:2 m/m) exhibit the best comprehensive mechanical properties in terms of low thermal conductivity of 0.0524 W·m-1·K-1, a density of 0.1614 g·cm-3, a porosity of 89.9 %, a tensile strength of 8.72 MPa, a tensile modulus of 249.7 MPa, a toughness of 1.98 MJ∙m-3, and a self-extinguishing time from the fire of <1.2 s. The Ca-A/PVA fabrics showed a maximum absolute temperature difference of 11.4 °C at -20 °C and 14.0 °C at 60 °C compared to the plate temperature. The presented strategy is generalizable to other alginate-based aerogel fibers (e.g., alginate/guar gum)." @default.
- W4313267777 created "2023-01-06" @default.
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- W4313267777 date "2023-02-01" @default.
- W4313267777 modified "2023-09-30" @default.
- W4313267777 title "Sheath-core structured Ca-alginate/PVA aerogel fibers via directed freezing wet-spinning" @default.
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- W4313267777 doi "https://doi.org/10.1016/j.ijbiomac.2022.12.306" @default.
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