Kim, Young-Gon Kim, Hyun Su Jo, Seong Mu Kim, Seong Yun Yang, B. J. Cho, Jaehyun Lee, Sungho Cha, Ji Eun 2024-01-19T21:31:27Z 2024-01-19T21:31:27Z 2021-09-04 2018-11-01 1385-8947 https://pubs.kist.re.kr/handle/201004/120711 The thermally insulating, fire-retardant, smokeless and flexible polymer nanofiber is an incredibly important material for mankind. This polymer nanofiber is expected to breed technological innovations in applications such as thermally insulated clothing and building materials. Here, we propose an electrospinning process to fabricate silica aerogel-filled polymer nanofibers by modifying the typical sol-gel chemistry process for the synthesis of silica aerogel. Silica aerogel-filled polyvinylidene fluoride (PVdF) nanofiber webs, fabricated using the proposed process, were fire-retardant, smokeless and flexible; they also exhibited a low thermal conductivity of 0.028 Wm(-1).K-1, which was 26.3% lower than that of pure PVdF nanofiber webs. To study the unique thermal characteristics of nanofibers theoretically, a micromechanics-based, two-scale multiphase model was proposed, with consideration of fiber structure including nano and micro pores. These developments make an important contribution to bringing silica aerogel products to everyday life. English ELSEVIER SCIENCE SA COMPOSITES CONDUCTIVITY CELLULOSE MEMBRANE NITRIDE FILMS GEL Thermally insulating, fire-retardant, smokeless and flexible polyvinylidene fluoride nanofibers filled with silica aerogels Article 10.1016/j.cej.2018.06.102 1 CHEMICAL ENGINEERING JOURNAL, v.351, pp.473 - 481 CHEMICAL ENGINEERING JOURNAL 351 473 481 scie scopus 000444000000049 2-s2.0-85048782353 Engineering, Environmental Engineering, Chemical Engineering Article COMPOSITES CONDUCTIVITY CELLULOSE MEMBRANE NITRIDE FILMS GEL Aerogel Fiber Composite Thermal conductivity