Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 653, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2022.130033
Keywords
Wet spinning; Triangular hollow porous fiber; Light reflection; Thermal insulation performance
Categories
Funding
- Science and Technology Guiding Project of China National Textile and Apparel Council [2020064]
- Foundation Project of Jiangsu Advanced Textile Engi- neering Technology Center [XJFZ/2021/3]
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In this study, triangular hollow porous PAN fibers were prepared using a method inspired by silver ant hair. These fibers showed significantly improved strength, light reflectance, and heat insulation performance compared to regular fibers, providing new possibilities for the design of heat stealth and flash materials.
In this paper, triangular hollow porous polyacrylonitrile (PAN) fibers were prepared by coaxial wet spinning inspired by silver ant hair. These PAN fibers with ideal triangular hollow cross section structure were obtained by adding inorganic salts into the cortex and core spinning solution combined with proper drawing ratio. Its strength increases to 4.3 times compared with that of the nascent fiber without inorganic salt. Subsequently, the light reflection as well as thermal insulation properties of triangular and circular hollow porous fibrous mats were compared and analyzed. The results show that the triangular hollow porous fibers have higher light reflectance and heat insulation performance than the circular fibers, which endows the fabric a shimmering gloss. This research further expands the application of hollow porous fiber in both thermal insulation field and optical field, which is conducive to the design of heat stealth materials and flash materials.
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